CS47L15 datasheet(7/279 Pages) CIRRUS

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DS1137F2

CS47L15

1.2 Pin Descriptions

SPKTXDAT/

GPIO13

DBVDD

I/O

Digital speaker (PDM) data output/GPIO/I2C data

input and output. GPIO output is selectable CMOS or

open drain; SPKTXDAT output is CMOS.

PU/PD/K/H/

C/OD

GPIO13 input

with bus-keeper

Supply

AGND

—

Analog ground (return path for AVDD and MICVDD)

—

AVDD

—

Analog supply

—

CPGND

C12

—

Charge pump ground (return path for CPVDD)

—

CPVDD

C14

—

Supply for charge pump

—

DBVDD

K11

—

Digital buffer (I/O) supply

—

DCVDD

—

Digital core supply

—

DGND

—

Digital ground (return path for DCVDD and DBVDD)

—

MICVDD

—

Microphone bias supply (input to MICBIAS regulator)

—

SPKGNDN

—

Speaker driver ground (return path for SPKVDD) 3

——

SPKGNDP

—

Speaker driver ground (return path for SPKVDD) 3

——

SPKVDD

—

Speaker driver supply

—

SUBGND

—

Substrate ground

—

1.Note that the default conditions described are not valid if modified by the boot sequence or by a wake-up control sequence.

2.The analog input functions on these pins are referenced to the MICVDD power domain. The digital input/output functions are referenced to the

MICVDD or MICBIAS1 power domain, as selected by the IN1_DMIC_SUP field.

3. Separate P/N ground connections are provided for the Class D speaker output, which provides flexible support for current monitoring and

output-protection circuits. If this option is not used, these ground connections should be tied together on the PCB.

Table 1-1. Pin Descriptions (Cont.)

PU = Pull-up, PD = Pull-down, K = Bus keeper, H = Hysteresis on CMOS input, Z = Hi-Z (High impedance), C = CMOS, OD = Open drain.

Pin Name

Pin #

Power

Supply

I/O

Pin Description

Digital Pad

Attributes

State at Reset 1

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