Pin Functions

LC8901 (DIP42S)

Note: The DIP42S package version has one fewer each of the digital system power supply and digital system ground pins than the QIP44M package version.

No. 4079-4/15

LC8901, 8901Q

Pin No.

Symbol

I/O

Pin function and circuit operation

1

DIN1

I

2

DIN2

I

Data input pins with built-in amplifiers

3

DIN3

I

4

DIN4

I

5

DGND

—

Digital system ground

6

DIN5

I

Data input pins without built-in amplifiers

7

DIN6

I

8

DOUT1

O

Input data through output

9

DOUT2

O

10

RC1

I

RC oscillator connection

11

RC2

O

12

LPF

I

High: LPF time constant switching mode, low: fixed mode. This pin is normally high.

13

STOP

I

High: VCO operation stopped, low: normal operation

14

TEST1

I

Test pins (These pins are normally low.)

15

TEST2

I

16

—

Analog system power supply

17

R

I

VCO oscillator band adjustment

18

AGND

—

Analog system ground

19

VIN

I

VCO free-running oscillator setup

20

VCO

O

PLL low-pass filter

21

DGND

—

Digital system ground

22

CLK

I

Clock mode switching. High: 512fs, low: 384fs

23

XSYS

I

Crystal mode setting. High: crystal mode

24

XIN1

I

Crystal oscillator connection

25

XIN2

O

26

—

Digital system power supply

27

LOCK

O

High: PLL locked, low: unlocked

28

ERROR

O

Error mute signal output

29

FS256

O

256fs clock output

30

CLKOUT

O

VCO oscillator and crystal oscillator clock output

31

EMPHA

O

High: emphasis present, low: no emphasis

32

BCLK

O

Bit clock output

33

DATAOUT

O

Audio data output

34

LRCK

O

Left/right clock output. High: left channel, low: right channel

35

SUB1

O

Sampling frequency output

36

SUB2

O

37

DO

O

Microprocessor interface output

38

DI

I

Microprocessor interface input

39

CE

I

Microprocessor interface chip enable input

40

CL

I

Microprocessor interface clock input

41

XMODE

I

Used to start system operation after power on.

42

—

Digital system power supply