PCM1791A

SLES071A − MARCH 2003 − REVISED JANUARY 2004

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6

Terminal Functions

TERMINAL

I/O

DESCRIPTIONS

NAME

PIN

I/O

DESCRIPTIONS

AGNDC

16

−

Analog ground (internal bias and current DAC)

AGNDF

9

−

Analog ground (DACFF)

AGNDL

19

−

Analog ground (L-channel I/V)

AGNDR

11

−

Analog ground (R-channel I/V)

BCK

2

I

Bit clock input (1)

DATA

3

I

Serial audio data input (1)

DGND

8

−

Digital ground

LRCK

1

I

Left and right clock (fS) input (1)

MC

27

I

Mode control clock input (1)

MDI

26

I/O

Mode control data input (2)

MDO

25

O

Mode control readback data output (3)

MS

28

I/O

Mode control chip select input (4)

MSEL

24

I

I2C/SPI select (1)

MUTE

4

I

Analog output mute control (1)

RST

6

I

Reset (1)

SCK

5

I

System clock input (1)

VCCC

15

−

Analog power supply (internal bias and current DAC), 5 V

VCCF

21

−

Analog power supply (DACFF), 5 V

VCCL

20

−

Analog power supply (L-channel I/V), 5 V

VCCR

10

−

Analog power supply (R-channel I/V), 5 V

VCOM

14

−

Internal bias decoupling pin

VDD

7

−

Digital power supply, 3.3 V

VOUTL+

17

O

L-channel analog voltage output +

VOUTL–

18

O

L-channel analog voltage output –

VOUTR+

13

O

R-channel analog voltage output +

VOUTR–

12

O

R-channel analog voltage output –

ZEROL

23

O

Zero flag for L-channel

ZEROR

22

O

Zero flag for R-channel

(1) Schmitt-trigger input, 5-V tolerant

(2) Schmitt-trigger input and output. 5-V tolerant input. In I2C mode, this pin becomes an open-drain 3-state output; otherwise, this pin is a CMOS

output.

(3) 3-state output

(4) Schmitt-trigger input and output. 5-V tolerant input and CMOS output