PA3212

CMOS IC

UNISONICTECHNOLOGIESCO.,LTD

2 of 9

www.unisonic.com.tw

QW-R502-310.A

PIN CONFIGURATION

PIN DESCRIPTION

PIN NO.

PIN NAME

I/O

DESCRIPTION

1,12,13,24

GND

Ground.

11

BYPASS

Connected to voltage divider

2

GAIN0

I

For gain control: Bit 0

3

GAIN1

I

For gain control: Bit 1

5

LLINEIN

I

Line input for Left channel, available when pin15 is held low.

6

LHPIN

I

Headphone input Left channel, available when pin15 is held high.

7,18

I

Power supply voltage.

8

RIN

I

Differential input for right channel. And for single-ended inputs is also AC

ground.

10

LIN

I

Differential input for Left channel. And for single-ended inputs is also AC

ground.

14

PC-BEEP

I

waves is input to this pin, PC-BEEP is enabled.

17

HP/ LINE

I

Input of MUX control. Being high to select the inputs of Pin6, 20, and low

to select inputs of PIN 5, 23.

15

SE/ BTL

I

Low for BTL mode, high for SE mode.

19

I

20

RHPIN

I

Right channel headphone input, selected when pin17 is held high.

23

RLINEIN

I

Headphone input right channel, available when pin17 is held low.

22

SHUTDOWN

I

In shutdown mode when held low, expect PC-BEEP remains active.

4

O

In BTL mode: left channel + output; In SE mode: left channel + output

9

O

In BTL mode: left channel - output; In SE mode: high impedance

16

O

In BTL mode: right channel + output; In SE mode: right channel + output

21

O

In BTL mode: right channel - output; In SE mode: high impedance