MPC875 using SCC4 together with both FECs

3 messages, 3 authors, 2006-02-07 · open the first message on its own page

MPC875 using SCC4 together with both FECs

From: dibacco@inwind.it <hidden>
Date: 2006-02-07 22:24:40

Someone knows if, in MPC875, SCC4 can be used together with the two FECs?=
 I saw that RXD4(input SCC4) shares the same GPIO with MII-TXD0 (output o=
f FEC0).

Thank you,
Antonio.

Re: MPC875 using SCC4 together with both FECs

From: Dan Malek <hidden>
Date: 2006-02-07 22:59:09

On Feb 7, 2006, at 5:24 PM, dibacco@@inwind..it wrote:
Someone knows if, in MPC875, SCC4 can be used together with the two 
FECs? I saw that RXD4(input SCC4) shares the same GPIO with MII-TXD0 
(output of FEC0).
That's a correct observation, you can't do it.  I don't remember
and don't have documentation handy, but would it work in
RMII mode?  Otherwise, you will have to step up to the MPC870.


	-- Dan

Re: MPC875 using SCC4 together with both FECs

From: Pantelis Antoniou <pantelis.antoniou@gmail.com>
Date: 2006-02-07 23:01:14

On 2/7/06, Dan Malek [off-list ref] wrote:

On Feb 7, 2006, at 5:24 PM, dibacco@@inwind..it wrote:
quoted
Someone knows if, in MPC875, SCC4 can be used together with the two
FECs? I saw that RXD4(input SCC4) shares the same GPIO with MII-TXD0
(output of FEC0).
That's a correct observation, you can't do it.  I don't remember
and don't have documentation handy, but would it work in
RMII mode?  Otherwise, you will have to step up to the MPC870.


        -- Dan

IIRC it can in RMII mode...

Don't hold me on that however, no manual and no time to look.

Pantelis
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