CS53L21 datasheet(42/66 Pages) CIRRUS

42 / 66 page

DS700PP1

CS53L21

Speed Mode (SPEED[1:0])

Default: 01

11 - Quarter-Speed Mode (QSM) - 4 to 12.5 kHz sample rates

10 - Half-Speed Mode (HSM) - 12.5 to 25 kHz sample rates

01 - Single-Speed Mode (SSM) - 4 to 50 kHz sample rates

00 - Double-Speed Mode (DSM) - 50 to 100 kHz sample rates

Function:

Sets the appropriate speed mode for the A/D in Master or Slave Mode. QSM is optimized for 8 kHz sample

rate and HSM is optimized for 16 kHz sample rate. These bits are ignored when the AUTO bit is enabled

(see Auto-Detect Speed Mode (AUTO) above).

Tri-State Serial Port Interface (3ST_SP)

Default: 0

0 - Disable

1 - Enable

Function:

When enabled and the device is configured as a master, all serial port outputs (clocks and data) are placed

in a high impedance state. If the serial port is configured as a slave, only the SDOUT pin will be placed in a

high-impedance state. The other signals will remain as inputs.

Power Down MIC X (PDN_MICX)

Default: 1

0 - Disable

1 - Enable

Function:

When enabled, the microphone pre-amplifier for channel x will be in a power-down state.

Power Down MIC BIAS (PDN_MICBIAS)

Default: 1

0 - Disable

1 - Enable

Function:

When enabled, the microphone bias circuit will be in a power-down state.

MCLK Divide By 2 (MCLKDIV2)

Default: 0

0 - Disabled

1 - Divide by 2

Function:

Divides the input MCLK by 2 prior to all internal circuitry. This bit is ignored when the AUTO bit is disabled

in Slave Mode.

CS53L21 Datasheet(PDF) 42 Page - Cirrus Logic