Other Parts Discussed in Thread: TLV320ADC3101
Hi,
I am using the TLV320AIC3101 on a project and am running into some issues configuring it. I am monitoring the I2C bus to confirm that the write commands are being sent as expected, and reading back the register value after each write to confirm it successfully was programmed.
I am noticing that I can successfully write to some of these registers (read value = write value), while I cannot successfully write to others (read value = 0x00 regardless of write value).
Could you please take a look at the registers below that I am having success and failure with and let me know if these registers have specific dependencies or rules that I need to adhere to? Or certain power states that need to be configured prior to attempting a write?
Any support would be greatly appreciated.
-Armen
Registers I can write to successfully:
Page 0
0x08 - Register 8 - Audio Serial Data Interface Control Register A
0x51 - Register 81 - ADC Digital
0x52 - Register 82 - ADC Fine Volume Control
Page 1
0x33 - Register 51 - MICBIAS Control
0x34 - Register 52 - Left ADC Input Selection for Left PGA
0x36 - Register 54 - Left ADC Input Selection for Left PGA
0x37 - Register 55 - Right ADC Input Selection for Right PGA
0x39 - Register 57 - Right ADC Input Selection for Right PGA
0x3B - Register 59 - Left Analog PGA Settings
0x3C - Register 60 - Right Analog PGA Settings
Registers I cannot write to:
Page 0
0x02 - Register 2 - Codec Sample Rate Select Register (This one is particularly odd, because it reads back 0x20 regardless of what I try to write to it, which should be invalid value altogether since the first 4 and last 4 bits must be equivalent in this register per the data sheet)
0x09 - Register 9 - Audio Serial Data Interface Control Register B
0x65 - Register 101 - Clock Register
0x66 - Register 102 - Clock Generation Control Register
0x03 - Register 3 - PLL Programming Register A
0x04 - Register 4 - PLL Programming Register B
0x0B - Register 11 - Audio Codec Overflow Flag Register
0x53 - Register 83 - Left ADC Volume Control
0x54 - Register 84 - Right ADC Volume Control
