RocketIO evaluation

[Timothy Campbell]

I was wondering if anyone has a reference design I could peak at. I just
need something simple to demonstrate a working RocketIO with a XC2VP50
chip and the Virtex-II Pro FF1152 PROTO Board. As of right now, our
design evaluates the gt_custom block and was configured using the
architecture wizard. We have supplied the block with the five correct
input clocks as specified (with REFCLK running and 50MHZ). We also set
the parameter TXINHIBIT to high, which should cause TXP = 0 and TXN = 1,
but both seem to be at ground.

Any help, suggestions or simple reference designs would be greatly
appreciated.

Best Regards,
T. Justin Campbell

 

[Adarsh Kumar Jain]

I just finished a small design which uses the Rocket IO as a transceiver
only.
I use the GT_ETHERNET macro for a 2 byte data path.the device is a V2P7
Are you getting the DCM (which i am assuming you are using to generate your
clks) to lock ?
simulation is tricky ..you have to provided the TXRESET and RXRESET after
the DCM has locked.
And u have to run the simulation for a good length of time before things
settle down.
I use Active HDL for my simulations and XST for synthesis.
I can send you a copy of verilog file if you think it will be useful.
let me know ...also it will be great if you can mention other issues u see
with it, as I am also new to RIOs.
good luck,
adarsh

"Timothy Campbell" <tcampbel@uvm.edu> wrote in message
news:bujtos$gq6$1@news.btv.ibm.com...

I was wondering if anyone has a reference design I could peak at. I just
need something simple to demonstrate a working RocketIO with a XC2VP50
chip and the Virtex-II Pro FF1152 PROTO Board. As of right now, our
design evaluates the gt_custom block and was configured using the
architecture wizard. We have supplied the block with the five correct
input clocks as specified (with REFCLK running and 50MHZ). We also set
the parameter TXINHIBIT to high, which should cause TXP = 0 and TXN = 1,
but both seem to be at ground.

Any help, suggestions or simple reference designs would be greatly
appreciated.

Best Regards,
T. Justin Campbell

 

[Adarsh Kumar Jain]

sorry...i mean i use the rocket IO as receiver only

 

[Hal Murray]

sorry...i mean i use the rocket IO as receiver only

If you are going to receive something, something else has to
transmit it. The simplest transmitter you are going to find
is probably on the board you already have.

You may have to build a loop-back connector.

Anyway, I suggest looking for a self-test setup rather than just
something to test the receiver.

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