PCM1780 datasheet(5/31 Pages) TI

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PCM1780, PCM1781, PCM1782

SLES132A – MARCH 2005 – REVISED APRIL 2005

DEVICE INFORMATION (continued)

TERMINAL FUNCTIONS—PCM1780/PCM1782

TERMINAL

I/O

DESCRIPTION

NAME

NO.

AGND

–

Ground

BCK

Audio data bit clock input(1)

DATA

Audio data digital input(1)

LRCK

Audio data left and right clock input(1)

Mode control clock input(1)(2)

Mode control data input (1)(2)

Mode control select input(1)(2)

9, 10

–

No connection

SCK

System clock input(1)

VCC

–

Power supply, 5-V

VCOM

–

Common voltage decoupling

VOUTL

Analog output for L-channel

VOUTR

Analog output for R-channel

ZEROL/NA

Zero flag output for L-channel / No assign(3)

ZEROR/ZEROA

Zero flag output for R-channel / Zero flag output for L- and R-channels(3)

(1)

Schmitt-trigger input

(2)

Pulldown

(3)

Open-drain output (PCM1782)

TERMINAL FUNCTIONS—PCM1781

TERMINAL

I/O

DESCRIPTION

NAME

NO.

AGND

–

Ground

BCK

Audio data bit clock input(1)

DATA

Audio data digital input(1)

DEMP0

De-emphasis control(1)(2)

DEMP1

De-emphasis control(1)(2)

FMT

Data format select(1)(2)

LRCK

Audio data left and right clock input(1)

MUTE

Soft mute control(1)(2)

–

No connection

SCK

System clock input(1)

TEST

–

Test pin for factory use. Must be LOW or open(1)(2)

VCC

–

Power supply, 5-V

VCOM

–

Common voltage decoupling

VOUTL

Analog output for L-channel

VOUTR

Analog output for R-channel

ZEROA

Zero flag output for L- and R-channels

(1)

Schmitt-trigger input

(2)

Pulldown

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