CS42L56-CNZ 데이터 시트보기 (PDF) - Cirrus Logic

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CS42L56-CNZ

Ultralow Power, Stereo Codec with Class H Headphone Amp

Cirrus Logic 

1. PIN DESCRIPTIONS

CS42L56

SDIN 1

LRCK 2

SDA/CDIN 3

SCL/CCLK 4

AD0/CS 5

VCP 6

FLYP 7

+VHPFILT 8

FLYC 9

FLYN 10

GND/Thermal Pad

Top-Down (Through-Package) View

40-Pin QFN Package

30 AIN2A

29 AIN1B

28 AIN1REF/AIN3A

27 AIN1A

26 MICBIAS

25 AFILTB

24 AFILTA

23 VQ

22 FILT+

21 AGND

Pin Name

SDIN

LRCK

SDA/CDIN

SCL/CCLK

AD0/CS

VCP

FLYP

+VHPFILT

FLYC

FLYN

#

Pin Description

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

2

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

serial audio data lines.

3

Serial Control Data (Input/Output) - SDA is the bidirectional data pin for the I²C control interface.

CDIN is the input data pin for the SPI control interface.

4 Serial Control Port Clock (Input) - Serial clock for the I²C and SPI control interfaces.

5

Chip Address (I²C) / Chip Select (SPI) (Input) - For I²C operation, this pin must remain static high

or low. For SPI, CS is the chip-select pin.

6 Step-Down Charge Pump Power (Input) - Power supply for the step-down charge pump.

7

Charge Pump Cap Positive Node (Output) - Positive node for the step-down charge pump’s flying

capacitor.

8

Step-Down Charge Pump Filter Connection (Output) - Power supply from the step-down charge

pump that provides the positive rail for the headphone and line amplifiers

9

Charge Pump Cap Common Node (Output) - Common positive node for the step-down and invert-

ing charge pumps’ flying capacitors.

10

Charge Pump Cap Negative Node (Output) - Negative node for the inverting charge pump’s flying

capacitor.

8

DS851F2

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