I'm using the TAS5414A with a circuit identical to the typical application schematic provided in the datasheet. It's being powered by a 12V DC source.
I2C Fault Register 1(0x00) returns 0x30 and External status register 1(0x04) returns 0xc0. Both seem to indicate a AVDD undervoltage and Charge-pump undervoltage scenario. Voltage at the CP pin is 12.57V while the voltage at the A_BYP pin is 0.11V. I believe AVDD is generated internally, so is this a fault with the IC? Is there some documentation I can read to further diagnose and fix this issue if possible?
A_BYP and D_BYP both have 100nF capacitors to GND. CP is connected to PVDD with a 1uF capacitor in between and CPC_TOP and CPC_BOT also have a 1uF capacitor in between.
Voltage at other relevant pins:
PVDD - 12.94V
CP - 12.57V
CPC_TOP - 12.51V
CPC_BOT - 0.11V
D_BYP - 3.44V
A_BYP - 0.11V
Thanks,
Bharath