PQII/ PQIII Flash Programmer

[dijo]

We would like to make a Flash Programmer for PQ2/PQ3 based boards, fully hosted on a SBC (Raspberry Pi, Beagle Board/ etc.). This is to make it easy to for the Lab and Field people to recover boards where Flash has been corrupted.

How do we start about this? Where do we get the supported JTAG / cmd specifications supported by PQ2/3?

Thanks.

[alexander_yakov]

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.

Have a great day,
Alexander

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