I have a strange problem. There are tree IIC devices on my board. By IIC I can access them very well except ADV7611.
I do not know why. I make the IIC'wave like UG-180 P175. But fristly, if i write the IO 0xF4 0x80, the result is Nack, and write others registers the result is ack. Secondly, I can not read any registers. If i read , the result is also Nack.
See below .Thanks you
1. This is a normal wave. Write 98(IO) F9 64
2.This is a error write wave. Write 98(IO) FF 80 The result is Nack
3. This is a error read wave read 0x64(ksv module) 0x77
Fristly we write 0x64 and 0x77
Secondly we send 0x64 But the result is Nack