xs1-l1 network topology booting...

Technical discussions around xCORE processors (e.g. General Purpose (L/G), xCORE-USB, xCORE-Analog, xCORE-XA).
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xs1-l1 network topology booting...

Postby boeserbaer » Mon Apr 05, 2010 6:32 am

I am working on the design of a network of L1 -128 processors. what I have n mind is 1 processor more or less as a switch, 3 links going outbound to strings of L1s, 1 link inbound to another L1 set up to communicate with the host over ethernet, or possibly the same but with yet another L1 with sdram connected as a fifo between the ethernet L1 and the network.

My questions are:
1. How to configure the JTAG strings. I presume I can just connect TDO from string 0 to TDI for string 1 if present, much like XK-1 kits.

2. What happens when I try to start, and different boards on the network are not yet configured, perhaps power has not come on yet for the off board processors (using LVDS connections off board)

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Postby RemoRitzmann » Mon Apr 05, 2010 6:31 pm

Hello Mike, i have more or less the same question as your first.
Thomas Gmeinder from XMOS provided me with this drawing:


It's not yet working with mine four XC-2 Boards. But I started a Topic, you might be interested in:

Regards, Remo
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