Re: [microblaze-uclinux] Broadcom 5461

[aurash <aurelian.lazarut@xxxxxxxxxxx>]

Hi John,

Drop an email to Insight they should have the datasheet (otherwise how 
they been able to design the PCB right?)

Aurash

John Williams wrote:

> Hi folks,
>
> The latest batch of Insight V2MB1000 boards that we received shipped 
> with Version2 of the P160 Comms module - one of the differences from 
> the original is the change to a broadcom 5461 10/100/1000 ethernet 
> transeiver.
>
> According the Insight's documentation, the only change required to use 
> this new device with existing designs (at 10/100) is to swap a pair of 
> pins, but I've tried this and it seems there's more to it than that.  
> I resurrected my old phy_test program that dumps the MII registers, 
> and I get 0xFFFFFFFF values for all registers, which is clearly 
> wrong.  So, somehow, the MII channel between the Xilinx emac core, and 
> the BCM5461, is broken.
>
> I suspect I need to force the 5461 into a 10/100 MII mode, rather than 
> the GMII that is used for GigEthernet.  Unfortunately, in their wisdom 
> Broadcom don't seem to make available the datasheet for this part.
>
> Before I spend too much time on this, has anyone had any success 
> getting this new P160 comms board going with the Xilinx ethernet MAC, 
> and/or the standard mbvanilla platform?
>
> Thanks,
>
> John
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