PowerQUICC ProcessorsのトピックFlash Programming error

Flash Programming error

samyukta_s — Mon, 17 Jun 2019 10:29:49 GMT

Hi,

I am working on a Board which has MPC8360 Power PC. I am not able to program the flash which is interfaced to the Power PC. When monitored the LWE (write enable) signal we are getting high, where as in other working boards its pulsing. May i know how to rectify this?

Thanks,

Samyukta

Re: Flash Programming error

ufedor — Mon, 17 Jun 2019 16:01:23 GMT

1) Was the board checked for a manufacturing/soldering issue?

2) Is the flash chip-select pulsed?

3) Is the LWE probed directly on the processor's pin?

Re: Flash Programming error

samyukta_s — Tue, 18 Jun 2019 05:36:41 GMT

Dear Sir,

1) Was the board checked for a manufacturing/soldering issue?

Yes, its checked.

2) Is the flash chip-select pulsed?

yes , its pulsing. We have replaced the board with new flash IC.

3) Is the LWE probed directly on the processor's pin?

The processor pin is interfaced with a resistor(33 ohm) to the flash. We probed at the resistor end.

Re: Flash Programming error

ufedor — Tue, 18 Jun 2019 07:22:12 GMT

4) Please use a debugger, execute write operation to the Flash LBC memory bank (chip-select) and check the LWE0 behaviour.

Re: Flash Programming error

samyukta_s — Tue, 18 Jun 2019 09:43:19 GMT

Dear Sir,

4) Please use a debugger, execute write operation to the Flash LBC memory bank (chip-select) and check the LWE0 behaviour.

We checked it LWE0 is always high, whereas in other working boards its pulsing.

Thanks & Regards,

Samyukta Sudheendra

E-1181

Systems Engineer

Communications (Radio Relay)

ALPHA DESIGN TECHNOLOGIES PVT LTD

No. 271, 6th Main, Defence Colony 100ft Road, Indira Nagar, Bangalore - 560 038, India

Tel: +91-80-4255 6506| Fax: +91-80-4255 6523| Mob: +91 9901782861| Email: samyukta.s@adtl.co.in<mailto:amitmishra@adtl.co.in>

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Re: Flash Programming error

ufedor — Tue, 18 Jun 2019 10:30:15 GMT

Please use a debugger to ensure that settings of LBC registers are identical on operational and problem boards.

If the LBC settings are identical, please perform the ABA swap - i.e. interchange processors between operational and problem boards.

Re: Flash Programming error

samyukta_s — Wed, 19 Jun 2019 04:58:18 GMT

Dear Sir,

The LBC registers are identical for operational and problem boards.

With Regards,

Samyukta

Re: Flash Programming error

ufedor — Wed, 19 Jun 2019 05:25:32 GMT

Please perform the ABA swap - i.e. interchange processors between operational and problem boards.

Re: Flash Programming error

samyukta_s — Mon, 22 Jul 2019 10:51:29 GMT

Dear Sir,

We have replaced the processor with new IC. Even after the replacement, there is no improvement.

Please guide.

With Regards,

Samyukta

Re: Flash Programming error

ufedor — Mon, 22 Jul 2019 14:24:26 GMT

Please check that RCW is supplied correctly and is the same as on operational boards.

You wrote:

> The processor pin is interfaced with a resistor(33 ohm) to the flash.

What are measured levels when the resistor is removed?