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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 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 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 SBCK SSEL CLDCK BLKCK 50 58 38 39 Q-CODE REGISTER SQCK SUBQ 37 36 MICROCOMPUTER INTERFACE OSC PC ECS ECM 46 59 29 30 53 55 54 CLV SERVO 9~16 57 22 56 35 42 33 34 43 44 45 47 TBUS0~7 TEST RST VDD VSS For Audio Equipment 51 XCK MSEL SMCK PMCK 52 X1 X2 MLD STAT CLVS TRON MCLK DMUTE MDATA For Audio Equipment Package Dimensions (Unit: mm) QFP064-P-1414 MN6626 18.700.40 14.000.20 48 33 32 (1.00) 14.000.20 64 17 1 (1.00) 0.80 16 0.350.10 49 18.700.40 (2.350.20) 2.60max. 2.200.20 0.100.10 0.15 -0.05 +0.10 0.15 SEATING PLANE (1.500.20) 0 to 10 |
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