For Audio Equipment

MN66271RA
Signal Processing LSI for Compact Disc Players

Overview

The MN66271RA is a CD signal processing LSI that, on a single chip, combines optics servos 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. (Spindle motor servo) CLV digital servo (Audio circuits) Digital filter using 8 times oversampling Built-in D/A converter (1-bit D/A converter) Built-in differential operational amplifier (PWM output) (Other) Built-in playback pitch control function (13%) Operating voltage 4.5 to 5.5 V

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 Digital Signal Processing (Digital signal processing) Built-in DSL and PLL Frame synchronization detection, holding, and insertion Subcode data processing Subcode Q data CRC check Built-in subcode 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 use in deinterleaving Audio data interpolation Averaging or retention of previous values Soft muting Digital attenuation (256 levels) Software attenuation (256 levels) Audio data peak level detection function Automatic cuing detection function Digital audio interface (EIAJ format) Audio data serial interface

Applications

CD Players

Pin Assignment

BYTCK CLDCK FCLK IPFLAG FLAG CLVS CRC DEMPH RESY RST2 TEST AVDD1 OUTL AVSS1 OUTR RSEL CSEL PSEL MSEL SSEL 22 21
VDD X2 X1 VSS SBCK SUBC PDO PCK EFM AVSS2 AVDD2 VCOF PLLF DSLF DRF IREF ARF WVEL PLAY TES
LDON BDO RFDET TRCRS OFT VDET RFENV TE FE TBAL FBAL VREF FOD TRD KICK ECS ECM PC TVD TRV
BCLK LRCK SRDATA DVDD1 DVSS1 TX MCLK MDATA MLD SENSE FLOCK TLOCK BLKCK SQCK SUBQ DMUTE STAT RST SMCK PMCK

(TOP VIEW) QFS080-P-1414

Block Diagram
8 TIMES OVER SAMPLING DIGITAL FILTER

DIGITAL DEEMPHASIS

PWM (R)

51 AVSSAVDD2

1 BIT DAC LOGICS

73 PWM (L)

DIGITAL AUDIO INTERFACE
CLVS CRC BLKCK CLDCK SBCK SUBC DEMPH RESY
SUBCODE BUFFER CIRC ERROR CORRECTION 16K SRAM DEINTERLEAVE
74 AVSSAVDDFLAG 64 IPFLAG 6
EFM DEMODULATION SYNC INTERPOLATION SUBCODE DEMODULATION
80 SSEL 14 SQCK 15 SUBQ PCK EFM PLLF DSLF IREF DRF ARF RSEL PSEL 78

CLV SERVO

ECM PC
9 MLD 7 MCLK 8 MDATA 49 VCOF 61 BYTCK 19 SMCK 63 FCLK 20 PMCK 77 CSEL 79 MSEL 59 XXSTAT
2 LRCK 3 SRDATA 1 BCLK 16 DMUTE 21 TRV 26 KICK 29 V 25 REF ECS 22 TVD 27 TRD 28 FOD 31 TBAL 30 FBAL 41 TES 12 TLOCK 11 FLOCK 42 PLAY 40 LDON 43 WVEL 10 SENSE
INTERPOLATION SOFT MUTING DIGITAL ATTENUATION PEAK DETECT AUTO CUE

DSLPLL

TIMING GENERATOR PITCH CONTROL VCO

MICROCOMPUTER INTERFACE

SERVO CPU

A/D CONVERTER 34

INPUT PORT 39
SERVO TIMING GENERATOR OFT
VDD VSS DVDD1 DVSS1 RST TEST

OUTPUT PORT

D/A CONVERTER

Pin Descriptions

Pin No. Symbol BCLK LRCK SRDATA DV DD1 DVSS1 TX MCLK MDATA MLD SENSE FLOCK TLOCK BLKCK SQCK SUBQ DMUTE STAT RST SMCK PMCK TRV TVD PC ECM ECS KICK TRD FOD VREF FBAL TBAL FE TE RFENV VDET OFT TRCRS RFDET BDO LDON I/O O O O I I O I I I O O O O I O I O I O O O O O O O O O O I O O I I I I I I I I O
Function Description SRDATA bit clock output Left/right channel discrimination signal output Serial data output Power supply for digital circuits Ground for digital circuits Digital audio interface output signal Microcomputer command clock input (Data is latched at rising edge.) Microcomputer command data input Microcomputer command load signal input. Focus servo convergence signal. Tracking servo convergence signal. External clock input for subcode Q register Subcode Q data output Muting input. Reset input. "H" level: muting. "L" level: reset. Status signal (CRC, CUE, CLVS, TTSTOP, FCLV, and SQOK) If MSEL is at "H" level, 8.4672 MHz clock signal output. If MSEL is at "L" level, 4.2336 MHz clock signal output. 88.2 kHz clock signal output Traverse forced feed output Traverse drive output Spindle motor ON signal. Spindle motor drive signal (forced mode output) Spindle motor drive signal (servo error signal output) Kick pulse output Tracking drive output Focus drive output Reference voltage for DA output (TVD, ECS, TRD, FOD, FBAL, and TBAL) Focus balance adjustment output Tracking balance adjustment output Focus error signal input (analog input) Tracking error signal input (analog input) RF envelope signal input (analog input) Vibration detection signal input. Offtrack signal input. Track cross signal input RF detection signal input. Dropout signal input. Laser ON signal output. "L" level: detected. "H" level: dropout. "H" level: ON. "H" level: vibration detected. "H" level: offtrack. "L" level: ON. 3-State "L" level: load. "L" level: convergence. "L" level: convergence. Sense signal output (OFT, FESL, NACEND, NAJEND, POSAD, and SFG)

Subcode block clock signal (fBLKCK =75 Hz, normal playback)
Pin Descriptions (continued)
Pin No. 77 Symbol TES PLAY WVEL ARF IREF DRF DSLF PLLF VCOF AV DD2 AV SS2 EFM PCK PDO SUBC SBCK VSS X1 X2 VDD BYTCK CLDCK FCLK IPFLAG FLAG CLVS CRC DEMPH RESY RST2 TEST AV DD1 OUTL AV SS1 OUTR RSEL CSEL I/O O O O I I I I/O I/O I/O I I O O O O I I I O I O O O O O O O O O I I I O I O I I
Function Description Tracking error shunt signal. "H" level: shunt. Play signal output. RF signal input Reference current input pin DSL bias pin DSL loop filter pin PLL loop filter pin VCO loop filter pin for pitch control Power supply for analog circuits (DSL, PLL, and D/A converter output) Ground for analog circuits (DSL, PLL, and D/A converter output) EFM signal output PLL derived clock output with fPCK=4.3218 MHz Phase comparator output for EFM and PCK signals Subcode serial output data output Serial clock input for subcode serial output Ground for oscillator circuit Crystal oscillator circuit input pin. f=16.9344 MHz. Crystal oscillator circuit output pin. f=16.9344 MHz. Power supply for oscillator circuit Byte clock signal output Subcode frame clock signal output pin (fCLDCK=7.35 kHz) Crystal frame clock signal output (fFCLK=7.35 kHz) Interpolation flag signal output. Flag signal output Spindle servo phase synchronization signal output. "H" level: CLV. "L" level: rough servo. Subcode CRC check result output. De-emphasis detection signal output. Frame resynchronization signal. "H" level: OK. "L" level: no good. "H" level: ON. "H" level: synchronized. "L" level: out of sync. Reset pin for stopping operation of circuits past D/A converter Test pin. audio outputs) Left channel audio output Ground for analog circuits (common use for left and right channel audio outputs) Right channel audio output RF signal polarity selection pin. Test pin. "H" level: bright level is "H. "L" level: bright level is "L. Keep this pin at "L" level. Keep this pin at "H" level. Power supply for analog circuits (common use for by left and right channel "H" level: interpolation. "H" level: play. Double-speed status signal output. "L" level: double-speed.
Pin No. Symbol PSEL MSEL I/O I I
Function Description Test pin. Frequency selection pin for SMCK pin output. "H" level: SMCK=8.4672 MHz. "L" level: SMCK=4.2336 MHz. Keep this pin at "L" level.
SUBQ pin output mode selection pin. "H" level: buffered subcode Q mode.

Theatre Sound Playback Product Comparison Sheet

(Draft Revised10/7/09)

See Reverse for Notes
S/PDIF Optical S/PDIF Co-ax SCMS Defeat AES/EBU Cloning Scrubbing/Jog Wheel Destructive Non-Destructive Cue Titling RAM Start Auto-Cue Auto-Pause

Analog

Unbal Out Unbal In

Digital

Editing

Cueing

Storage Capacity Media Cost per Minute Stereo Direct Search

Sampling Rate

Rack Mountable Computer Interface Synchronization Variable Speed

Compression

Quantization

Format

Manufacturer
Technics Technics Tascam Marantz Sony Tascam
Sl-PG480A SL-PS770D CD201 PMD321 CDP-L3 CD301 DN-C680 CD401 CDP-D500 CD601 CD701 CDP-3100 MDSJE500 MD301 DN-M2000R MD501 DN-M1050R DN-981F MDS-B6 MD801R DN-990R MDS-B5 SV4100 D-15 D-25 Digicart II Plus Instant Replay 2.02 DR8 Darwin D-90 DR16 D-160 SFX 5.0 AudioBox DM1616HD LD-88LD-16S

Retail Cost

20,400
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74 min. O

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AMX/Crestron RS232 RS232C/RS422 A D-sub 9-pin;

Compact Disc

Denon Tascam Sony Tascam Tascam Sony Sony Tascam Denon Tascam Denon
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MiniDisc
Denon Sony Tascam Denon Sony Panasonic Fostex Fostex 360 Systems 360 Systems Akai EMU Fostex Akai Fostex

X X X X X X X X 8 4

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DAT 2 Track Hard Disk Hard Disk Multi-Track
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RS232/422A; Dsub 9-pin; RS232/422A; Dsub 9-pin; ACD19A RS232/Par RS232/Par RS232; D-sub 9pin ACD19A RS232 RS-422A Option RS-422A SCSI/RS422 SCSI/Printer SCSI/RS422 option SCSI SCSI option SCSI/RS422 option SCSI SFX AB Edit, AB Control (option), Show Man (option) Cue Station, Wildtracks (BeOS)
X $0.min. Varies X X Varies X Varies Varies Varies
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O 8 O 8

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X X X O $0.20 X X X X $0.20 X X X $1.00 X X X X X X X $1.00 $1.00 $2.00

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Stage Research Asynnchronous Multi-Track Hard Disk Richmond LCS

SCSI RS232/422

Software

Bal Out

Bal In