From: Manish Joshi <mjoshi_blr@yahoo.com>
To: linuxppc-embedded@ozlabs.org
Subject: MPC 8260/70 MCC SI Clocking and TSA Sync
Date: Mon, 3 Oct 2005 09:54:35 -0700 (PDT) [thread overview]
Message-ID: <20051003165435.70417.qmail@web34701.mail.mud.yahoo.com> (raw)
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Hi,
I am trying to bring up MCC (Multi Channel Communication controller) on MPC8270 board for T1/E1.
The overall configuration looks fine since I am able to have a communication properly if I do a T1 Cross over Loopback and tx/rx HDLC data.
The things do not work smoothly if I connect my T1 line with an external device and start HDLC.
I am seeing 'NO' (Rx Non-Octet Alligned Frame) errors in my rx buffers. Sometimes I also see Rx abort errors.
I do not see this issue on the tx side i.e the external device does not report any of these when I tx HDLC data to it.
Does anybody have any experience dealing with this ?
As far as clocking and sync with TSA is concerned, I have just configured
CMXSI2CR register with 0x00 ( I have only TDM2A driven by CLK1) and nothing else.
Do I need to do something more for clocking etc? Also I am doing this before SI initialisation.
I will also try doing it just after TDM init and see if it helps.
Please help.
Thanks,
-Manish
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next reply other threads:[~2005-10-03 17:01 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-10-03 16:54 Manish Joshi [this message]
2013-04-12 20:55 ` MPC 8260/70 MCC SI Clocking and TSA Sync Solan
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