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TERMINAL FUNCTIONS

PCM1772, PCM1773

SLES010G – SEPTEMBER 2001 – REVISED MARCH 2007

PCM1772PW

TERMINAL

I/O

DESCRIPTION

NAME

NO.

AGND1

5

—

AGND2

6

—

AIN

10

I

Monaural analog signal mixer input. The signal can be mixed with the output of the L- and R-channel DACs.

BCK

3

I/O

Serial bit clock. Clocks the individual bits of the audio data input, DATA. In the slave interface mode, this clock is

input from an external device. In master interface mode, the PCM1772 device generates the BCK output to an

external device.

DATA

2

I

Serial audio data input

LRCK

1

I/O

Left and right clock. Determines which channel is being input on the audio data input, DATA. The frequency of

LRCK must be the same as the audio sampling rate. In the slave interface mode, this clock is input from an

external device. In the master interface mode, the PCM1772 device generates the LRCK output to an external

device.

MC

14

I

Mode control port serial bit clock input. Clocks the individual bits of the control data input, MD.

MD

13

I

Mode control port serial data input. Controls the operation mode on the PCM1772 device.

MS

15

I

Mode control port select. The control port is active when this terminal is low.

PD

4

I

Reset input. When low, the PCM1772 device is powered down, and all mode control registers are reset to default

settings.

SCKI

16

I

System clock input

12

—

Power supply for all analog circuits except the lineout amplifier.

11

—

7

—

Decoupling capacitor connection. An external 10-

µF capacitor connected from this terminal to analog ground is

9

O

L-channel analog signal output of the lineout amplifiers

8

O

R-channel analog signal output of the lineout amplifiers

5

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