Panasonic MN6626 Datasheet
For Audio Equipment
MN6626
Signal Processing LSI for CD Players
Overview
The MN6626 is a CD signal processing LSI that, on a
single chip, provides both basic CD player signal processing (EFM demodulation, error correction, and CLV
servo) and extra functionality for increasing the versatility and the performance of the CD player.
Features
Data slice
Phase-locked loop for reproducing the bit clock
Frame synchronization detection, holding, and insertion
EFM demodulation
Subcode data processing
Subcode Q data CRC check
Built-in subcode Q data register
Serial interface for subcodes P through W data
CIRC error detection and correction
C1 decoder: duplex error correction
C2 decoder: triplex error correction
Built-in 16-K bits of SRAM for de-interleaving
Audio data interpolation
Average, hold of previous values
Soft muting
Digital attenuation (256 levels)
CLV digital servo for spindle motor
Digital audio interface (EIAJ format)
Audio data peak level detection function
Auto cue detection function
Microcomputer serial interface
Audio data serial interface
Operating voltage 3.4 to 5.5V
Appications
CD players
MN6626 For Audio Equipment
Block Diagram
VSSVDDV
RST
TEST
TBUS0~7
56
22
57
9~16
INTERFACE
MICROCOMPUTER
35
47
STAT
45
DMUTE
42
MLD
44
MDATA
43
MCLK
SYNDROME
COMPUTATION
LDG
FLAG
24
17
CIRC
DECODER
SCK
SRDATA
RDG
27
26
25
INTERPOLATION
FCLK
BYTCK
IPFLAG
LRCK
21
19
20
18
28
SOFT MUTING
DIGITAL
ATTENUATION
WDCK
23
MEMP
TX
41
DIGITAL
AUDIO
INTERFACE
PEAK
DETECTION
AUTO-CUE
PLLF
DSLF
34
X2
16K
SRAM
RAM
ADDRESS
GENERATOR
FREQ.
COMP.
6
VCO
TIMING
Q-CODE
583839
SSEL
SBCK
GENERATOR
REGISTER
37
36
SQCK
CLDCK
BLKCK
CLV
535554
PC
SUBQ
PHASE
COMP.
5
DSL
SYNC
DETECTION
8
3
DRF
ARF
61
DO
RSEL
4
EFM DATA
DEMODULATION
SYNC
INTERPOLATION
PROTECTION
60
RESY
SUBCODE
CRCC
40
48
CRC
DEMODULATION
CHECK
49
50
SUBC
DEMPH
OSC
SERVO
ECS
ECM
33
X1
30
PMCK
29
XCK
59
MSEL
46
SMCK
52
CLVS
51
TRON
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