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ADV7393 readback

Question asked by harryh Employee on Dec 16, 2013
Latest reply on Dec 16, 2013 by GuenterL


We are having issues on reading

this device. All the other parts on the board(2 other I2C parts,

not the same I2c address)) work except this one.

We have been on this for days. I have attached a scope plot

that shows the read setup (ALSB=gnd so address =54&55)

write 54, data 1 and Read 55 and we get a nak on the read. we have

tried to read various different registers to no avail.

the I2C speed is about 90Khz.