AnsweredAssumed Answered

AD9548 I2C no ack

Question asked by Guan on Apr 23, 2014
Latest reply on Apr 30, 2014 by Guan

Hi, all,

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?

 

Best regards.

 

Guan

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