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CS4398CZZR

120 dB, 192 kHz Multi-Bit DAC with Volume Control

Cirrus Logic 

CS4398

Pin Name Pin #

Pin Description

DSD_A

DSD_B

DSD_SCLK

SDIN

SCLK

LRCK

MCLK

28

1

Direct Stream Digital Input (Input) - Input for Direct Stream Digital serial audio data.

2 DSD Serial Clock (Input) - Serial clock for the Direct Stream Digital audio interface.

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

4 Serial Clock (Input) - Serial clock for the serial audio interface.

5

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

the serial audio data line.

6 Master Clock (Input) - Clock source for the delta-sigma modulator and digital filters.

VD

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

DGND

8 Digital Ground (Input) - Ground reference for the digital section.

RST

VLC

FILT+

REF_GND

VREF

BMUTEC

AMUTEC

13 Reset (Input) - The device enters system reset when enabled.

14 Control Port Power (Input) - Positive power for Control Port I/O.

15

Positive Voltage Reference (Output) - Positive reference voltage for the internal sam-

pling circuits.

16 Reference Ground (Input) - Ground reference for the internal sampling circuits.

17 Voltage Reference (Input) - Positive voltage reference for the internal sampling circuits.

18

25

Mute Control (Output) - The Mute Control pin is active during power-up initialization, mut-

ing, power-down or if the master clock to left/right clock frequency ratio is incorrect. During

reset, these outputs are set to a high impedance.

AOUTB+

AOUTB-

AGND

VA

AOUTA+

AOUTA-

VQ

20 Differential Right Channel Analog Output (Output) - The full-scale differential analog

19 output level is specified in the Analog Characteristics specification table.

21 Analog Ground (Input) - Ground reference for the analog section.

22 Analog Power (Input) - Positive power for the analog section.

23 Differential Left Channel Analog Output (Output) - The full-scale differential analog out-

24 put level is specified in the Analog Characteristics specification table.

26 Quiescent Voltage (Output) - Filter connection for internal quiescent voltage.

VLS

27 Serial Audio Interface Power (Input) - Positive power for serial audio interface I/O.

Stand-Alone Mode Definitions

M3

9

M2

M1

10

11

Mode Selection (Input) - Determines the operational mode of the device.

M0

12

Control Port Mode Definitions

AD1/CDIN

9

Address Bit 1 (I²C) / Control Data Input (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.

SCL/CCLK

10 Serial Control Port Clock (Input) - Serial clock for the serial Control Port.

SDA/CDOUT

AD0/CS

11

Serial Control Data (I²C) / Control Data Output (SPI) (Input/Output) - SDA is a data I/O

line in I²C mode. CDOUT is the output data line for the Control Port interface in SPI mode.

12

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 for SPI format.

DS568F1

7

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