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nanoFIP - Gateware
Commit c0ef0386 authored by egousiou's avatar egousiou
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wf_rx: renamed to wf_rx_deserializer.vhd 

wf_tx: renamed to wf_tx_serializer
wf_deglitcher: renamed to wf_rx_deglitcher
wf_cons_bytes_from_rx: renamed to wf_cons_bytes_processor
wf_slone_bytes_to_DATO renamed to: wf_bytes_to_dato
wf_prod_bytes_to_tx renamed to: wf_prod_bytes_retriever
wf_slone_prod_DATI_bytes_sampler renamed to wf_prod_bytes_to_dati
new nanoFIP outputs added: u_cacer, u_pacer, r_tler, r_fcser; fx_rxd, fx_rxa, fx_txd renamed to fd_rxd, fd_rxcdn, fd_txd; pdc file updated as well.
no broadcast vars in slone mode finally!
broadcast var 91h instead of 04h.
wf_crc: timing for checking the crc bytes changed (before there was no check with respect to the FES)
wf_engine_control: removed the check of # bytes in slone mode; if > 2 data bytes arrive, nanoFIP puts to DATO the first 2.
new units wf_production and wf_consumption created to clearify the structure!


git-svn-id: http://svn.ohwr.org/cern-fip/trunk/hdl/design@103 7f0067c9-7624-46c7-bd39-3fb5400c0213
parent 24c51736
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DualClkRAM.vhd
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NanoFip.pdc
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...@@ -333,19 +333,19 @@ set_io fd_wdgn_i \ ...@@ -333,19 +333,19 @@ set_io fd_wdgn_i \
-DIRECTION Input -DIRECTION Input
set_io fx_rxa_i \ set_io fd_rxcdn_i \
-pinname 121 \ -pinname 121 \
-fixed yes \ -fixed yes \
-DIRECTION Input -DIRECTION Input
set_io fx_rxd_i \ set_io fd_rxd_i \
-pinname 127 \ -pinname 127 \
-fixed yes \ -fixed yes \
-DIRECTION Input -DIRECTION Input
set_io fx_txd_o \ set_io fd_txd_o \
-pinname 131 \ -pinname 131 \
-fixed yes \ -fixed yes \
-DIRECTION Output -DIRECTION Output
...@@ -554,8 +554,25 @@ set_io we_i \ ...@@ -554,8 +554,25 @@ set_io we_i \
-fixed yes \ -fixed yes \
-DIRECTION Input -DIRECTION Input
set_io u_cacer_o \
-pinname 78 \
-fixed yes \
-DIRECTION Output
set_io u_pacer_o \
-pinname 79 \
-fixed yes \
-DIRECTION Output
set_io r_tler_o \
-pinname 80 \
-fixed yes \
-DIRECTION Output
set_io r_fcser_o \
-pinname 85 \
-fixed yes \
-DIRECTION Output
# #
# Non IO constraints # Non IO constraints
# #
......
nanofip.vhd
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wf_DualClkRAM_clka_rd_clkb_wr.vhd
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--________________________________________________________________________________________________| --_________________________________________________________________________________________________
-- | -- |
-- |The nanoFIP| | -- |The nanoFIP| |
-- | -- |
...@@ -19,7 +19,7 @@ use IEEE.NUMERIC_STD.all; --! conversion functions ...@@ -19,7 +19,7 @@ use IEEE.NUMERIC_STD.all; --! conversion functions
--------------------------------------------------------------------------------------------------- ---------------------------------------------------------------------------------------------------
-- -- -- --
-- WF_DualClkRAM_clka_rd_clkb_wr -- -- WF_DualClkRAM_clka_rd_clkb_wr --
-- -- -- --
--------------------------------------------------------------------------------------------------- ---------------------------------------------------------------------------------------------------
-- --
...@@ -30,16 +30,17 @@ use IEEE.NUMERIC_STD.all; --! conversion functions ...@@ -30,16 +30,17 @@ use IEEE.NUMERIC_STD.all; --! conversion functions
--! The component DualClkRam (512 bytes) is triplicated; each incoming byte is written --! The component DualClkRam (512 bytes) is triplicated; each incoming byte is written
--! at the same position in the three memories, whereas each outgoing byte is the --! at the same position in the three memories, whereas each outgoing byte is the
--! outcome of a majority voter. --! outcome of a majority voter.
--! The memory is dual port; port A is used for reading only, port B for writing only.
-- --
-- --
--! @author Pablo Alvarez Sanchez (Pablo.Alvarez.Sanchez@cern.ch) --! @author Pablo Alvarez Sanchez (Pablo.Alvarez.Sanchez@cern.ch) \n
--! Evangelia Gousiou (Evangelia.Gousiou@cern.ch) --! Evangelia Gousiou (Evangelia.Gousiou@cern.ch) \n
-- --
-- --
--! @date 08/2010 --! @date 10/12/2010
-- --
-- --
--! @version v0.1 --! @version v0.02
-- --
-- --
--! @details\n --! @details\n
...@@ -54,7 +55,7 @@ use IEEE.NUMERIC_STD.all; --! conversion functions ...@@ -54,7 +55,7 @@ use IEEE.NUMERIC_STD.all; --! conversion functions
--------------------------------------------------------------------------------------------------- ---------------------------------------------------------------------------------------------------
-- --
--! \n\n<b>Last changes: </b>\n --! \n\n<b>Last changes: </b>\n
--! -> code cleaned-up and commented --! -> 12/2010 v0.02 EG code cleaned-up+commented \n
-- --
--------------------------------------------------------------------------------------------------- ---------------------------------------------------------------------------------------------------
-- --
...@@ -62,6 +63,12 @@ use IEEE.NUMERIC_STD.all; --! conversion functions ...@@ -62,6 +63,12 @@ use IEEE.NUMERIC_STD.all; --! conversion functions
-- --
--------------------------------------------------------------------------------------------------- ---------------------------------------------------------------------------------------------------
---/!\----------------------------/!\----------------------------/!\-------------------------/!\---
-- Sunplify Premier D-2009.12 Warnings --
-- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
-- No Warnings --
---------------------------------------------------------------------------------------------------
--================================================================================================= --=================================================================================================
--! Entity declaration for WF_DualClkRAM_clka_rd_clkb_wr --! Entity declaration for WF_DualClkRAM_clka_rd_clkb_wr
...@@ -69,19 +76,19 @@ use IEEE.NUMERIC_STD.all; --! conversion functions ...@@ -69,19 +76,19 @@ use IEEE.NUMERIC_STD.all; --! conversion functions
entity WF_DualClkRAM_clka_rd_clkb_wr is entity WF_DualClkRAM_clka_rd_clkb_wr is
generic (C_RAM_DATA_LGTH : integer; -- length of data word generic (C_RAM_DATA_LGTH : integer; -- length of data word
C_RAM_ADDR_LGTH : integer); -- memory depth c_RAM_ADDR_LGTH : integer); -- memory depth
port ( port (
clk_A_i : in std_logic; clk_porta_i : in std_logic;
addr_A_i : in std_logic_vector (C_RAM_ADDR_LGTH - 1 downto 0); addr_porta_i : in std_logic_vector (C_RAM_ADDR_LGTH - 1 downto 0);
clk_B_i : in std_logic; clk_portb_i : in std_logic;
addr_B_i : in std_logic_vector (C_RAM_ADDR_LGTH - 1 downto 0); addr_portb_i : in std_logic_vector (C_RAM_ADDR_LGTH - 1 downto 0);
data_B_i : in std_logic_vector (C_RAM_DATA_LGTH - 1 downto 0); data_portb_i : in std_logic_vector (C_RAM_DATA_LGTH - 1 downto 0);
write_en_B_i : in std_logic; write_en_portb_i : in std_logic;
data_A_o : out std_logic_vector (C_RAM_DATA_LGTH -1 downto 0) data_porta_o : out std_logic_vector (C_RAM_DATA_LGTH -1 downto 0)
); );
end WF_DualClkRAM_clka_rd_clkb_wr; end WF_DualClkRAM_clka_rd_clkb_wr;
...@@ -95,28 +102,28 @@ architecture syn of WF_DualClkRAM_clka_rd_clkb_wr is ...@@ -95,28 +102,28 @@ architecture syn of WF_DualClkRAM_clka_rd_clkb_wr is
--!@brief: component DualClkRam declaration --!@brief: component DualClkRam declaration
component DualClkRam is component DualClkRam is
port( port(
DINA : in std_logic_vector (7 downto 0); DINA : in std_logic_vector (7 downto 0);
ADDRA : in std_logic_vector (8 downto 0); ADDRA : in std_logic_vector (8 downto 0);
RWA : in std_logic; RWA : in std_logic;
CLKA : in std_logic; CLKA : in std_logic;
DINB : in std_logic_vector (7 downto 0); DINB : in std_logic_vector (7 downto 0);
ADDRB : in std_logic_vector (8 downto 0); ADDRB : in std_logic_vector (8 downto 0);
RWB : in std_logic; RWB : in std_logic;
CLKB : in std_logic; CLKB : in std_logic;
RESETn : in std_logic; RESETn : in std_logic;
DOUTA : out std_logic_vector (7 downto 0); DOUTA : out std_logic_vector (7 downto 0);
DOUTB : out std_logic_vector (7 downto 0) DOUTB : out std_logic_vector (7 downto 0)
); );
end component DualClkRam; end component DualClkRam;
--------------------------------------------------------------------------------------------------- ---------------------------------------------------------------------------------------------------
type t_data_o_A_array is array (natural range <>) of std_logic_vector (7 downto 0); type t_data_o_A_array is array (natural range <>) of std_logic_vector (7 downto 0);
signal data_o_A_array : t_data_o_A_array (0 to 2); -- keeps the DOUTA of each one of the memories signal data_o_A_array : t_data_o_A_array (0 to 2); -- keeps the DOUTA of each one of the memories
signal zero, one, s_rwB : std_logic; signal zero, one, s_rwB : std_logic;
signal s_zeros : std_logic_vector (7 downto 0); signal s_zeros : std_logic_vector (7 downto 0);
--================================================================================================= --=================================================================================================
...@@ -127,7 +134,7 @@ begin ...@@ -127,7 +134,7 @@ begin
zero <= '0'; zero <= '0';
one <= '1'; one <= '1';
s_zeros <= (others => '0'); s_zeros <= (others => '0');
s_rwB <= not write_en_B_i; s_rwB <= not write_en_portb_i;
--------------------------------------------------------------------------------------------------- ---------------------------------------------------------------------------------------------------
--!@brief: memory triplication --!@brief: memory triplication
...@@ -140,14 +147,14 @@ G_memory_triplication: for I in 0 to 2 generate ...@@ -140,14 +147,14 @@ G_memory_triplication: for I in 0 to 2 generate
UDualClkRam : DualClkRam UDualClkRam : DualClkRam
port map ( DINA => s_zeros, port map ( DINA => s_zeros,
ADDRA => addr_A_i, ADDRA => addr_porta_i,
RWA => one, RWA => one,
CLKA => clk_A_i, CLKA => clk_porta_i,
DINB => data_B_i, DINB => data_portb_i,
ADDRB => addr_B_i, ADDRB => addr_portb_i,
RWB => s_rwB, RWB => s_rwB,
CLKB => clk_B_i, CLKB => clk_portb_i,
RESETn => one, RESETn => one,
...@@ -161,7 +168,7 @@ end generate; ...@@ -161,7 +168,7 @@ end generate;
--! output of the majority voter. The majority voter considers the outputs of the three memories --! output of the majority voter. The majority voter considers the outputs of the three memories
--! and "calculates" their majority with combinatorial logic. --! and "calculates" their majority with combinatorial logic.
majority_voter: data_A_o <= (data_o_A_array(0) and data_o_A_array(1)) or majority_voter: data_porta_o <= (data_o_A_array(0) and data_o_A_array(1)) or
(data_o_A_array(1) and data_o_A_array(2)) or (data_o_A_array(1) and data_o_A_array(2)) or
(data_o_A_array(2) and data_o_A_array(0)); (data_o_A_array(2) and data_o_A_array(0));
......
wf_VAR_RDY_generator.vhd
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wf_bits_to_txd.vhd
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wf_slone_bytes_to_DATO.vhd → wf_cons_bytes_to_dato.vhd
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--________________________________________________________________________________________________| --_________________________________________________________________________________________________
-- | -- |
-- |The nanoFIP| | -- |The nanoFIP| |
-- | -- |
...@@ -7,7 +7,7 @@ ...@@ -7,7 +7,7 @@
--________________________________________________________________________________________________| --________________________________________________________________________________________________|
--------------------------------------------------------------------------------------------------- ---------------------------------------------------------------------------------------------------
--! @file WF_slone_bytes_to_DATO.vhd | --! @file wf_cons_bytes_to_dato.vhd |
--------------------------------------------------------------------------------------------------- ---------------------------------------------------------------------------------------------------
--! standard library --! standard library
...@@ -18,27 +18,28 @@ use IEEE.STD_LOGIC_1164.all; --! std_logic definitions ...@@ -18,27 +18,28 @@ use IEEE.STD_LOGIC_1164.all; --! std_logic definitions
use IEEE.NUMERIC_STD.all; --! conversion functions use IEEE.NUMERIC_STD.all; --! conversion functions
--! specific packages --! specific packages
use work.WF_PACKAGE.all; --! definitions of supplemental types, subtypes, constants use work.WF_PACKAGE.all; --! definitions of types, constants, entities
--------------------------------------------------------------------------------------------------- ---------------------------------------------------------------------------------------------------
-- -- -- --
-- WF_slone_bytes_to_DATO -- -- wf_cons_bytes_to_dato --
-- -- -- --
--------------------------------------------------------------------------------------------------- ---------------------------------------------------------------------------------------------------
-- --
-- --
--! @brief In stand-alone mode, the unit is responsible for transering the two desirialized --! @brief In stand-alone mode, if a consumed or consumed broadcast variable has been received,
--! bytes from the filedbus to the 2bytes long bus DAT_O. The bytes are put in the bus --! the unit is responsible for transering the two desirialized data-bytes from the
--! one by one as they arrive. --! filedbus to the 2-bytes long bus DAT_O. The bytes are put in the bus one by one as
--! they arrive, as signal transfer_byte_p_i indicates.
--! Note: After the reception of a correct FCS and the FES the signal VAR1_RDY/ VAR2_RDY --! Note: After the reception of a correct FCS and the FES the signal VAR1_RDY/ VAR2_RDY
--! is asserted and that signals the user that the data in DAT_O are valid and stable. --! is asserted and that signals the user that the data in DAT_O are valid and stable.
-- --
-- --
--! @author Pablo Alvarez Sanchez (pablo.alvarez.sanchez@cern.ch) --! @author Pablo Alvarez Sanchez (Pablo.Alvarez.Sanchez@cern.ch) \n
--! Evangelia Gousiou (evangelia.gousiou@cern.ch) --! Evangelia Gousiou (Evangelia.Gousiou@cern.ch) \n
-- --
-- --
--! @date 06/2010 --! @date 10/01/2011
-- --
-- --
--! @version v0.02 --! @version v0.02
...@@ -46,7 +47,9 @@ use work.WF_PACKAGE.all; --! definitions of supplemental types, subtypes, c ...@@ -46,7 +47,9 @@ use work.WF_PACKAGE.all; --! definitions of supplemental types, subtypes, c
-- --
--! @details \n --! @details \n
-- --
--! \n<b>Dependencies:</b>\n --! \n<b>Dependencies:</b> \n
--! WF_reset_unit \n
--! wf_cons_bytes_processor \n
-- --
-- --
--! \n<b>Modified by:</b>\n --! \n<b>Modified by:</b>\n
...@@ -55,6 +58,9 @@ use work.WF_PACKAGE.all; --! definitions of supplemental types, subtypes, c ...@@ -55,6 +58,9 @@ use work.WF_PACKAGE.all; --! definitions of supplemental types, subtypes, c
--------------------------------------------------------------------------------------------------- ---------------------------------------------------------------------------------------------------
-- --
--! \n\n<b>Last changes:</b>\n --! \n\n<b>Last changes:</b>\n
--! -> 11/2010 v0.01 EG unit created
--! -> 10/1/2011 v0.02 EG unit renamed from wf_slone_cons_bytes_to_dato to
--! wf_cons_bytes_to_dato; cleaning-up + commenting
-- --
--------------------------------------------------------------------------------------------------- ---------------------------------------------------------------------------------------------------
-- --
...@@ -63,78 +69,81 @@ use work.WF_PACKAGE.all; --! definitions of supplemental types, subtypes, c ...@@ -63,78 +69,81 @@ use work.WF_PACKAGE.all; --! definitions of supplemental types, subtypes, c
-- --
--------------------------------------------------------------------------------------------------- ---------------------------------------------------------------------------------------------------
---/!\----------------------------/!\----------------------------/!\-------------------------/!\---
-- Sunplify Premier D-2009.12 Warnings --
-- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
-- No Warnings! --
---------------------------------------------------------------------------------------------------
--================================================================================================= --=================================================================================================
--! Entity declaration for WF_slone_bytes_to_DATO --! Entity declaration for wf_cons_bytes_to_dato
--================================================================================================= --=================================================================================================
entity WF_slone_bytes_to_DATO is entity wf_cons_bytes_to_dato is
port ( port (
-- INPUTS -- INPUTS
-- User Interface general signals (synchronized) -- nanoFIP User Interface, General signals (synchronized with uclk)
uclk_i : in std_logic; --! 40MHz clock uclk_i : in std_logic; --! 40MHz clock
-- Signal from the WF_reset_unit unit -- Signal from the WF_reset_unit unit
nFIP_urst_i : in std_logic; --! internal reset nfip_urst_i : in std_logic; --! nanoFIP internal reset
-- Signals from WF_cons_bytes_from_rx -- Signals from the wf_cons_bytes_processor
transfer_byte_p_i: in std_logic_vector (1 downto 0); --! 01: byte_i transfered to DAT_o(7:0) transfer_byte_p_i : in std_logic_vector (1 downto 0); --! 01: byte_i transfered to DAT_O(7:0)
--! 10: byte_i transfered to DAT_o(15:8) --! 10: byte_i transfered to DAT_O(15:8)
-- Signals for the receiver WF_rx byte_i : in std_logic_vector (7 downto 0); --! de-serialised byte
byte_i : in std_logic_vector (7 downto 0); --! byte received from the rx unit
-- OUTPUTS -- OUTPUTS
-- Signal to WF_prod_bytes_to_tx -- Signal to the wf_prod_bytes_retriever
slone_data_o : out std_logic_vector (15 downto 0) --! output bus DAT_O slone_data_o : out std_logic_vector (15 downto 0) --! output bus DAT_O
); );
end entity WF_slone_bytes_to_DATO; end entity wf_cons_bytes_to_dato;
--================================================================================================= --=================================================================================================
--! architecture declaration --! architecture declaration
--================================================================================================= --=================================================================================================
architecture rtl of WF_slone_bytes_to_DATO is architecture rtl of wf_cons_bytes_to_dato is
--================================================================================================= --=================================================================================================
-- architecture begin -- architecture begin
--================================================================================================= --=================================================================================================
begin begin
--------------------------------------------------------------------------------------------------- ---------------------------------------------------------------------------------------------------
--!@brief synchronous process Data_Transfer_To_Dat_o: In stand-alone mode, accrording to the signal --!@brief synchronous process Data_Transfer_To_Dat_o: In stand-alone mode, accrording to the signal
--! transfer_byte_p_i, the first or second byte of the user interface bus DAT_o takes the --! transfer_byte_p_i, the first or second byte of the user interface bus DAT_O takes the
--! incoming byte byte_i. --! incoming byte byte_i.
Data_Transfer_To_Dat_o: process (uclk_i) Data_Transfer_To_Dat_o: process (uclk_i)
begin begin
if rising_edge(uclk_i) then if rising_edge (uclk_i) then
if nFIP_urst_i = '1' then if nfip_urst_i = '1' then
slone_data_o <= (others => '0'); -- bus initialization slone_data_o <= (others => '0'); -- bus initialization
else else
if transfer_byte_p_i(0) = '1' then -- the 1st byte is transfered in the lsb of the bus if transfer_byte_p_i(0) = '1' then -- the 1st byte is transfered in the lsb of the bus
slone_data_o(7 downto 0) <= byte_i; -- the data stays there until a new byte arrives slone_data_o(7 downto 0) <= byte_i; -- it stays there until a new cons. var arrives
end if; end if;
if transfer_byte_p_i(1) = '1' then -- the 2nd byte is transfered in the msb of the bus if transfer_byte_p_i(1) = '1' then -- the 2nd byte is transfered in the msb of the bus
slone_data_o(15 downto 8) <= byte_i; -- the data stays there until a new byte arrives slone_data_o(15 downto 8) <= byte_i; -- it stays there until a new cons. var arrives
end if; end if;
end if;
end if; end if;
end if; end process;
end process;
end architecture rtl; end architecture rtl;
......
wf_cons_frame_validator.vhd
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wf_consumption.vhd 0 → 100644
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wf_crc.vhd
View file @ c0ef0386
--________________________________________________________________________________________________| --_________________________________________________________________________________________________
-- | -- |
-- |The nanoFIP| | -- |The nanoFIP| |
-- | -- |
...@@ -18,7 +18,7 @@ use IEEE.STD_LOGIC_1164.all; --! std_logic definitions ...@@ -18,7 +18,7 @@ use IEEE.STD_LOGIC_1164.all; --! std_logic definitions
use IEEE.NUMERIC_STD.all; --! conversion functions use IEEE.NUMERIC_STD.all; --! conversion functions
--! specific packages --! specific packages
use work.WF_PACKAGE.all; --! definitions of supplemental types, subtypes, constants use work.WF_PACKAGE.all; --! definitions of types, constants, entities
--------------------------------------------------------------------------------------------------- ---------------------------------------------------------------------------------------------------
-- -- -- --
...@@ -26,15 +26,13 @@ use work.WF_PACKAGE.all; --! definitions of supplemental types, subtypes, co ...@@ -26,15 +26,13 @@ use work.WF_PACKAGE.all; --! definitions of supplemental types, subtypes, co
-- -- -- --
--------------------------------------------------------------------------------------------------- ---------------------------------------------------------------------------------------------------
-- --
-- unit name WF_crc
--
-- --
--! @brief The unit includes the modules for the generation of the CRC of serialized data, --! @brief The unit includes the modules for the generation of the CRC of serial data,
--! as well as for the verification of an incoming CRC syndrome --! as well as for the verification of an incoming CRC syndrome.
-- --
-- --
--! @author Pablo Alvarez Sanchez (Pablo.Alvarez.Sanchez@cern.ch) --! @author Pablo Alvarez Sanchez (Pablo.Alvarez.Sanchez@cern.ch)\n
--! Evangelia Gousiou (Evangelia.Gousiou@cern.ch) --! Evangelia Gousiou (Evangelia.Gousiou@cern.ch) \n
-- --
-- --
--! @date 08/2010 --! @date 08/2010
...@@ -48,17 +46,17 @@ use work.WF_PACKAGE.all; --! definitions of supplemental types, subtypes, co ...@@ -48,17 +46,17 @@ use work.WF_PACKAGE.all; --! definitions of supplemental types, subtypes, co
--! \n<b>Dependencies:</b>\n --! \n<b>Dependencies:</b>\n
-- --
-- --
--! \n<b>Modified by:</b>\n --! \n<b>Modified by:</b> \n
--! Pablo Alvarez Sanchez (Pablo.Alvarez.Sanchez@cern.ch) --! Pablo Alvarez Sanchez \n
--! Evangelia Gousiou (evangelia.gousiou@cern.ch) --! Evangelia Gousiou \n
-- --
--------------------------------------------------------------------------------------------------- ---------------------------------------------------------------------------------------------------
-- --
--! \n\n<b>Last changes:</b>\n --! \n\n<b>Last changes:</b>\n
--! 07/08/2009 v0.02 PAS Entity Ports added, start of architecture content --! -> 07/08/2009 v0.02 PAS Entity Ports added, start of architecture content \n
--! 08/2010 v0.03 EG Data_FCS_select and crc_ready_p_o signals removed, --! -> 08/2010 v0.03 EG Data_FCS_select and crc_ready_p_o signals removed,
--! variable v_q_check_mask replaced with a signal, --! variable v_q_check_mask replaced with a signal,
--! code cleaned-up+commented --! code cleaned-up+commented \n
-- --
--------------------------------------------------------------------------------------------------- ---------------------------------------------------------------------------------------------------
-- --
...@@ -66,23 +64,33 @@ use work.WF_PACKAGE.all; --! definitions of supplemental types, subtypes, co ...@@ -66,23 +64,33 @@ use work.WF_PACKAGE.all; --! definitions of supplemental types, subtypes, co
--! --!
--------------------------------------------------------------------------------------------------- ---------------------------------------------------------------------------------------------------
---/!\----------------------------/!\----------------------------/!\-------------------------/!\---
-- Sunplify Premier D-2009.12 Warnings --
-- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
-- No Warnings --
---------------------------------------------------------------------------------------------------
--================================================================================================= --=================================================================================================
--! Entity declaration for WF_crc --! Entity declaration for WF_crc
--================================================================================================= --=================================================================================================
entity WF_crc is entity WF_crc is
generic(c_GENERATOR_POLY_length : natural); generic (c_GENERATOR_POLY_length : natural := 16); --! default value
port ( port (
-- INPUTS -- INPUTS
uclk_i : in std_logic; --! 40 MHz clock -- Inputs from the wf_rx_deserializer/ wf_tx_serializer
nFIP_urst_i : in std_logic; --! internal reset uclk_i : in std_logic; --! 40 MHz clock
start_CRC_p_i : in std_logic; --! signaling the beginning of the CRC calculation nfip_urst_i : in std_logic; --! nanoFIP internal reset
data_bit_i : in std_logic; --! incoming data bit stream start_crc_p_i : in std_logic; --! beginning of the CRC calculation
data_bit_ready_p_i : in std_logic; --! signaling that data_bit_i can be sampled data_bit_i : in std_logic; --! incoming data bit stream
data_bit_ready_p_i : in std_logic; --! indicator of sampling time for data_bit_i
-- OUTPUTS -- OUTPUTS
CRC_ok_p : out std_logic; --! signaling of a correct received CRC syndrome -- Signal to the wf_rx_deserializer
CRC_o : out std_logic_vector (c_GENERATOR_POLY_length-1 downto 0)--!calculated CRC crc_ok_p : out std_logic; --! signaling of a correct received CRC syndrome
-- Signal to the wf_tx_serializer
crc_o : out std_logic_vector (c_GENERATOR_POLY_length-1 downto 0)--!calculated CRC
); );
end entity WF_crc; end entity WF_crc;
...@@ -93,7 +101,7 @@ end entity WF_crc; ...@@ -93,7 +101,7 @@ end entity WF_crc;
--================================================================================================= --=================================================================================================
architecture rtl of WF_crc is architecture rtl of WF_crc is
signal s_crc_bit_ready_p : std_logic; signal s_crc_bit_ready_p : std_logic;
signal s_q, s_q_nx, s_q_check_mask : std_logic_vector (c_GENERATOR_POLY_length - 1 downto 0); signal s_q, s_q_nx, s_q_check_mask : std_logic_vector (c_GENERATOR_POLY_length - 1 downto 0);
--================================================================================================= --=================================================================================================
...@@ -102,38 +110,41 @@ signal s_q, s_q_nx, s_q_check_mask : std_logic_vector (c_GENERATOR_POLY_length ...@@ -102,38 +110,41 @@ signal s_q, s_q_nx, s_q_check_mask : std_logic_vector (c_GENERATOR_POLY_length
begin begin
--------------------------------------------------------------------------------------------------- ---------------------------------------------------------------------------------------------------
--!@brief The gen_16_bit_Register_and_Interconnections generator, follows the scheme of figure A.1 --!@brief The Gen_16_bit_Register_and_Interconnections generator, follows the scheme of figure A.1
--! of the Annex A 61158-4-7 IEC:2007 and constructs a register of 16 master-slave flip-flops which --! of the Annex A 61158-4-7 IEC:2007 and constructs a register of 16 master-slave flip-flops which
--! are interconnected as a linear feedback shift register. --! are interconnected as a linear feedback shift register.
gen_16_bit_Register_and_Interconnections: for I in 0 to c_GENERATOR_POLY'left generate Gen_16_bit_Register_and_Interconnections:
iteration_0: if I = 0 generate for I in 0 to c_GENERATOR_POLY'left generate
s_q_nx(I) <= ((data_bit_i) xor s_q(s_q'left));
end generate; iteration_0: if I = 0 generate
s_q_nx(I) <= ((data_bit_i) xor s_q(s_q'left));
end generate;
iterations: if I > 0 generate next_iterations: if I > 0 generate
s_q_nx(I) <= s_q(I-1) xor (c_GENERATOR_POLY(I) and (data_bit_i xor s_q(s_q'left))); s_q_nx(I) <= s_q(I-1) xor (c_GENERATOR_POLY(I) and (data_bit_i xor s_q(s_q'left)));
end generate; end generate;
end generate; end generate;
--------------------------------------------------------------------------------------------------- ---------------------------------------------------------------------------------------------------
--!@brief Synchronous process CRC_calculation: the process "moves" the shift register described --!@brief Synchronous process CRC_calculation: the process "moves" the shift register described
--! above, for the calculation of the CRC --! above, for the calculation of the CRC
CRC_calculation: process(uclk_i) CRC_calculation: process (uclk_i)
begin begin
if rising_edge(uclk_i) then if rising_edge (uclk_i) then
if nFIP_urst_i = '1' then
s_q <= (others => '1'); -- register initialization if nfip_urst_i = '1' then
-- (initially preset, according to annex A) s_q <= (others => '0');
else else
if start_CRC_p_i = '1' then if start_crc_p_i = '1' then
s_q <= (others => '1'); -- register initialization s_q <= (others => '1'); -- register initialization
-- (initially preset, according to the Annex)
elsif data_bit_ready_p_i = '1' then -- new data bit to be considered for the CRC calculation elsif data_bit_ready_p_i = '1' then -- new data bit to be considered for the CRC calculation
s_q <= s_q_nx; -- data propagation s_q <= s_q_nx; -- data propagation
...@@ -146,27 +157,27 @@ begin ...@@ -146,27 +157,27 @@ begin
end process; end process;
-- -- -- -- -- -- -- -- -- --
CRC_o <= not s_q; crc_o <= not s_q;
--------------------------------------------------------------------------------------------------- ---------------------------------------------------------------------------------------------------
--!@brief Combinatorial process Syndrome_Verification: On the reception, the CRC is being --!@brief Combinatorial process Syndrome_Verification: On the reception, the CRC is being
--! calculated as data is arriving (same as in the transmission) and it is being compared to the --! calculated as data is arriving (same as in the transmission) and it is being compared to the
--! predefined c_VERIFICATION_MASK. When the CRC calculated from the received data maches the --! predefined c_VERIFICATION_MASK. When the CRC calculated from the received data matches the
--! c_VERIFICATION_MASK, it means a correct CRC word has been received and the signal CRC_ok_p --! c_VERIFICATION_MASK, it is implied that a correct CRC word has been received and the signal
--! gives a pulse. --! crc_ok_p gives a pulse.
Syndrome_Verification: process(s_q, s_crc_bit_ready_p) Syndrome_Verification: process (s_q, s_crc_bit_ready_p)
begin begin
s_q_check_mask <= s_q xor c_VERIFICATION_MASK; s_q_check_mask <= s_q xor c_VERIFICATION_MASK;
if (unsigned(not s_q_check_mask)) = 0 then if (unsigned(not s_q_check_mask)) = 0 then
CRC_ok_p <= s_crc_bit_ready_p; crc_ok_p <= s_crc_bit_ready_p;
else else
CRC_ok_p <= '0'; crc_ok_p <= '0';
end if; end if;
end process; end process;
......
wf_decr_counter.vhd
View file @ c0ef0386
--_________________________________________________________________________________________________
-- |
-- |The nanoFIP| |
-- |
-- CERN,BE/CO-HT |
--________________________________________________________________________________________________|
--________________________________________________________________________________________________|
--------------------------------------------------------------------------------------------------- ---------------------------------------------------------------------------------------------------
--! @file WF_decr_counter.vhd --! @file WF_decr_counter.vhd
--------------------------------------------------------------------------------------------------- ---------------------------------------------------------------------------------------------------
...@@ -13,22 +21,21 @@ use IEEE.NUMERIC_STD.all; --! conversion functions ...@@ -13,22 +21,21 @@ use IEEE.NUMERIC_STD.all; --! conversion functions
-- -- -- --
-- WF_decr_counter -- -- WF_decr_counter --
-- -- -- --
-- CERN, BE/CO/HT --
-- --
--------------------------------------------------------------------------------------------------- ---------------------------------------------------------------------------------------------------
-- --
-- --
--! @brief Synchronous decreasing counter with a load enable and decrease enable signals; --! @brief Synchronous decreasing counter with a reset, a load enable & a decrease
--! enable signal.
-- --
-- --
--! @author Pablo Alvarez Sanchez (pablo.alvarez.sanchez@cern.ch) --! @author Pablo Alvarez Sanchez (Pablo.Alvarez.Sanchez@cern.ch)
--! Evangelia Gousiou (evangelia.gousiou@cern.ch) --! Evangelia Gousiou (Evangelia.Gousiou@cern.ch)
-- --
-- --
--! @date 06/2010 --! @date 10/2010
-- --
-- --
--! @version v0.02 --! @version v0.01
-- --
-- --
--! @details \n --! @details \n
...@@ -37,7 +44,6 @@ use IEEE.NUMERIC_STD.all; --! conversion functions ...@@ -37,7 +44,6 @@ use IEEE.NUMERIC_STD.all; --! conversion functions
-- --
-- --
--! \n<b>Modified by:</b>\n --! \n<b>Modified by:</b>\n
--! Evangelia Gousiou (Evangelia.Gousiou@cern.ch)
-- --
--------------------------------------------------------------------------------------------------- ---------------------------------------------------------------------------------------------------
-- --
...@@ -50,31 +56,37 @@ use IEEE.NUMERIC_STD.all; --! conversion functions ...@@ -50,31 +56,37 @@ use IEEE.NUMERIC_STD.all; --! conversion functions
-- --
--------------------------------------------------------------------------------------------------- ---------------------------------------------------------------------------------------------------
---/!\----------------------------/!\----------------------------/!\-------------------------/!\---
-- Sunplify Premier D-2009.12 Warnings --
-- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
-- No Warnings --
---------------------------------------------------------------------------------------------------
--================================================================================================= --=================================================================================================
--! Entity declaration for WF_decr_counter --! Entity declaration for WF_decr_counter
--================================================================================================= --=================================================================================================
entity WF_decr_counter is entity WF_decr_counter is
generic(counter_length : natural); generic (g_counter_lgth : natural := 4); --! default length
port ( port (
-- INPUTS -- INPUTS
-- User Interface general signals (synchronized) -- nanoFIP User Interface general signal
uclk_i : in std_logic; --! 40MHz clock uclk_i : in std_logic; --! 40MHz clock
-- Signal from the WF_reset_unit unit -- Signal from the WF_reset_unit
nFIP_urst_i : in std_logic; --! internal reset nfip_urst_i : in std_logic; --! nanoFIP internal reset
-- Signals from any unit -- Signals from any unit
counter_top : in unsigned (counter_length-1 downto 0); --! load value counter_top : in unsigned (g_counter_lgth-1 downto 0); --! load value
counter_load_i : in std_logic; --! load enable counter_load_i : in std_logic; --! load enable
counter_decr_p_i : in std_logic; --! decrement enable counter_decr_p_i : in std_logic; --! decrement enable
-- OUTPUTS -- OUTPUTS
-- Signal to any unit -- Signal to any unit
counter_o : out unsigned (counter_length-1 downto 0);--! counter counter_o : out unsigned (g_counter_lgth-1 downto 0); --! counter
counter_is_zero_o : out std_logic --! empty counter indication counter_is_zero_o : out std_logic --! empty counter indication
); );
end entity WF_decr_counter; end entity WF_decr_counter;
...@@ -84,18 +96,20 @@ end entity WF_decr_counter; ...@@ -84,18 +96,20 @@ end entity WF_decr_counter;
--================================================================================================= --=================================================================================================
architecture rtl of WF_decr_counter is architecture rtl of WF_decr_counter is
signal s_counter : unsigned(counter_length-1 downto 0); signal s_counter : unsigned(g_counter_lgth-1 downto 0);
--================================================================================================= --=================================================================================================
-- architecture begin -- architecture begin
--================================================================================================= --=================================================================================================
begin begin
--------------------------------------------------------------------------------------------------- ---------------------------------------------------------------------------------------------------
Decr_Counter: process(uclk_i) -- Synchronous process Decr_Counter
Decr_Counter: process (uclk_i)
begin begin
if rising_edge(uclk_i) then if rising_edge (uclk_i) then
if nFIP_urst_i = '1' then
if nfip_urst_i = '1' then
s_counter <= (others => '0'); s_counter <= (others => '0');
else else
...@@ -110,8 +124,8 @@ signal s_counter : unsigned(counter_length-1 downto 0); ...@@ -110,8 +124,8 @@ signal s_counter : unsigned(counter_length-1 downto 0);
end if; end if;
end process; end process;
-- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
-- Concurrent assignments for output signals
counter_o <= s_counter; counter_o <= s_counter;
counter_is_zero_o <= '1' when s_counter = to_unsigned(0,s_counter'length) else '0'; counter_is_zero_o <= '1' when s_counter = to_unsigned(0,s_counter'length) else '0';
......
wf_engine_control.vhd
View file @ c0ef0386
This diff is collapsed.
wf_incr_counter.vhd
View file @ c0ef0386
--________________________________________________________________________________________________| --_________________________________________________________________________________________________
-- | -- |
-- |The nanoFIP| | -- |The nanoFIP| |
-- | -- |
...@@ -24,17 +24,18 @@ use IEEE.NUMERIC_STD.all; --! conversion functions ...@@ -24,17 +24,18 @@ use IEEE.NUMERIC_STD.all; --! conversion functions
--------------------------------------------------------------------------------------------------- ---------------------------------------------------------------------------------------------------
-- --
-- --
--! @brief Fully synchronous increasing counter with a reset, a reinitialise & an enable signal --! @brief Synchronous increasing counter with a reset, a reinitialise and an increase
--! enable signal.
-- --
-- --
--! @author Pablo Alvarez Sanchez (pablo.alvarez.sanchez@cern.ch) --! @author Pablo Alvarez Sanchez (Pablo.Alvarez.Sanchez@cern.ch)
--! Evangelia Gousiou (evangelia.gousiou@cern.ch) --! Evangelia Gousiou (Evangelia.Gousiou@cern.ch)
-- --
-- --
--! @date 06/2010 --! @date 10/2010
-- --
-- --
--! @version v0.02 --! @version v0.01
-- --
-- --
--! @details \n --! @details \n
...@@ -43,7 +44,6 @@ use IEEE.NUMERIC_STD.all; --! conversion functions ...@@ -43,7 +44,6 @@ use IEEE.NUMERIC_STD.all; --! conversion functions
-- --
-- --
--! \n<b>Modified by:</b>\n --! \n<b>Modified by:</b>\n
--! Evangelia Gousiou (Evangelia.Gousiou@cern.ch)
-- --
--------------------------------------------------------------------------------------------------- ---------------------------------------------------------------------------------------------------
-- --
...@@ -62,24 +62,25 @@ use IEEE.NUMERIC_STD.all; --! conversion functions ...@@ -62,24 +62,25 @@ use IEEE.NUMERIC_STD.all; --! conversion functions
--================================================================================================= --=================================================================================================
entity WF_incr_counter is entity WF_incr_counter is
generic(counter_length : natural); generic (g_counter_lgth : natural := 4); --! default length
port ( port (
-- INPUTS -- INPUTS
-- User Interface general signals (synchronized) -- nanoFIP User Interface general signal
uclk_i : in std_logic; --! 40MHz clock uclk_i : in std_logic; --! 40MHz clock
-- Signal from the WF_reset_unit unit -- Signal from the WF_reset_unit
nFIP_urst_i : in std_logic; --! internal reset nfip_urst_i : in std_logic; --! nanoFIP internal reset
-- Signals from any unit -- Signals from any unit
reinit_counter_i : in std_logic; --! reinitializes counter to 0 reinit_counter_i : in std_logic; --! reinitializes counter to 0
incr_counter_i: in std_logic; --! increment enable incr_counter_i : in std_logic; --! increment enable
-- OUTPUT -- OUTPUT
-- Signal to any unit -- Signal to any unit
counter_o : out unsigned(counter_length-1 downto 0); --! counter counter_o : out unsigned(g_counter_lgth-1 downto 0); --! counter
counter_is_full_o : out std_logic --! all counter bits at '1' counter_is_full_o : out std_logic --! counter full indication
); ); --! (all bits to '1')
end entity WF_incr_counter; end entity WF_incr_counter;
...@@ -88,35 +89,39 @@ end entity WF_incr_counter; ...@@ -88,35 +89,39 @@ end entity WF_incr_counter;
--================================================================================================= --=================================================================================================
architecture rtl of WF_incr_counter is architecture rtl of WF_incr_counter is
signal s_counter, s_counter_full : unsigned(counter_length-1 downto 0); signal c_COUNTER_FULL : unsigned(g_counter_lgth-1 downto 0);
signal s_counter : unsigned(g_counter_lgth-1 downto 0);
--================================================================================================= --=================================================================================================
-- architecture begin -- architecture begin
--================================================================================================= --=================================================================================================
begin begin
c_COUNTER_FULL <= (others => '1');
s_counter_full <= (others => '1');
--------------------------------------------------------------------------------------------------- ---------------------------------------------------------------------------------------------------
Incr_Counter: process(uclk_i) -- Synchronous process Incr_Counter
Incr_Counter: process (uclk_i)
begin begin
if rising_edge (uclk_i) then
if rising_edge(uclk_i) then if nfip_urst_i = '1' then
if nFIP_urst_i = '1' then s_counter <= (others => '0');
s_counter <= (others => '0');
elsif reinit_counter_i = '1' then elsif reinit_counter_i = '1' then
s_counter <= (others => '0'); s_counter <= (others => '0');
elsif incr_counter_i = '1' then elsif incr_counter_i = '1' then
s_counter <= s_counter + 1; s_counter <= s_counter + 1;
end if; end if;
end if; end if;
end process; end process;
-- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
-- Concurrent assignments for output signals
counter_o <= s_counter; counter_o <= s_counter;
counter_is_full_o <= '1' when s_counter= s_counter_full counter_is_full_o <= '1' when s_counter = c_COUNTER_FULL else '0';
else '0';
end architecture rtl; end architecture rtl;
--================================================================================================= --=================================================================================================
......
wf_inputs_synchronizer.vhd
View file @ c0ef0386
This diff is collapsed.
wf_manch_code_viol_check.vhd
View file @ c0ef0386
--________________________________________________________________________________________________| --_________________________________________________________________________________________________
-- | -- |
-- |The nanoFIP| | -- |The nanoFIP| |
-- | -- |
...@@ -7,7 +7,7 @@ ...@@ -7,7 +7,7 @@
--________________________________________________________________________________________________| --________________________________________________________________________________________________|
--------------------------------------------------------------------------------------------------- ---------------------------------------------------------------------------------------------------
--! @file WF_decr_counter.vhd --! @file WF_manch_code_viol_check.vhd
--------------------------------------------------------------------------------------------------- ---------------------------------------------------------------------------------------------------
--! standard library --! standard library
...@@ -18,7 +18,7 @@ use IEEE.STD_LOGIC_1164.all; --! std_logic definitions ...@@ -18,7 +18,7 @@ use IEEE.STD_LOGIC_1164.all; --! std_logic definitions
use IEEE.NUMERIC_STD.all; --! conversion functions use IEEE.NUMERIC_STD.all; --! conversion functions
--! specific packages --! specific packages
use work.WF_PACKAGE.all; --! definitions of supplemental types, subtypes, constants use work.WF_PACKAGE.all; --! definitions of types, constants, entities
--------------------------------------------------------------------------------------------------- ---------------------------------------------------------------------------------------------------
-- -- -- --
...@@ -27,10 +27,19 @@ use work.WF_PACKAGE.all; --! definitions of supplemental types, subtypes, c ...@@ -27,10 +27,19 @@ use work.WF_PACKAGE.all; --! definitions of supplemental types, subtypes, c
--------------------------------------------------------------------------------------------------- ---------------------------------------------------------------------------------------------------
-- --
-- --
--! @brief The unit follows an incoming serial signal and outputs a pulse --! @brief The unit follows the incoming deglitched serial signal and outputs a pulse if a
--! if a manchester 2 code violation is detected. --! Manchester 2 (manch.) code violation is detected.
--! It is assumed that a violation happens if after half reception period --! It is assumed that a violation happens if after a half-bit-clock period (plus 2 uclk
--! plus 2 uclck periods, the incoming signal has not had a transition. --! periods), the incoming signal has not had a transition.
--! Note: the term sample_manch_bit_p refers to the moments when a manch. encoded bit
--! should be sampled (before and after a significant edge), whereas the
--! sample_bit_p includes only the sampling of the 1st part, before the transition.
--! Example:
--! bit : 0
--! manch. encoded : _|-
--! sample_manch_bit_p : ^ ^
--! sample_bit_p : ^ (this sampling will give the 0)
-- --
-- --
--! @author Pablo Alvarez Sanchez (Pablo.Alvarez.Sanchez@cern.ch) --! @author Pablo Alvarez Sanchez (Pablo.Alvarez.Sanchez@cern.ch)
...@@ -54,6 +63,7 @@ use work.WF_PACKAGE.all; --! definitions of supplemental types, subtypes, c ...@@ -54,6 +63,7 @@ use work.WF_PACKAGE.all; --! definitions of supplemental types, subtypes, c
--------------------------------------------------------------------------------------------------- ---------------------------------------------------------------------------------------------------
-- --
--! \n\n<b>Last changes:</b>\n --! \n\n<b>Last changes:</b>\n
--! -> 12/12/2010 v0.02 EG cleaning-up+commenting
-- --
--------------------------------------------------------------------------------------------------- ---------------------------------------------------------------------------------------------------
-- --
...@@ -70,21 +80,21 @@ use work.WF_PACKAGE.all; --! definitions of supplemental types, subtypes, c ...@@ -70,21 +80,21 @@ use work.WF_PACKAGE.all; --! definitions of supplemental types, subtypes, c
entity WF_manch_code_viol_check is entity WF_manch_code_viol_check is
port ( port (
-- INPUTS -- INPUTS
-- User Interface general signals (synchronized) -- nanoFIP User Interface general signal
uclk_i : in std_logic; --! 40MHz clock uclk_i : in std_logic; --! 40MHz clock
-- Signal from the WF_reset_unit unit -- Signal from the WF_reset_unit
nFIP_urst_i : in std_logic; --! internal reset nfip_urst_i : in std_logic; --! nanoFIP internal reset
-- Signals from WF_rx -- Signals from the wf_rx_deserializer
serial_input_signal_i : in std_logic; --! input signal serial_input_signal_i : in std_logic; --! input signal
sample_bit_p_i : in std_logic; --! pulse for the sampling of a new bit sample_bit_p_i : in std_logic; --! pulse for the sampling of a new bit
sample_manch_bit_p_i : in std_logic; --! pulse for the sampling of a new manch. bit sample_manch_bit_p_i : in std_logic; --! pulse for the sampling of a new manch. bit
-- OUTPUTS -- OUTPUTS
-- Signal to WF_rx -- Signal to the wf_rx_deserializer
manch_code_viol_p_o : out std_logic --! pulse indicating a code violation manch_code_viol_p_o : out std_logic --! pulse indicating a code violation
); );
end entity WF_manch_code_viol_check; end entity WF_manch_code_viol_check;
...@@ -99,32 +109,29 @@ signal s_sample_bit_p_d1,s_sample_bit_p_d2,s_check_code_viol_p,s_serial_input_si ...@@ -99,32 +109,29 @@ signal s_sample_bit_p_d1,s_sample_bit_p_d2,s_check_code_viol_p,s_serial_input_si
--================================================================================================= --=================================================================================================
-- architecture begin -- architecture begin
--================================================================================================= --=================================================================================================
begin begin
---------------------------------------------------------------------------------------------------
--------------------------------------------------------------------------------------------------- ---------------------------------------------------------------------------------------------------
--!@brief Synchronous process Check_Code_Violations:in order to check the existance code violations --!@brief Synchronous process Check_Code_Violations: in order to check for code violations, the
--! the input signal is delayed by half reception period. --! input signal is delayed by half-bit-clock period (serial_input_signal_d).
--! The signal check_code_viol_p is a pulse with period the reception period. The pulse occurs --! The signal check_code_viol_p is a pulse occuring 2 uclk periods after a manch. transition is
--! 2 uclk periods after a manch. transition is expected. --! expected.
--! As the following drawing roughly indicates, a violation exists if the signal and its delayed --! As the following drawing roughly indicates, a violation exists if the signal and its delayed
--! version are identical on the s_check_code_viol_p moments. --! version are identical on the check_code_viol_p moments.
-- 0 V- 1 -- 0 V- 1
-- rxd_filtered_o: __|--|____|--|__ -- rxd_filtered : __|--|____|--|__
-- s_serial_input_signal_d: __|--|____|--|__ -- serial_input_signal_d : __|--|____|--|__
-- s_check_code_viol_p: ^ ^ ^ -- check_code_viol : ^ ^ ^
Check_code_violations: process(uclk_i) Check_code_violations: process (uclk_i)
begin begin
if rising_edge (uclk_i) then if rising_edge (uclk_i) then
if nFIP_urst_i = '1' then if nfip_urst_i = '1' then
s_check_code_viol_p <='0'; s_check_code_viol_p <= '0';
s_sample_bit_p_d1 <='0'; s_sample_bit_p_d1 <= '0';
s_sample_bit_p_d2 <='0'; s_sample_bit_p_d2 <= '0';
s_serial_input_signal_d <='0'; s_serial_input_signal_d <= '0';
else else
...@@ -132,16 +139,17 @@ signal s_sample_bit_p_d1,s_sample_bit_p_d2,s_check_code_viol_p,s_serial_input_si ...@@ -132,16 +139,17 @@ signal s_sample_bit_p_d1,s_sample_bit_p_d2,s_check_code_viol_p,s_serial_input_si
s_serial_input_signal_d <= serial_input_signal_i; s_serial_input_signal_d <= serial_input_signal_i;
end if; end if;
s_check_code_viol_p <= s_sample_bit_p_d2; -- small delay s_check_code_viol_p <= s_sample_bit_p_d2; -- 2 uclk ticks delay
s_sample_bit_p_d2 <= s_sample_bit_p_d1; s_sample_bit_p_d2 <= s_sample_bit_p_d1;
s_sample_bit_p_d1 <= sample_bit_p_i; s_sample_bit_p_d1 <= sample_bit_p_i;
end if; end if;
end if; end if;
end process; end process;
-- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
manch_code_viol_p_o <= s_check_code_viol_p and -- Concurrent signal assignment
(not (serial_input_signal_i xor s_serial_input_signal_d)); manch_code_viol_p_o <= s_check_code_viol_p and
(not (serial_input_signal_i xor s_serial_input_signal_d));
end architecture rtl; end architecture rtl;
......
wf_manch_encoder.vhd
View file @ c0ef0386
--================================================================================================= --_________________________________________________________________________________________________
--! @file wf_manch_encoder.vhd -- |
--================================================================================================= -- |The nanoFIP| |
-- |
-- CERN,BE/CO-HT |
--________________________________________________________________________________________________|
--________________________________________________________________________________________________|
---------------------------------------------------------------------------------------------------
--! @file WF_manch_encoder.vhd
---------------------------------------------------------------------------------------------------
--! standard library --! standard library
library IEEE; library IEEE;
...@@ -9,26 +17,25 @@ library IEEE; ...@@ -9,26 +17,25 @@ library IEEE;
use IEEE.STD_LOGIC_1164.all; --! std_logic definitions use IEEE.STD_LOGIC_1164.all; --! std_logic definitions
use IEEE.NUMERIC_STD.all; --! conversion functions use IEEE.NUMERIC_STD.all; --! conversion functions
--! specific packages
use work.WF_PACKAGE.all; --! definitions of supplemental types, subtypes, constants
--------------------------------------------------------------------------------------------------- ---------------------------------------------------------------------------------------------------
-- -- -- --
-- wf_manch_encoder -- -- WF_manch_encoder --
-- --
-- CERN, BE/CO/HT --
-- -- -- --
--------------------------------------------------------------------------------------------------- ---------------------------------------------------------------------------------------------------
-- --
-- --
--! @brief --! @brief Encoding of a word to its Manchester 2 (manch.) equivalent.
--! This code ensures that there is one transition for each bit.
--! bit : "0" "1"
--! manch. encoded : "0 1" "1 0"
--! scheme : _|- -|_
-- --
-- --
--! @author Pablo Alvarez Sanchez (pablo.alvarez.sanchez@cern.ch) --! @author Pablo Alvarez Sanchez (Pablo.Alvarez.Sanchez@cern.ch)\n
--! Evangelia Gousiou (evangelia.gousiou@cern.ch) --! Evangelia Gousiou (Evangelia.Gousiou@cern.ch) \n
-- --
-- --
--! @date 06/2010 --! @date 10/12/2010
-- --
-- --
--! @version v0.02 --! @version v0.02
...@@ -39,12 +46,15 @@ use work.WF_PACKAGE.all; --! definitions of supplemental types, subtypes, c ...@@ -39,12 +46,15 @@ use work.WF_PACKAGE.all; --! definitions of supplemental types, subtypes, c
--! \n<b>Dependencies:</b>\n --! \n<b>Dependencies:</b>\n
-- --
-- --
--! \n<b>Modified by:</b>\n --! \n<b>Modified by:</b> \n
--! Evangelia Gousiou (Evangelia.Gousiou@cern.ch) --! Evangelia Gousiou \n
-- --
--------------------------------------------------------------------------------------------------- ---------------------------------------------------------------------------------------------------
-- --
--! \n\n<b>Last changes:</b>\n --! \n\n<b>Last changes:</b>\n
--! -> 11/2010 v0.01 EG 1st version \n
--! -> 12/2010 v0.02 EG cleaned-up, commented \n
--!
-- --
--------------------------------------------------------------------------------------------------- ---------------------------------------------------------------------------------------------------
-- --
...@@ -53,21 +63,26 @@ use work.WF_PACKAGE.all; --! definitions of supplemental types, subtypes, c ...@@ -53,21 +63,26 @@ use work.WF_PACKAGE.all; --! definitions of supplemental types, subtypes, c
-- --
--------------------------------------------------------------------------------------------------- ---------------------------------------------------------------------------------------------------
---/!\----------------------------/!\----------------------------/!\-------------------------/!\---
-- Sunplify Premier D-2009.12 Warnings --
-- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
-- No Warnings --
---------------------------------------------------------------------------------------------------
--================================================================================================= --=================================================================================================
--! Entity declaration for wf_manch_encoder --! Entity declaration for wf_manch_encoder
--================================================================================================= --=================================================================================================
entity wf_manch_encoder is entity wf_manch_encoder is
generic(word_length : natural);
generic (word_length : natural := 8); --! default length: 8
port ( port (
-- INPUT -- INPUT
word_i : in std_logic_vector(word_length-1 downto 0); --! input word
word_i : in std_logic_vector(word_length-1 downto 0);
-- OUTPUT -- OUTPUT
word_manch_o : out std_logic_vector((2*word_length)-1 downto 0) --! output encoded word
word_manch_o : out std_logic_vector((2*word_length)-1 downto 0)
); );
end entity wf_manch_encoder; end entity wf_manch_encoder;
...@@ -79,20 +94,24 @@ architecture rtl of wf_manch_encoder is ...@@ -79,20 +94,24 @@ architecture rtl of wf_manch_encoder is
--================================================================================================= --=================================================================================================
-- architecture begin -- architecture begin
--================================================================================================= --=================================================================================================
begin begin
--------------------------------------------------------------------------------------------------- ---------------------------------------------------------------------------------------------------
--! @brief combinatorial process Manchester_Encoder_byte: The process takes a byte (8 bits) and --! @brief Combinatorial process Manchester_Encoder: The process takes a word (ex. 8 bits) and
--! creates its manchester encoded equivalent (16 bits). Each bit '1' is replaced by '10' and each --! creates its manchester encoded equivalent (ex. 16 bits).
--! bit '0' by '01'. --! Each bit '1' is replaced by '10' and each bit '0' by '01'.
Manchester_Encoder_byte: process(word_i) Manchester_Encoder: process (word_i)
begin begin
for I in word_i'range loop for I in word_i'range loop
word_manch_o(I*2) <= not word_i(I); word_manch_o(I*2) <= not word_i(I);
word_manch_o(I*2+1) <= word_i(I); word_manch_o(I*2+1) <= word_i(I);
end loop; end loop;
end process; end process;
......
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...@@ -10,7 +10,7 @@ use IEEE.STD_LOGIC_1164.all; --! std_logic definitions ...@@ -10,7 +10,7 @@ use IEEE.STD_LOGIC_1164.all; --! std_logic definitions
use IEEE.NUMERIC_STD.all; --! conversion functions use IEEE.NUMERIC_STD.all; --! conversion functions
--! specific packages --! specific packages
use work.WF_PACKAGE.all; --! definitions of supplemental types, subtypes, constants use work.WF_PACKAGE.all; --! definitions of types, constants, entities
--------------------------------------------------------------------------------------------------- ---------------------------------------------------------------------------------------------------
...@@ -28,7 +28,7 @@ use work.WF_PACKAGE.all; --! definitions of supplemental types, subtypes, c ...@@ -28,7 +28,7 @@ use work.WF_PACKAGE.all; --! definitions of supplemental types, subtypes, c
-- --
-- --
--! @author Erik van der Bij (Erik.van.der.Bij@cern.ch) --! @author Erik van der Bij (Erik.van.der.Bij@cern.ch)
--! Pablo Alvarez Sanchez (pablo.alvarez.sanchez@cern.ch) --! Pablo Alvarez Sanchez (Pablo.Alvarez.Sanchez@cern.ch)
--! Evangelia Gousiou (Evangelia.Gousiou@cern.ch) --! Evangelia Gousiou (Evangelia.Gousiou@cern.ch)
-- --
-- --
...@@ -40,12 +40,12 @@ use work.WF_PACKAGE.all; --! definitions of supplemental types, subtypes, c ...@@ -40,12 +40,12 @@ use work.WF_PACKAGE.all; --! definitions of supplemental types, subtypes, c
-- --
--! @details --! @details
-- --
--! \n<b>Dependencies:</b>\n --! \n<b>Dependencies:</b> \n
--! WF_cons_bytes_from_rx\n --! wf_cons_bytes_processor \n
-- --
-- --
--! \n<b>Modified by:</b>\n --! \n<b>Modified by:</b>\n
--! Pablo Alvarez Sanchez (pablo.alvarez.sanchez@cern.ch) \n --! Pablo Alvarez Sanchez (Pablo.Alvarez.Sanchez@cern.ch) \n
--! Evangelia Gousiou (Evangelia.Gousiou@cern.ch) \n --! Evangelia Gousiou (Evangelia.Gousiou@cern.ch) \n
-- --
--------------------------------------------------------------------------------------------------- ---------------------------------------------------------------------------------------------------
...@@ -69,28 +69,28 @@ use work.WF_PACKAGE.all; --! definitions of supplemental types, subtypes, c ...@@ -69,28 +69,28 @@ use work.WF_PACKAGE.all; --! definitions of supplemental types, subtypes, c
entity WF_reset_unit is entity WF_reset_unit is
port ( port (
-- INPUTS -- INPUTS
-- User Interface general signals (synchronized) (after synchronization) -- nanoFIP User Interface, General signals (synchronized with uclk) (after synchronization)
uclk_i : in std_logic; --! 40 MHz clock uclk_i : in std_logic; --! 40 MHz clock
urst_i : in std_logic; --! initialisation control, active low urst_i : in std_logic; --! initialisation control, active low
urst_r_edge_i : in std_logic; urst_r_edge_i : in std_logic;
subs_i : in std_logic_vector (7 downto 0); --! Subscriber number coding subs_i : in std_logic_vector (7 downto 0); --! Subscriber number coding
rate_i : in std_logic_vector (1 downto 0); rate_i : in std_logic_vector (1 downto 0);
-- Signal from the central control unit WF_engine_control -- Signal from the central control unit WF_engine_control
var_i : in t_var; --! variable type var_i : in t_var; --! variable type that is being treated
rst_nFIP_and_FD_p_i : in std_logic; rst_nFIP_and_FD_p_i : in std_logic;
assert_RSTON_p_i : in std_logic; assert_RSTON_p_i : in std_logic;
-- OUTPUTS -- OUTPUTS
-- nanoFIP internal reset -- nanoFIP internal reset
nFIP_rst_o : out std_logic; --! nanoFIP internal reset, active high nFIP_rst_o : out std_logic; --! nanoFIP internal reset, active high
-- nanoFIP output to the User Interface -- nanoFIP User Interface output
rston_o : out std_logic; --! reset output, active low rston_o : out std_logic; --! reset output, active low
-- nanoFIP output to FIELDRIVE -- nanoFIP FIELDRIVE output
fd_rstn_o : out std_logic --! FIELDRIVE reset, active low fd_rstn_o : out std_logic --! FIELDRIVE reset, active low
); );
end entity WF_reset_unit; end entity WF_reset_unit;
...@@ -108,7 +108,7 @@ architecture rtl of WF_reset_unit is ...@@ -108,7 +108,7 @@ architecture rtl of WF_reset_unit is
--================================================================================================= --=================================================================================================
-- architecture begin -- architecture begin
--================================================================================================= --=================================================================================================
begin begin
--------------------------------------------------------------------------------------------------- ---------------------------------------------------------------------------------------------------
--!@brief Synchronous process s_rst_creation: the process follows the (buffered) input signal rstin --!@brief Synchronous process s_rst_creation: the process follows the (buffered) input signal rstin
...@@ -117,7 +117,7 @@ architecture rtl of WF_reset_unit is ...@@ -117,7 +117,7 @@ architecture rtl of WF_reset_unit is
s_rst_creation: process (uclk_i) s_rst_creation: process (uclk_i)
begin begin
if rising_edge(uclk_i) then if rising_edge (uclk_i) then
if (urst_i = '1') then -- when the rstin in ON if (urst_i = '1') then -- when the rstin in ON
if (s_rstin_c(s_rstin_c'left) = '0') then -- counter counts until 16 (then stays at 16) if (s_rstin_c(s_rstin_c'left) = '0') then -- counter counts until 16 (then stays at 16)
...@@ -153,13 +153,13 @@ end process; ...@@ -153,13 +153,13 @@ end process;
--! is received and the 1st byte contains the station address. --! is received and the 1st byte contains the station address.
--!The signal reset_nFIP_and_FD stays asserted until the end of the transmission of the RP_DAT frame --!The signal reset_nFIP_and_FD stays asserted until the end of the transmission of the RP_DAT frame
--! fd_rstn_o: fieldrive reset, active low; active when a reset variable is received and the 1st --! fd_rstn_o: FIELDRIVE reset, active low; active when a reset variable is received and the 1st
--! byte contains the station address. --! byte contains the station address.
--! The signal reset_nFIP_and_FD_i stays asserted until a new variable for this station is received --! The signal reset_nFIP_and_FD_i stays asserted until a new variable for this station is received
Reset_Outputs: process (uclk_i) Reset_Outputs: process (uclk_i)
begin begin
if rising_edge(uclk_i) then if rising_edge (uclk_i) then
rston_o <= not assert_RSTON_p_i; rston_o <= not assert_RSTON_p_i;
nFIP_rst_o <= s_rst or rst_nFIP_and_FD_p_i; nFIP_rst_o <= s_rst or rst_nFIP_and_FD_p_i;
......
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