IDMA of ADSP-2187

Started by Eric Chan December 19, 2000
Hello, All,
I want design with the IDMA interface of ADSP-2187, my circuit send out
the signals to ADSP, the waveform is just be same as the data sheet. I
hope I can write/read the PM and DM. But:
After power on, no matter what I write to DM/PM, then I try to read
back the data I write to DM/PM, the return data is not the data I write
to, and any location of PM/DM I read out is the same error data. The
return data does not change even when I try to reset the DSP chip, it
change only when I turn the power of DSP chip off then on.
Is there anybody ever meet such a strange thing?

Eric Chan <