The fmc-dio-5chttla 5-channel digital I/O module is a simple board for
digital I/O on LEMO connectors.
It has been designed for testing White Rabbit functionality as part of
the SPEC Demonstration Package for White Rabbit
and it can be used for other general purpose applications
5 input/output ports with independently programmable direction (Lemo
Output levels: LVTTL, capable of driving +2.5 V over a 50-Ohm load.
At power-up the outputs are in Hi-Z state.
Input levels: any logic standard from Vih = 1 V to Vih = 5 V
(threshold programmable for each input independently).
Output Rise/fall times: max. 2 ns.
I/O bandwidth: 200 MHz.
Programmable 50-Ohm input termination in each channel.
LVDS I/O on the carrier side.
One of the inputs is capable of driving a global clock net in the
Inputs and outputs protected against +15V pulses with a pulse width
of up to 10us @ 50Hz.
NOTE:This board (up to v2.0) uses EEPROM that is not compatible with VITA 57.1 standard and thus carriers might have difficulties reading configuration from it, see issue #1 and detailed explanation.