CS43131 datasheet(7/156 Pages) CIRRUS

7 / 156 page

DS1155F1

CS43131

1.3 Pin Descriptions

VCP

N/A

I Charge Pump Supply. Provides charge pump voltage to the

headphone Class H analog output circuit.

——

—

N/A

I Battery supply. Provides voltage to the headphone Class H

circuit.

——

—

GNDD

N/A

I Digital and I/O Ground. Ground for the I/O and core logic. GNDA,

GNDCP, and GNDD must be connected to a common ground area

under the chip.

——

—

GNDA

N/A

I Analog Ground. Ground reference for the internal analog section.

GNDA, GNDCP, and GNDD must be connected to a common

ground area under the chip.

——

—

GNDCP

N/A

I Charge Pump Ground. Ground reference for the charge pump

section. GNDA, GNDCP, and GNDD must be connected to a

common ground area under the chip.

——

—

VCP_FILT+

VCP_FILT–

VCP/

VP 1

I/O Inverting Charge Pump Filter Connection. Power supply from

the inverting charge pump that provides the positive/negative rail

for the analog output. When operating in external VCP_FILT

mode, these pins can directly take in supply voltage.

——

—

–VA

O VA Negative Charge Pump Output. Negative charge pump

output for DAC rail. It is derived from VA.

——

—

FLYP_VA

FLYN_VA

O –VA Charge Pump Cap Positive/Negative Node. Positive/

negative nodes for the DAC negative charge pump’s flying

capacitor.

——

—

FLYP_VCP

VCP/

VP 1

O –VCP Charge Pump Cap Positive Node. Positive node for the

analog output negative charge pump’s flying capacitor.

——

—

FLYC_VCP

VCP/

VP 1

O –VCP Charge Pump Cap Center Node. Center node for the

analog output negative charge pump’s flying capacitor.

——

—

FLYN_VCP

VCP_

FILT±

O –VCP Charge Pump Cap Negative Node. Negative node for the

analog output negative charge pump’s flying capacitor.

——

—

TSO

N/A

I/O Test Output.

——

—

TSI

—

D3, F5

Test Input.

——

—

1.The power supply is determined by ADPT_PWR setting (see Section 4.3.1). VP is used if ADPT_PWR = 001 (VP_LDO Mode) or when necessary for

ADPTPWR = 111 (Adapt-to-Signal Mode).

Table 1-1. Pin Descriptions (Cont.)

Pin Name

QFN

Pin #

WLCSP

Ball

Power

Supply

I/O

Pin Description

Internal

Connection

Digital I/O

Driver

Digital I/O

Receiver

Ground

Charge Pump

Test

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