topic PQII/ PQIII Flash Programmer in PowerQUICC Processors

PQII/ PQIII Flash Programmer

alexander_yakov — Fri, 18 Mar 2016 06:43:52 GMT

(please see previous thread for history - PQII/ PQIII Flash Programmer )

Sorry, we do not offer JTAG/COP interface specification to customers, so you can not implement your own flash programmer for PQ2/PQ3 devices using internal debugging interface of PQ2/PQ3 device.

The only thing I can offer here is implement flash programming via standard JTAG commands, i.e. place PQ2/PQ3 device to JTAG boundary scan mode and program external flash, connected to PQ2/PQ3 device by "bit-banging" on PQ2/PQ3 pins using JTAG boundary scan commands. In this case the processor itself will be in reset mode, so you do not need PQ2/PQ3 debug interface description.

Re: PQII/ PQIII Flash Programmer

dijo — Wed, 23 Mar 2016 11:46:46 GMT

Thanks Alexander.

Do you know of any example/ Primer/ Application Note which gives details of the same?

i.e. "bit-banging" on PQ2/PQ3 pins using JTAG boundary scan commands..

Thanks in advance.

Re: PQII/ PQIII Flash Programmer

alexander_yakov — Wed, 23 Mar 2016 14:39:24 GMT

No, I do not think we have an example ready to share, but I do not expect it will be difficult for you to implement this by yourself, because you previously indicated you have skills to implement a debugger over the same interface.

Have a great day,
Alexander

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