XHRA-2HPA-TQ64 doesn't load unique configuration data at 0x80000 addr

Technical discussions around xCORE processors (e.g. General Purpose (L/G), xCORE-USB, xCORE-Analog, xCORE-XA).
K_Audio
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Re: XHRA-2HPA-TQ64 doesn't load unique configuration data at 0x80000 addr

Postby K_Audio » Wed Dec 13, 2017 3:07 am

Could it be that the Read JEDEC ID command is not executed by the OTP code?
We know that the OTP code will (successfully) read a large chunk of data from the flash.
Perhaps that code is executed and it tries to read the remainder of the data from the flash.
Consider that after a period of inactivity following that first read, all subsequent reads from the flash happen at a much higher clock rate.
Also consider that the USB will enumerate.

Thank you very much kyeongjinjang for your effort.
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mon2
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Postby mon2 » Wed Dec 13, 2017 3:34 am

From XMOS support...
Hi Kumar,

It looks like you've done quite some due diligence! What you uncovered is true -- the chip itself does a check on the SPI flash before it boots up. Failure to use a SPI flash on the recommended list will cause the chip to not operate. Internally we've done some investigation to see if we can create a workaround to salvage the chip, but it looks like that did not pan out, hence the EOL notice.


Not clear at this time on the details of the EOL status for the XRHA-2HPA-TQ64 but another developer has received the same comment from factory. Suppose that if the source code for this IP is available, then the code can be planted into the pin compatible replacement (XCORE-200 series) using a more current list of flash IDs.

Does anyone have the source code / project for this IP? Thought it was encrypted.
Lucas
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Postby Lucas » Fri Dec 15, 2017 3:48 pm

mon2 wrote:From XMOS support...

Not clear at this time on the details of the EOL status for the XRHA-2HPA-TQ64 but another developer has received the same comment from factory. Suppose that if the source code for this IP is available, then the code can be planted into the pin compatible replacement (XCORE-200 series) using a more current list of flash IDs.

Does anyone have the source code / project for this IP? Thought it was encrypted.


Wait,just to clarify - developers are now receiving EOL notifications for XRHA-2HPA-TQ64?
Lucas
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Postby Lucas » Wed Jan 03, 2018 3:39 pm


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