AnsweredAssumed Answered

ADAU1761 I2C access problem

Question asked by manuelkw on Sep 3, 2015
Latest reply on Sep 9, 2015 by manuelkw



I tried the ADAU1761 EV Board with the USBi and it is working fine, however, when I tried to control the EVB via I2C by another simple 8-bit MCU, I have a problem, please see the picture, seems the I2C cycle cannot work to get the ACK bit from the DSP.


Interface voltage is 3.3V. I sent a RESET pulse to the board before starting the I2C command cycle. It cannot work even at the 1st cycle... no ACK read.


Any clue?




thanks & regards,