QS7785CF データシートの表示（PDF） - Nippon Precision Circuits

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QS7785CF

3D 2/4-Channel Stereo Surround Synthesizer

Nippon Precision Circuits  

PIN DESCRIPTION

Number

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

32

33

34

35

36

Name

Parallel

Serial

QXCC4

QXDC1

QXDC2

QXDC3

QXDC4

GND

VDD

P/S

SP

–

–

STRB

MONO

AC

BYP

–

–

SDA

SUR

–

–

SCL

BASS

MUTE

PSAVE

VREFOUT

NC

VREFIN

LPC

CIN

COUT

SLOUT

SROUT

FLOUT

FROUT

QXBC4

QXBC3

QXBC2

QXBC1

VCC

QXAC4

QXAC3

QXAC2

QXAC1

BASC1

QS7785PF/CF

I/O

Description

O QEXPANDER C capacitor 4

I QEXPANDER D capacitor 1

O QEXPANDER D capacitor 2

I QEXPANDER D capacitor 3

O QEXPANDER D capacitor 4

– Ground

– 4.5 to 5.5V digital supply

I Input mode control (HIGH: parallel, LOW: serial)

I Enhancement control (HIGH: high spread, LOW: low spread)

I Serial data strobe (not applicable to QS7785CF)

I Mono-to-stereo convert select (HIGH: mono to stereo mode, LOW: normal mode)

I Center output control (HIGH: center on, LOW: center off)

I Bypass control (HIGH: bypass, LOW: Qsurround)

I/O Serial data input (also serves as ACK signal output for I2C bus)

I Surround speaker control (HIGH: surround speaker on, LOW: off)

I Serial clock signal input

I Bass boost mode control (HIGH: bass boost on, LOW: bass boost off)

I Mute signal control (HIGH: mute on, LOW: mute off)

I Power save control (HIGH: power save on, LOW: power save off)

O VCC/2 reference voltage output

– No connection

I VCC/2 reference voltage output (biased internally to VCC/2)

I Center output lowpass filter

I COUT output signal feedback input for front-channel output

O Center signal output

O Surround left-channel signal output

O Surround right-channel signal output

O Front left-channel signal output

O Front right-channel signal output

O QEXPANDER B capacitor 4

I QEXPANDER B capacitor 3

O QEXPANDER B capacitor 2

I QEXPANDER B capacitor 1

– 5 to 13V DC analog supply

O QEXPANDER A capacitor 4

I QEXPANDER A capacitor 3

O QEXPANDER A capacitor 2

I QEXPANDER A capacitor 1

I Bass boost right-channel signal input

NIPPON PRECISION CIRCUITS—3

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