CS42L52 datasheet(9/82 Pages) CIRRUS

9 / 82 page

DS680A1

CS42L52

1.1

I/O Pin Characteristics

Input and output levels and associated power supply voltage are shown in the table below. Logic levels

should not exceed the corresponding power supply voltage.

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

AGND

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

FILT+

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

cuits.

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

MICBIAS

Microphone Bias (Output) - Low noise bias supply for an external microphone. Electrical charac-

teristics are specified in the DC Electrical Characteristics table.

AIN4A,B

AIN3A,B

21,22

23,24

Line-Level Analog Inputs (Input) - Single-ended stereo line-level analog inputs.

MIC1+,-

MIC2+,-

21,23

22,24

Differential Microphone Inputs (Input) - Differential stereo microphone inputs.

MIC2A,B

MIC1A,B

21,22

23,24

Single-Ended Microphone Inputs (Input) - Single-ended stereo microphone inputs.

AIN2A,B

AIN1A,B

25,26

29,30

Line-Level Analog Inputs (Input) - Single-ended stereo line-level analog inputs.

AFILTA,B

27,28 Anti-alias Filter Connection (Output) - Anti-alias filter connection for the ADC inputs.

SPKR/HP

Speaker/Headphone Switch (Input) - Powers down the left and/or right channel of the speaker

and/or headphone outputs.

RESET

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

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

face and host control port.

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

DGND

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

SDOUT

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

MCLK

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

SCLK

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

SDIN

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

LRCK

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

the serial audio data line.

GND/Thermal Pad

Ground reference for PWM power FETs and charge pump; thermal relief pad for optimized heat

dissipation.

Power

Supply

Pin Name

I/O

Driver

Receiver

RESET

Input

1.65 V - 3.47 V, with Hysteresis

SCL

Input

1.65 V - 3.47 V, with Hysteresis

SDA

Input/Output

1.65 V - 3.47 V, CMOS/Open Drain

1.65 V - 3.47 V, with Hysteresis

MCLK

Input

1.65 V - 3.47 V

LRCK

Input/Output

1.65 V - 3.47 V, CMOS

1.65 V - 3.47 V

SCLK

Input/Output

1.65 V - 3.47 V, CMOS

1.65 V - 3.47 V

SDOUT

Output

1.65 V - 3.47 V V, CMOS

SDIN

Input

1.65 V - 3.47 V

SPKR/HP

Input

1.65 V - 2.63 V

SPKR_OUTA+

Output

1.6 V - 5.25 V Power MOSFET

SPKR_OUTA-

Output

1.6 V - 5.25 V Power MOSFET

SPKR_OUTB+

Output

1.6 V - 5.25 V Power MOSFET

SPKR_OUTB-

Output

1.6 V - 5.25 V Power MOSFET

CS42L52 Datasheet(PDF) 9 Page - Cirrus Logic

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