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IBERT and Microblaze ?
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05-06-2012 06:20 AM
Has anyone in the community tried generating an ISE project with both a Core Generator IBERT core and an EDK Microblaze system? I'm trying to optimize a Marvell PHY link on a custom board. The IBERT alone works well with near-side loopback enabled. In order to enable loopback in the Marvell PHY, I need to write an MDIO register. I added a simple EDK project alongside the IBERT that includes a Microblaze, some memory, and an lltemac instance. The LLTEMAC instance's MDIO and Phy reset ports are wired to the PHY. The rest of the GMII interface is left floating / grounded.
If I comment out the EDK system in my top-level, the IBERT works with near-side loopback. If I uncomment the EDK system, the Microblaze source executes and I can read/write the MDIO registers. However, the IBERT console in Chipscope can't seem to communicate with the IBERT core.
Is this because my Boundary Scan chain is broken, since I have an MDM and an ICON in my system?
EM Photonics, Inc.
Re: IBERT and Microblaze ?
[ Edited ]
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05-06-2012 06:36 AM - edited 05-06-2012 06:44 AM
I tried implementing my system with an MDM in the EDK. I see the same behavior.
The IBERT console seems unresponsive. When I change some of the parameters, for instance the TX termination voltage, the drop-down seems to be stuck on FLOAT no matter what I select.
The TX PLL and RX PLL are always Unlocked.
EM Photonics, Inc.
Re: IBERT and Microblaze ?
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12-01-2012 01:41 PM
Hi pcurt
I am wondering if you have manage to resolve that issue
I am trying something similar and wondering if it is fundamentally possible
Thnaks in advance











