HD49235

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 Connectio...