So I'm wanting to use a couple of XMOS chips to implement a low-latency reasonable-bandwidth link between a computer system and a bus-expansion for said computer system. Basically I don't want a 40-way IDC cable between the two so the goal is to use a 2-way link.
So, assuming:
- I use Cat5/Cat5e/Cat6 wiring - is there likely to be any difference, btw ?
- I use differential signaling (eg: DS90LV049TMTX)
- I implement some transport-level error checking (similar to AN01024)
- I keep the network cable reasonably short (a couple of meters, tops)
Is there a tried-and-tested circuit anywhere ? I can't find one if so. I'm not sure if I ought to be putting series resistors into the uplink path (similar to the XTAG interface). I see there is a board being used by XMOS (figure 4 in AN01024) and those boards definitely look as though they have more than just a straight-through connection...
Is it possible to get hold of the circuit diagram for the board in the application-note ?