V2Pro Rocket IO Primitive- Parameter and Port Settings

[Adarsh Kumar Jain]

Hi,
I am trying to use the Rocket IO transceiver as a receiver only (no clock
correction, no channel bonding, no CRC). I do need to do 8b/10b decoding.
Looking at the macro available, and from the Transceiver User Guide, there
are so many parameters and ports which need to be configured. I am new to
the Transceiver Designs and hence am not able to make out what all I need to
do.
I tried to do a simulation of a very basic design using these RocketIOs but
all i get out is XXXXs.
I am using ISE6.1SP3 and Active HDL 6.1 SP2
Any help will be appreciated.
Thanks in advance,
Adarsh

 

[Martin Kellermann]

Hello Adarsh,

as you're new to designing with the Rocket-IOs I see why you're
overwhelmed by all the attributes (I'm still 8o)...).
The easiest way to get around all this is to use the Architecture Wizard
(arwz.exe) that comes with the ISE-software. In this you can
relatively easily specify what you want and you get a instantiation of
your transceiver.

As you're using Active-HDL I assume you only need VHDL instead of some
binary file which is generated by the Wizard. So after running the
wizard and getting the *.xaw-file let the tools generate the
instantiation template and you'll get the VHDL you can instantiate into
your bigger design.

One thing you need to be aware: even though you're only using the
transceiver as an input you still need to feed the TX-pins to the
top-level. This means that you need to put "data" onto the internal
parallel TX-data-pins at the MGT (can all be 0s).

Also be aware that you need to supply all five clocks, even the two
TX-clocks as some of the logic needed on the RX-side is clocked by
TXUSRCLK and TXUSRCLK2. But you can just use RXUSRCLK(2) for those.

Hope that helps.

Cheers,

Martin

Adarsh Kumar Jain wrote:

Hi,
I am trying to use the Rocket IO transceiver as a receiver only (no clock
correction, no channel bonding, no CRC). I do need to do 8b/10b decoding.
Looking at the macro available, and from the Transceiver User Guide, there
are so many parameters and ports which need to be configured. I am new to
the Transceiver Designs and hence am not able to make out what all I need to
do.
I tried to do a simulation of a very basic design using these RocketIOs but
all i get out is XXXXs.
I am using ISE6.1SP3 and Active HDL 6.1 SP2
Any help will be appreciated.
Thanks in advance,
Adarsh