Hi,
Customer report below issue of TCA9554. Please help comment. Thanks!
1:Register 0x01,0x03 default value be read out is 0x00,not 0xff
2:Write value 0xff to register 0x01,But the data be read out is 0x4a(not 0xff) and the IO status also is 0x4a
3:I2C clock is 100Khz,Device addr is 0x20!
regards
david