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DS90UB913Q/DS90UB914Q BIST inject errors

Francis De Paemeleere
Prodigy 10 points

Hi,

I can enable BIST mode on the DS90UB914Q  (I think), but to be sure, I should be able to inject some errors during the test.

How can that be done.

steps to put DS90UB914Q into BIST:

write 0x24 = 0x6 (selecting 25MH in 10bit mode)

write 0x24 = 0x7 (enable bist)

read 0x25 (number of errors, always stays one at this moment)

write 0x24 = 0x60 (diable bist again)

Thanks in advance

  • 0
    TI__Genius 13475 points

    The BIST generator does not have the capability to inject errors itself into the forward channel of the device.  There is the ability to force backchannel errors with register 0x42.

    By increasing the clock frequency, the device will eventually start generating errors.