QS7779CM Ver la hoja de datos (PDF) - Nippon Precision Circuits

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QS7779CM

3D Stereo Enhancement and 3D Virtual Stereo Surround with Dolby Pro Logic and Mixed DVD (AC-3) Decoder

Nippon Precision Circuits  

QS7779PM/CM

PIN DESCRIPTION

Name

Number

I/O

Parallel

Serial

Description

1

QXAC3

I

Capacitor 3 for QEXPA N D E R fi lter A

2

QXAC2

I

Capacitor 2 for QEXPA N D E R fi lter A

3

QXAC1

I

Capacitor 1 for QEXPA N D E R fi lter A

4

RIN

I

Right channel signal input

5

LIN

I

Left channel signal input

6

COUT

O

Decoded center signal output

7

CIN

I

Center signal input for summing with the right and the left signal outputs

8

VREFIN

O

Internally generated reference voltage (VCC/2)

9

VREFOUT

O

Buffered reference voltage (VCC/2)

10

VREF

I

Signal reference input

11

GND

–

Ground 0V

SPRD

–

12

–

SCL1

I

Enhancement control (H: spread maximum, L: spread minimum)

I

Serial data shift clock

BYP

–

I

Bypass control (H: Bypass on, L: Qsurround on)

13

–

SDA2

I/O

Serial data input. ACK data output for I2C (QS7779CM)

14

P/S

I

Interface mode control (H: parallel I/O, L: serial I/O)

15

VDD

–

Digital pow er supply DC4.5 to 5.5V

MUTE

–

16

–

STRB

I

Output mute control (H: mute on, L: mute off)

I

Serial data strobe (not applicable to I2C of Q S 7 7 7 9 C M )

17

LOUT

O

Left signal output

18

ROUT

O

Right signal output

19

QXBC4

I

Capacitor 4 for QEXPA N D E R fi lter B

20

QXBC3

I

Capacitor 3 for QEXPA N D E R fi lter B

21

QXBC2

I

Capacitor 2 for QEXPA N D E R fi lter B

22

QXBC1

I

Capacitor 1 for QEXPA N D E R fi lter B

23

VCC

–

Analog power supply DC5 to 13V

24

QXAC4

I

Capacitor 4 for QEXPA N D E R fi lter A

1. QS7779CM:CMOS input. No protective diode between the terminal and V D D.

QS7779PM:CMOS input. Protective diode is in between the terminal and V D D.

2. QS7779CM:Nch open drain terminal. No protective diode between terminal and V D D.

QS7779PM:CMOS input. Protective diode is in between the terminal and V D D.

NIPPON PRECISION CIRCUITS—3

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