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 pro-
cessing (EFM demodulation, error correction, and CLV
servo) and extra functionality for increasing the versatil-
ity 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
DSLF
PLLF
6
5
Block Diagram
DRF
ARF
PHASE
COMP.
FREQ.
COMP.
SYNDROME
COMPUTATION
4
3
DSL
RSEL
DO
VCO
CIRC
DECODER
FLAG
17
8
61
SYNC
DETECTION
RESY
16K
SRAM
SUBCODE
DEMODULATION
60
EFM DATA
DEMODULATION
SYNC
INTERPOLATION
PROTECTION
INTERPOLATION
SOFT MUTING
DIGITAL
ATTENUATION
CRC
DEMPH
SUBC
23
41
PEAK
DETECTION
AUTO-CUE
DIGITAL
AUDIO
INTERFACE
TIMING
GENERATOR
RAM
ADDRESS
GENERATOR
48
40
49
CRCC
CHECK
24
25
26
27
28
18
20
19
21
LDG
RDG
SRDATA
SCK
LRCK
IPFLAG
BYTCK
FCLK
WDCK
TX
MEMP
SBCK
SSEL
CLDCK
BLKCK
50
58
38
39
Q-CODE
REGISTER
SQCK
SUBQ
MICROCOMPUTER
INTERFACE
37
36
PC
ECS
ECM
OSC
46
59
29
30
33
34
43
44
53
55
54
42
CLV
SERVO
9~16
57
22
56
35
45
47
TBUS0~7
TEST
RST
V
DD
V
SS
For Audio Equipment
51
X1
X2
XCK
MSEL
SMCK
PMCK
52
MLD
STAT
CLVS
TRON
MCLK
DMUTE
MDATA
For Audio Equipment
Package Dimensions (Unit: mm)
QFP064-P-1414
MN6626
18.70
±0.40
14.00
±0.20
48
33
32
(1.00)
14.00
±0.20
64
17
1
(1.00)
0.80
16
0.35
±0.10
49
18.70
±0.40
(2.35
±0.20
)
2.60max.
2.20
±0.20
0.10
±0.10
0.15
-0.05
+0.10
0.15
SEATING PLANE
(1.50
±0.20
)
0 to 10°
