CS42L51-CNZR datasheet(8/83 Pages) CIRRUS

部件名	CS42L51-CNZR

功能描述	Low Power, Stereo CODEC with Headphone Amp

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制造商	CIRRUS [Cirrus Logic]

网页	http://www.cirrus.com

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8 / 83 page

8

DS679A2

CS42L51

DAC_FILT+

ADC_FILT+

14

16

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

VQ

15

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

MICIN1/

AIN3A

17

Microphone Input 1 (Input) - The full-scale level is specified in the ADC Analog Characteristics specifi-

cation table.

MICIN2/

BIAS/AIN3B

18

Microphone Input 2 (Input/Output) - The full-scale level is specified in the ADC Analog Characteristics

specification table. This pin can also be configured as an output to provide a low noise bias supply for an

external microphone. Electrical characteristics are specified in the DC Electrical Characteristics table.

AIN2A

19

Analog Input (Input) - The full-scale level is specified in the ADC Analog Characteristics specification

table.

AIN2B/BIAS

20

Analog Input (Input/Output) - The full-scale level is specified in the ADC Analog Characteristics specifi-

cation table. This pin can also be configured as an output to provide a low noise bias supply for an exter-

nal microphone. Electrical characteristics are specified in the DC Electrical Characteristics table.

AFILTA

AFILTB

21

22

Filter Connection (Output) - Filter connection for the ADC inputs.

AIN1A

AIN1B

23

24

Analog Input (Input) - The full-scale level is specified in the ADC Analog Characteristics specification

table.

RESET

25

Reset (Input) - The device enters a low power mode when this pin is driven low.

VL

26

Digital Interface Power (Input) - Determines the required signal level for the serial audio interface and

host control port. Refer to the Recommended Operating Conditions for appropriate voltages.

VD

27

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

DGND

28

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

SDOUT

29

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

(M/S)

Serial Port Master/Slave (Input/Output) - Hardware Mode Startup Option: Selects between master and

slave mode for the serial port.

MCLK

30

Master Clock (Input) -Clock source for the delta-sigma modulators.

SCLK

31

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

SDIN

32

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

Thermal Pad

-

Thermal relief pad for optimized heat dissipation. See “QFN Thermal Pad” on page 77.

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