It is not possible to read or write the ULPI PHY extended register set (addresses 0x40 and greater) using the ULPI viewport. The write operation writes the address itself as data, and a read operation returns incorrect data.
| Impact: | Minor. A controller lock-up is not expected. The PHY registers that are affected and cannot be read through the ULPI Viewport are only the Reserved (0x40 to 0x7F) and Vendor-specific (0x80 to 0xFF) registers. |
Work-around: |
There is no work-around at this time. |
Configurations Affected: |
Systems that use the USB controller. |
| Device Revision(s) Affected: | All, no plan to fix. Refer to (Xilinx Answer 47916) - Zynq-7000 Design Advisory Master Answer Record. |
| AR# 47543 | |
|---|---|
| Date | 08/23/2012 |
| Status | Active |
| Type | Design Advisory |
| Devices |
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