CS42436 datasheet(9/66 Pages) CIRRUS

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DS647PP2

PIN DESCRIPTIONS - HARDWARE MODE

Pin Name

Pin Description

AIN5_MUX

AIN6_MUX

Analog Input Multiplexer

(Input) - Allows selection between the A and B single-ended inputs of

ADC3. See sections 7.6.7 and 7.6.8 for details.

MFREQ

MCLK Frequency (Input) - Sets the required frequency range of the input Master Clock. See sec-

tion 5.4 for the appropriate settings.

ADC3_HPF

ADC3 High-Pass Filter Freeze (Input) - When this pin is driven high, the internal high-pass filter

will be disabled for ADC3.The current DC offset value will be frozen and continue to be subtracted

from the conversion result. See “ADC Digital Filter Characteristics” on page 16.

RST

Reset (Input) - The device enters a low power mode and all internal registers are reset to their

default settings when low.

VLC

Control Port Power (Input) - Determines the required signal level for the control port interface.

See “Digital I/O Pin Characteristics” on page 7.

Frame Sync (Input) - Signals the start of a new TDM frame in the TDM digital interface format.

Digital Power (Input) - Positive power supply for the digital section.

VLS

Serial Port Interface Power (Input) - Determines the required signal level for the serial port inter-

faces.

SCLK

Serial Clock (Input) - Serial clock for the serial audio interface. Input frequency must be 256xFs.

ADC_SDOUT/

ADC3_SINGLE

Serial Audio Data Output (Output) - TDM output for two’s complement serial audio data. Start-up

Option for Hardware Mode: Pull-up to VLS enables Single-Ended Mode for AIN5-AIN6.

DAC_SDIN

DAC Serial Audio Data Input (Input) - Input for two’s complement serial audio data.

AUX_LRCK

Auxiliary Left/Right Clock (Output) - Determines which channel, Left or Right, is currently active

on the Auxiliary serial audio data line.

AIN5_MUX

14 15 16 17 18 19 20 21 2 2 23 24 25

52 51 50 49 48 47 46 45 4 4 43 42 41

VLS

MCLK

VLC

ADC3_HPF

N.C.

AOUT5+

AGND

ADC_SDOUT/

ADC3_SINGLE

MFREQ

RST

AOUT6+

DGND

SCLK

AOUT6-

AIN6_MUX

AOUT5-

N.C.

AIN1+

AIN1-

CS42436

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