LC78628E Schematic ( PDF Datasheet ) - Sanyo Semicon Device

Teilenummer	LC78628E
Beschreibung	Compact Disc Player DSP with Built-in HDCD Decoder
Hersteller	Sanyo Semicon Device
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Gesamt 30 Seiten Ordering number : ENN6329 CMOS IC LC78628E Compact Disc Player DSP with Built-in HDCD Decoder ® Overview The LC78628E CMOS IC implements signal processing and servo control for compact disc players, laser disc players, CD-V, CD-I, and similar products. It provides functions for demodulation of the EFM signal from the optical pickup, deinterleaving, error detection and correction, and processing servo system commands issued by the system microprocessor. In addition to this basic CD functionality, it also provides HDCD (High Definition Compatible Digital) decoding functions and CD text functions. It also includes a built-in EFM PLL circuit. Functions • Full decoding and playback for discs encoded with the HDCD technique developed by Pacific Microsonics, Inc. • Slices the high-frequency input signal at an accurate level, converts it into the EFM signal, and generates a PLL clock with an average frequency of 4.3218 MHz performing a phase comparison with an internal VCO. • Accurately generates a reference clock signal and all necessary internal timings using an external 16.9344- MHz crystal. • Controls the disc motor speed using a frame phase difference signal created based on the reproduced clock signal and the reference clock. • Performs detection, protection, and interpolation for the frame synchronizing signal to assure stable data readout. • Demodulates the EFM signal, converting it to 8-bit symbol data. • After applying a CRC check to the subcode Q signal, outputs that data to the control microprocessor using serial data transfer. Package Dimensions Continued on next page. unit: mm 3174-QIP80E 0.8 0.8 64 65 [LC78628E] 23.2 20.0 0.35 1.6 41 40 0.15 80 1 25 24 2.7 21.6 0.8 SANYO: QIP80E ® HDCD® (High Definition Compatible Digital®) is a registered trademark of Pacific Microsonics, Inc. in the US and other countries. A license from Pacific Microsonics, Inc. is required to use this product. Sanyo Electric Co., Ltd. has acquired license for the use of HDCD technology from Pacific Microsonics, Inc. The following patents apply to the design of this product: USA: 5479168, 5638074, 5640161, 5808574, 5838274, 5854600, and 5872531. Australia: 669114 Other patents have also been applied for. Any and all SANYO products described or contained herein do not have specifications that can handle applications that require extremely high levels of reliability, such as life-support systems, aircraft’s control systems, or other applications whose failure can be reasonably expected to result in serious physical and/or material damage. Consult with your SANYO representative nearest you before using any SANYO products described or contained herein in such applications. SANYO assumes no responsibility for equipment failures that result from using products at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other parameters) listed in products specifications of any and all SANYO products described or contained herein. SANYO Electric Co.,Ltd. Semiconductor Company TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN 32400RM (OT) No. 6329-1/40 LC78628E D/A Converter Block Analog Characteristics at Ta = 25°C, VDD = LVDD = RVDD = XVDD = VVDD = 5 V, VDD3V = 3.3 V, VSS = LVSS = RVSS = XVSS = VVSS = 0 V. Parameter Symbol Conditions Total harmonic distortion LCHP, LCHN, RCHP RCHN; THD + N 1 kHz: 0 dB data input With the 20 kHz low-pass filter (internal AD725D) used. Dynamic range LCHP, LCHN, RCHP, RCHN; 1 kHz: –60 dB data input DR With the 20 kHz low-pass and A filters (internal AD725D) used. Signal-to-noise ratio LCHP, LCHN, RCHP, RCHN; 1 kHz: 0 dB data input S/N With the 20 kHz low-pass and A filters (internal AD725D) used. Crosstalk (separation) LCHP, LCHN, RCHP, RCHN; CT 1 kHz: 0 dB data input With the 20 kHz low-pass filter (internal AD725D) used. Note: Measured in the normal speed playback of the Sanyo 1-bit D/A converter reference circuit. Ratings min typ 0.009 83 86 98 103 96 98 Unit max 0.012 % dB dB dB RWC CQCK COIN tSU tWH tHD tRWC tWL tSU tHD Figure 1 Command Input A12797 WRQ CQCK SQOUT RWC tWH tWL tSQE tRAC Figure 2 Subcode Q Output tWH A12798 No. 6329-6/40 6 Page LC78628E 3. VCO monitor — Pin 21: PCK This pin monitors the 4.3218 MHz (on average) signal created by dividing the VCO frequency. In 2 × speed playback mode, the frequency becomes 8.6436 MHz. 4. Sync detection monitor — Pin 22: FSEQ When the frame sync (a positive sync signal) read from the EFM signal by PCK and the timing (interpolated sync signal) generated with a counter match, this pin outputs a high level. Thus this pin functions as a sync detection monitor. Note that it holds the high level for a single frame. 5. Servo command function — Pin 64: RWC, pin 66: COIN, pin 67: CQCK, pin 18: PCCL The LC78628E instructions can be executed by setting RWC high and inputting the command to COIN in synchronization with the CQCK clock. Note that the command is executed starting at the fall of the RWC signal. Focus start Track jump Muting control Disc motor control Other control commands - - - - - - One-byte commands Track check- - - - - - - - - - - - - - - - - - - - - - - - - - - - Two-byte command (RWC set twice) General-purpose port I/O, E/D settings Digital attenuator settings HDCD control register settings - - - - - - Two-byte commands (RWC set once) • One-byte commands RWC CQCK COIN LSB MSB A12805 • Two-byte command (RWC set twice) RWC CQCK COIN LSB MSB Command ($F0, $F8) LSB MSB Data ($008 to $FE) or command ($FF) A12806 No. 6329-12/40 12 Page
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Teilenummer	Beschreibung	Hersteller
LC78628	Compact Disc Player DSP with Built-in HDCD Decoder	Sanyo Semicon Device
LC78628E	Compact Disc Player DSP with Built-in HDCD Decoder	Sanyo Semicon Device

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