STA538B datasheet(7/59 Pages) STMICROELECTRONICS

部件名	STA538B

功能描述	2 x 1.3 W class-D amplifier with analog or digital input 2.0 multichannel digital audio processor with FFX

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制造商	STMICROELECTRONICS [STMicroelectronics]

网页	http://www.st.com

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STA538

Connection diagrams and pin descriptions

7/59

2.1.2

Pin description

Table 1.

Package: TFBGA48

Pin #

Name

Type

Description

D7

RST_N

Digital input

Reset (active low)

D1

XTI

Digital input

Crystal input or master clock input

E1

MCLK33

Digital input

Master clock input 3.3 V capable

XTI: crystal input or master clock input 3.3 V capable

G3

SELCLK33

Digital input

Master clock input selector:

SELCLK33 = 1 -> MCLK33 selected

SELCLK33 = 0 -> XTI selected

D2

XTO

Digital output

Crystal output

C7

CLKOUT/

PWM2B

Digital output

Buffered clock output / PWM2B FFXTm

F1

SCL

Digital input

I2C serial clock

G1

SDA

Digital

input/output

I2C serial data

G2

I2CDIS

Digital input

I2C disable pin (active high)

G8

STBY

Digital input

Standby (active high)

B7

MUTE

Digital input

Mute (active high)

H6

BICLKI

Digital

input/output

Input serial audio interface bit-clock

H5

LRCLKI

Digital

input/output

Input serial audio interface L/R-clock

E2

SDATAI

Digital input

Input serial audio interface data

G6

BICLKO/

PWM1A

Digital

input/output

Output serial audio interface bit-clock

(volume DOWN when I2CDIS = 1) / PWM1A FFXTm

G5

LRCLKO/

PWM1B

Digital

input/output

Output serial audio interface L/R-clock

(volume UP when I2CDIS = 1) / PWM1B FFXTm

G4

SDATAO/

PWM2A

Digital output

Output serial audio interface data / PWM2A FFXTm

H2

TM

Digital input

Test mode (active high)

H7

INL

Analog input

ADC left channel line input or microphone input

H8

INR

Analog

input/output

ADC right channel line input

G7

VBIAS

Analog

input/output

ADC microphone bias voltage

D8

VCM

Analog

input/output

ADC common mode voltage

F8

AVDD

Supply

ADC analog supply

E8

AGND

Ground

ADC analog ground

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