Test Report for ADSP-21469 connect Issue
Now I am designing ADSP-21469 for one applications. I have ever tested ADSP-21469 engineer sample in target board . Recently I got 5pcs ADSP-21469 samples . But I found the new silicon ADSP-21469 can’t connect with ADZS-HPUSB-ICE by VisualDSP++5.0 ( update 7 and 8) tool.
- Test Report:
Below is the further detail test issue .
- Connect ADZS-HPUSB-ICE to customer’s target board.
- Test ADZS-HPUSB-ICE tool – OK
- Connect section of ADSP-21469 -- failure
- Then discuss with ADI engineer for this issue, below is test result
a) Change JTAG connect solution with old and new schematic from old and new eval board schematic ;
b) Clock test : 25Mhz is ok ;
c) Power supplies : 3.3V, 1.8V, 1.2V are OK ;
i. Test is similar with datasheet timing ;
d) Switch boot mode of FlashRom to SPI boot to connect JTAG ;
i. Not work ;
e) System clock test of DDR ;
i. No output;
f) After power on, test DDR clock under internal Rom boot ;
i. Can’t find clock output under boot mode setup ( 011)
ii. ADSP-21469 eng has clk of DDR output
g) Reset test ;
i. We can find the good reset signal
h) Test the chip ;
i. Not hot , I think this part is not work ;
So I don't what I wrong ?