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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Manish Joshi <mjoshi_blr <at> yahoo.com> writes:
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
Yahoo! for GoodClick here to donate to the Hurricane
Katrina relief effort.
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Hi Manesh,
Do you by chance have the linux driver you can share for implementing MCC
driver for MPC 8270. I am trying to implement a driver for enabling the
MCC on MPC 8250 and will be great to have a reference code.
Regards,
Solan