RE: [microblaze-uclinux] uclinux port to Multimedia board

[<Mark.Hsieh@xxxxxxxxxxxxxxxxxxx>]

Hi Didier,
opb_zbt_controller has a feature to choose the implementation of "C_EXTERNAL_DLL".
The clock path to external ZBT and a clock feedback from external load form a delay-lock-loop to syncronous the clock.
You need one for each opb_zbt_controller but the available DLLs are rare. There are 5 ZBT bank needs clock on the multimedia board.
Maybe you can choose not to  implement "C_EXTERNAL_DLL" and use DCM and BUFG to syncronous these clocks.
Maybe you can use OPB_EMC because it can handle multi-bank ZBT control.
Please check  "Xilinx OPB ZBT Controller Design Spec".
Best regards,
Mark


-----Original Message-----
From: owner-microblaze-uclinux@itee.uq.edu.au [mailto:owner-microblaze-uclinux@itee.uq.edu.au] On Behalf Of didier delacretaz
Sent: Thursday, October 28, 2004 2:11 PM
To: microblaze-uclinux@itee.uq.edu.au
Subject: Re: [microblaze-uclinux] uclinux port to Multimedia board


Hi,

Christopher John Comis wrote:
I am not too familiar with the
> opb_zbt_controller, although I am thinking, as a next step, to try 
> this peripheral instead of my zbtio core.  Have either of you managed 
> to get uClinux running with this peripheral?

I am trying to get uClinux running with this peripheral (one for each 
zbt bank), but it isn't working now, I have a lot of garbage in the 
console (strange carateres), and the system isn't responding after 
"calibrating delay loop...." perhaps an interrupt problem.

Regards,
Didier
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