I have a card using AD9548, and I configure it from FPGA. Firstly I set reset pin to 320ns delay, then normal state.
M2:M0 set 1,1,1, then I transfer 1 0 0 1 1 1 1 0 with I2C to IIC interface.
Logic is right and I test SDA and SCL with scope, it's perfect. But I can't scope ACK signal in the ninth SCL.
What's the possible reason for the problem?