in 600MP machine, customers found that 2pcs with no output of SRC4382's IO. they though it's because of IC.
the schematics is as below:
there are:
1、 1PCS IC only PIN32 spdif no output
2、1PCS IC only PIN48 BLK no output
in real test:
test PIN32, it kept as 0V
for IC whose PIN48 was damaged, broke up all the circuits which connected to BLK, text output of BCLK, waveform is as below.
it kept at 0.7VDC in most of the time, sometimes there is square wave but the amplitude is not right.
what's the cause? ESD?
thanks!
