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## Main Features
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- 4-lane PCIe (Gennum GN4124)
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- 1x Xilinx Spartan6 FPGA (XC6SLX150T-3FGG900C)
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- FMC slot with low pin count (LPC) connector
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- Vadj fixed to 2.5V
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- No dedicated clock signals from Carrier to FMC (only available
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on HPC pins)
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- LPC cheaper than HPC and also easier to mount
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- FMC connectivity: all 34 differential pairs connected, 1 GTP
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transceiver with clock, 2 clock pairs, JTAG
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- 1 Xilinx Spartan6 FPGA (XC6SLX150T-3FGG900C)
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- No dedicated clock signals from Carrier to FMC (only available
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on HPC pins)
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- Simple clocking resources
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- 1 10-280 MHz I2C Programmable XO Oscillator (Silicon Labs Si570)
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- 1 25 MHz TCXO controlled by a DAC with SPI interface (AD5662)
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- 1 20 MHz VCXO controlled by a DAC with SPI interface (AD5662)
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- 1 low-jitter frequency synthesizer (TI CDCM61004, fixed
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configuration, Fout=125MHz)
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- 1x 10-280 MHz I2C Programmable XO Oscillator (Silicon Labs
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Si570)
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- 1x 25 MHz TCXO controlled by a DAC with SPI interface (AD5662,
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used by [White Rabbit PTP
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core](https://www.ohwr.org/project/wr-cores/wikis/Wrpc-core\)))
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- 1x 20 MHz VCXO controlled by a DAC with SPI interface (AD5662,
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used by [White Rabbit PTP
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core](https://www.ohwr.org/project/wr-cores/wikis/Wrpc-core\)))
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- 1x low-jitter frequency synthesizer (TI CDCM61004, fixed
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configuration, Fout=125MHz, used by [White Rabbit PTP
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core](https://www.ohwr.org/project/wr-cores/wikis/Wrpc-core\)))
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- On board memory
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- A 2Gbit DDR3
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- 1 SPI 32Mbit flash PROM for multiboot FPGA powerup
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- 1x 2Gbit (256 MByte) DDR3 (MT41J128M16JT-125)
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- 1x SPI 32Mbit flash PROM for multiboot FPGA powerup
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configuration, storage of the FPGA firmware or of critical data
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- Miscellaneous
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- on-board thermometer IC (DS18B20U+)
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- unique 64-bit identifier (DS18B20U+)
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- Front panel containing
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- 1 Small Formfactor Pluggable (SFP) cage for fibre-optic
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transceiver
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([WhiteRabbit](https://www.ohwr.org/project/white-rabbit)
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support)
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- Programmable LED
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- 1x Small Formfactor Pluggable (SFP) cage for fibre-optic
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transceiver ([WhiteRabbit
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support](https://www.ohwr.org/project/white-rabbit)). 1.25 and
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2.5 Gbps.
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- Programmable Red and Green LEDs
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- FMC front panel
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- Internal connectors
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- 1 JTAG header for Xilinx programming during debugging
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- 1 mini USB AB (USB-UART bridge)
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- 1x JTAG header for Xilinx programming during debugging
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- 1x mini USB AB (USB-UART bridge)
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- FPGA configuration. The FPGA can optionally be programmed from:
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- GN4124 SPRIO interface (loaded by software driver at startup)
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- JTAG header
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... | ... | @@ -107,13 +115,15 @@ Latin. |
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- [Design Information](DesignInfo)
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- [Software](Software)
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- [Users](Users)
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- [Frequently Asked
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Questions](FAQ)
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- [Frequently Asked Questions](FAQ)
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-----
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## Releases
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- Hardware: [SPEXI
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V1](https://www.ohwr.org/project/spexi/wikis/documents)
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-----
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## Contacts
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