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