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HD49235FS Dataheets PDF



Part Number HD49235FS
Manufacturers Hitachi Semiconductor
Logo Hitachi Semiconductor
Description Digital Signal Processor for CD
Datasheet HD49235FS DatasheetHD49235FS Datasheet (PDF)

www.DataSheet4U.com HD49235FS Digital Signal Processor for CD ADE-207-162A(Z) 2nd. Edition August 1995 Description The HD49235FS is a digital signal processor for compact disc (CD) applications. Features • Powerful error correction capability: two-symbol C1 correction and four-symbol C2 correction • Quadruple-speed reproduction supported (maintaining two-symbol C1 and four-symbol C2 error correction) • On-chip analog PLL and digital PLL (VCO and phase detector) • Automatic adjustment of the f.

  HD49235FS   HD49235FS



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www.DataSheet4U.com HD49235FS Digital Signal Processor for CD ADE-207-162A(Z) 2nd. Edition August 1995 Description The HD49235FS is a digital signal processor for compact disc (CD) applications. Features • Powerful error correction capability: two-symbol C1 correction and four-symbol C2 correction • Quadruple-speed reproduction supported (maintaining two-symbol C1 and four-symbol C2 error correction) • On-chip analog PLL and digital PLL (VCO and phase detector) • Automatic adjustment of the free-running frequency of the VCO • Built-in microprocessor interface • On-chip 80-bit shift registers for Q-code buffering • Cyclic redundancy check on Q-code values • Audio output functions: monaural output, single-channel mute, left-right reverse, soft mute, –12-dB attenuation • 16-kbit RAM on-chip HD49235FS Pin Arrangement PDOUT1 VDD (A) AMPP AMPM AMPO AC VSS (A) PDOUT2 TEST1 MRST PLLCK NC VDD (D) NC NC NC NC NC NC NC NC NC NC NC QDSEL DSLCO DSLCI EFMI DEFCT TEST2 TEST3 UCKSL VDD (D) PWM MON MSTOP PW64 ROTD CLVS SLOCK 64 65 41 40 80 1 25 24 NC NC NC NC NC NC NC NC NC VSS (D) XCI XCO NC MCK TC1 UCK Rev.2, Aug. 1995, page 2 of 41 XRST CNIN SENS DATA CLK XLT VSS (D) OVFW S1 QOK QDATA CKEXT SUBOUT SUBCK CFCKP EMP BIDAT MUTE DAS CKX MPX C2F QMX DMX (Top view) HD49235FS Pin Description Pin No. Symbol 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 XRST CNIN SENS DATA CLK XLT VSS (D) OVFW S1 QOK QDATA CKEXT Name X (µ-com) reset Counter clock input Sensor Data Clock I/O* I I TO I I Connection Function Polarity H L Reset Microprocessor Microprocessor interface register reset Servo IC Pulse input for track counter Microprocessor Servo status output Microprocessor Data input for microprocessor interface Microprocessor Clock input for microprocessor interface Microprocessor Strobe input for microprocessor interface Digital ground On-chip RAM overflow signal output Microprocessor Subcode sync signal (with protection) Microprocessor Subcode CRC result output Microprocessor Subcode Q data output Microprocessor Clock input for Q data readout CD graphics CD graphics CD graphics Subcode data output for CD graphics Clock input for SUBOUT subcode readout Subcode frame synchronization signal (7.35 kHz at normal speed, synchronized with PLL) Emphasis on/off status output ON Digital audio interface output Microprocessor Audio mute input DAC or ROM decoder DAC or ROM decoder Serial data output for audio or ROM Strobe clock output for DAS signal Mute OFF OK NG Overflow X (µ-com) latch I VSS (digital) — RAM- overflow O Subcode sync O 1 Q-code OK Q-code data Clock-EXT O O I O SUBOUT Subcode out SUBCK CFCKP Subcode clock I C&D frame clock out O 16 17 18 19 20 EMP BIDAT MUTE DAS CKX Emphasis output Biphase date Mute O TO I Data serial out O Clock X O Rev.2, Aug. 1995, page 3 of 41 HD49235FS Pin Description (cont) Pin No. Symbol 21 MPX Name Multiplex I/O* O Connection DAC or ROM decoder Function Left/right channel switching signal output (44.1 kHz at normal speed, synchronized with DAS) C2 error flag output 4 × MPX clock signal (176.4 kHz at normal speed, synchronized with DAS) 2 × MPX clock signal (88.2 kHz at normal speed, synchronized with DAS) Microprocessor Clock output for microprocessor (8.5 MHz or 17 MHz) C1 error flag monitor pin Master clock output (33.8688 MHz) Open or VDD Crystal oscillator Crystal oscillator Not connected Crystal oscillator output Crystal oscillator input Digital ground Open Open Open Open Open Open Open Open Open Open Open Open Open Not connected Not connected Not connected Not connected Not connected Not connected Not connected Not connected Not connected Not connected Not connected Not connected Not connected Error Error Polarity H L 22 23 C2F QMX C2 flag O ROM decoder Quad multiplex O 24 DMX Double multiplex µ-com clock O 25 UCK O 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 TC1 MCK NC XCO XCI VSS (D) NC NC NC NC NC NC NC NC NC NC NC NC NC Test C1 flag Master clock O O No connection — X’tal clock output X’tal clock input VSS (digital) XO XI — No connection — No connection — No connection — No connection — No connection — No connection — No connection — No connection — No connection — No connection — No connection — No connection — No connection — Rev.2, Aug. 1995, page 4 of 41 HD49235FS Pin Description (cont) Pin No. Symbol 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 NC NC NC NC NC NC NC VDD (D) NC PLLCK MRST TEST1 Name I/O* Connection Open Open Open Open Open Open Open Function Not connected Not connected Not connected Not connected Not connected Not connected Not connected Digital power supply Open or VDD Open or VDD Open or VDD External RC circuit Not connected PLL clock output monitor Master reset of chip Test pin PLL auto-adjust phase detector output Analog ground External RC circuit External RC circuit External RC circuit External RC circuit Amplifier phase compensation pin PLL amplifier output PLL amplifier inverting input PL.


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