Panasonic MN662740RE Datasheet

For Audio Equipment

MN662740RE

Signal Processing LSI for CD Players

Overview

The MN662740RE is a CD signal processing LSI that,
on a single chip, combines an optics servo for the CD
player (focus, tracking, and traverse servos), digital signal
processing (EFM demodulation and error correction),
digital servo processing for the spindle motor, digital
filter, and D/A converter, so thus covers all signal
processing functions from the head's RF amplifier onward.

Features

(Optics servo)

Focus, tracking, and traverse servos
Automatic adjustment functions for FO/TR gain,
FO/TR offset, and FO/TR balance
Built-in D/A converter for drive voltage output
Built-in dropout countermeasures
Anti-shock functions
Built-in track cross counter
Support for both linear motor and screw-based traverse
mechanisms

Support for 3- and 1-beam systems

(Spindle motor servo)

(Audio circuits)

(Other)

CLV digital servo

Digital filter using 8-fold oversampling
Built-in D/A converter (1-bit D/A converter)
Built-in differential operational amplifier (2nd order
low pass filter)

Built-in playback pitch control function (±13%)
Guaranteed operation for double-speed playback
except for D/A converter output and 4 f
output

Operating voltage 3.0 to 5.5V

mode serial

s

Applications

CD Players

(Digital signal processing)

Built-in DSL and PLL
Frame synchronization detection, holding, and insertion
Subcode data processing

Q data CRC check
Built-in Q data register

CIRC error detection and correction

C1 decoder: duplex error correction
C2 decoder: triplex error correction
Built-in 16-K bits of RAM for de-interleaving

Audio data interpolation

Four-sample average, hold of previous values
Soft muting
Digital attenuation (256 levels)
Software attenuation (256 levels)
Audio data peak level detection function
Auto cue detection function
Digital audio interface (EIAJ format)

Audio data serial interface for input and output

MN662740RE For Audio Equipment

Block Diagram

51

AV

SS2

AV

DD2

LRCKIN/MSEL

BCLKIN/SSEL

SRDATEIN/PSEL

IOSEL

CLVS

CRC
BLKCK
CLDCK

SBCK
SUBC

DEMPH

RESY

FLAG6/RESY

SSEL
SQCK
SUBQ

PCK

EFM

PLLF

DSLF

I

REF

DRF
ARF

RSEL

PSEL

MLD

MCLK

MDATA

CK384/EFM

VCOF

SMCK

FCLK

PMCK

CSEL

MSEL

X2
X1

STAT

50

)

R

(

PWM

DIGITAL

DEEMPHASIS

8 TIMES

OVER SAMPLING

DIGITAL FILTER

70
66

LOGICS

1 BIT DAC

)

L

(

PWM

–

+

–

+

67
13
62
56
55
68
69

DIGITAL

AUDIO

CLV

SERVO

INTERFACE

80

16K

14
15

BUFFER

SUBCODE

SRAM

53
52
48
47
45
46
44
76

DSL•PLL VCO

EFM DEMODULATION

SYNC INTERPOLATION

CIRC ERROR CORRECTION

SUBCODE DEMODULATION

DEINTERLEAVE

INTERPOLATION

SOFT MUTING

DIGITAL

ATTENUATION

PEAK DETECT

AUTO CUE

78

9
7
8

49

VCO
19
63
20

SERVO CPU
77
79
59

TIMING

GENERATOR

58

PITCH CONTROL

INTERFACE

MICROCOMPUTER

17

A/D CONVERTER INPUT PORT

SERVO
TIMING GENERATOR

D/A

CONVERTER

OUTPUT

PORT

75

OUTR

73

OUTL

74

AV

SS1

72

AV

DD1

65

FLAG

64

IPFLAG

6

TX

24

ECM

23

PC

2

LRCK

3

SRDATA

1

BCLK

16

DMUTE

21

TRV

26

KICK

29

V

REF

61

BYTCK/TRVSTOP

25

ECS

22

TVD

27

TRD

28

FOD

31

TBAL

30

FBAL

54

TOFS

41

TES

12

TLOCK

11

FLOCK

42

PLAY

40

LDON

43

WVEL

10

SENSE

605745187132

SS

DD

V

SS1

DD1

V

DV

DV

RST

TEST

33TE34

FE

RFENV

37

TRCRS

35

VDET

39

BDO

38

RFDET

36

OFT