CS42428 datasheet(16/73 Pages) CIRRUS

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DS605F1

CS42428

2. PIN DESCRIPTIONS

Pin Name

Pin Description

DAC_SDIN1

DAC_SDIN2

DAC_SDIN3

DAC_SDIN4

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

DAC_SCLK

DAC Serial Clock (Input/Output) - Serial clock for the DAC serial audio interface.

DAC_LRCK

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

the DAC serial audio data line.

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

DGND

Digital Ground (Input) - Ground reference. Should be connected to digital ground.

VLC

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

SCL/CCLK

Serial Control Port Clock (Input) - Serial clock for the serial control port. Requires an external pull-up

resistor to the logic interface voltage in I²C mode as shown in the Typical Connection Diagram.

SDA/CDOUT

Serial Control Data (Input/Output) - SDA is a data I/O line in I²C mode and requires an external pull-up

resistor to the logic interface voltage, as shown in the Typical Connection Diagram. CDOUT is the output

data line for the control port interface in SPI mode.

AD1/CDIN

Address Bit 1 (I²C)/Serial Control Data (SPI) (Input) - AD1 is a chip address pin in I²C mode; CDIN is

the input data line for the control port interface in SPI mode.

AD0/CS

Address Bit 0 (I²C)/Control Port Chip Select (SPI) (Input) - AD0 is a chip address pin in I²C mode; CS

is the chip select signal in SPI mode.

INT

Interrupt (Output) - The CS42428 will generate an interrupt condition as per the Interrupt Mask register.

See “Interrupts” on page 37 for more details.

17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32

63 62 61 60 59 58 57 56 55 54 53 52 51 50 49

DAC_SDIN1

DG ND

VLC

SCL/CCLK

SDA/CDOUT

AD1/CDIN

AD0/CS

INT

RST

AINR-

AINR+

AINL+

AINL-

AOUTA2-

AO UTB1-

AO UTB1+

AO UTA1+

AOUTA1-

MUTEC

AGND

GPO7

GPO6

GPO5

GPO4

GPO3

GPO2

GPO1

LPFLT

DAC_LRCK

DAC_SCLK

CS42428

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