QS7777 Ver la hoja de datos (PDF) - Nippon Precision Circuits

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QS7777

QSurround™ 3D Virtual Audio Processor for Dolby AC-3 and ProLogic

Nippon Precision Circuits  

PIN DESCRIPTION

Number

1

2

3

4

5

6

7

8

Name

Parallel

Serial

VREFOUT

VREFIN

MSC3

MSC2

MSC1

GND

PSAVE

–

–

STRB

MUTE

–

–

SCL

SPREAD

–

9

–

SDA

10

AC

11

AR

12

MO

13

BYP

14

P/S

15

VDD

16

RROUT

17

RLOUT

18

COUT

19

FROUT

20

FLOUT

21

QXAC1

22

QXAC2

23

QXAC3

24

QXAC4

25

QXAC5

26

QXBC1

27

QXBC2

28

QXBC3

29

QXBC4

30

QXBC5

31

VCC

32

QXCC1

33

QXCC2

34

QXCC3

35

QXCC4

36

QXDC1

37

QXDC2

38

QXDC3

39

QXDC4

40

FLIN

41

FRIN

42

CIN

43

SUBIN

44

RLIN

45

RRIN

46

MSC4

47

MSC5

48

MSC6

QS7777PF/CF

I/O

Description

O V C C /2 reference voltage output

I V C C /2 reference voltage input (biased internally to V C C /2)

I Mono/stereo conversion filter capacitor 3

I Mono/stereo conversion filter capacitor 2

I Mono/stereo conversion filter capacitor 1

– Ground

I Pow er save control (HIGH: pow er save on, LOW: pow er save off)

I Serial data strobe (not used on I2C bus device QS7777CF)

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

I

Serial data shift clock input (QS7777CF: CMOS input, no protection diode connected

between this pin and VDD)

I Enhancement control (HIGH: maximum spread, LOW: minimum spread)

I/O

Serial data input (and ACK signal output for I2C bus device QS7777CF: n-channel

open-drain pin, no protection diode connected between this pin and VDD).

I Center speaker control (HIGH: actual center, LOW: virtual center)

I Rear speaker control (HIGH: actual rear, LOW : virtual rear)

I Mono-to-stereo convert select (HIGH: ON, LOW: OFF)

I Bypass/QSurround select control (HIGH: bypass, LOW: QSurround)

I Interface method select (HIGH: parallel input, LOW: serial input)

– 4.5 to 5.5V DC digital supply

O Rear right-channel signal output

O Rear left-channel signal output

O Center signal output

O Front right-channel signal output

O Front left-channel signal output

I QExpander filter A capacitor 1

I QExpander filter A capacitor 2

I QExpander filter A capacitor 3

I QExpander filter A capacitor 4

I QExpander filter B capacitor 5

I QExpander filter B capacitor 1

I QExpander filter B capacitor 2

I QExpander filter B capacitor 3

I QExpander filter B capacitor 4

I QExpander filter B capacitor 5

– 5 to 13V DC analog supply

I QExpander filter C capacitor 1

I QExpander filter C capacitor 2

I QExpander filter C capacitor 3

I QExpander filter C capacitor 4

I QExpander filter D capacitor 1

I QExpander filter D capacitor 2

I QExpander filter D capacitor 3

I QExpander filter D capacitor 4

I Front left-channel signal input

I Front right-channel signal input

I Center-channel signal input

I Sub-woofer signal input

I Rear left-channel signal input

I Rear right-channel signal input

I Mono/stereo conversion filter capacitor 4

I Mono/stereo conversion filter capacitor 5

I Mono/stereo conversion filter capacitor 6

NIPPON PRECISION CIRCUITS—3

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