SLOS948 February 2019 TAS6424M-Q1
The PWM converts the PCM input data into a switched signal of varying duty cycle. The PWM modulator is an advanced design with high bandwidth, low noise, low distortion, and excellent stability. The output switching rate is synchronous to the serial audio-clock input and is programmed through I2C to be between 8× and 48× the input-sample rate. The option to switch at high frequency allows the use of smaller and lower cost external filtering components. Table 3 lists the switch frequency options for bits 4 through 6 in the Miscellaneous Control 2 Register (address 0x02).
|INPUT SAMPLE RATE||BIT 6:4 SETTINGS|
|000||001||010 to 100||101||110||111|
|44.1 kHz||352.8 kHz||441 kHz||RESERVED||1.68 MHz||1.94 MHz||2.12 MHz|
|48 kHz||384 kHz||480 kHz||RESERVED||1.82 MHz||2.11 MHz||Not supported|
|96 kHz||384 kHz||480 kHz||RESERVED||1.82 MHz||2.11 MHz||Not supported|