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GS3000 Dataheets PDF



Part Number GS3000
Manufacturers SSHK
Logo SSHK
Description One chip servo signal processor
Datasheet GS3000 DatasheetGS3000 Datasheet (PDF)

GS3000 Specification Product specification MODEL: GS3000 NAME: One chip servo signal processor for 2-Digit & 4-Digit LED/LCD CD player VERSION: 0.14 Shin-Nichi Electronic Device (H.K.) Ltd. 1 GS3000 Specification Table of Contents Chapter 1 Product Overview ... 3 Features.

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GS3000 Specification Product specification MODEL: GS3000 NAME: One chip servo signal processor for 2-Digit & 4-Digit LED/LCD CD player VERSION: 0.14 Shin-Nichi Electronic Device (H.K.) Ltd. 1 GS3000 Specification Table of Contents Chapter 1 Product Overview ...................................................................................................................... 3 Features.................................................................................................................................................. 3 Block Diagram....................................................................................................................................... 5 Pin Descriptions..................................................................................................................................... 7 Option Table ........................................................................................................................................ 10 Electrical characteristics (Digital System) ........................................................................................ 11 Electrical Characteristics (Analog system) ....................................................................................... 12 Electrical Characteristics (Analog system) -- Con't ......................................................................... 13 Electrical Characteristics (Analog system) -- Con't ......................................................................... 14 Chapter 2 System Composition................................................................................................................ 15 Chapter 3 Mechanical Data ...................................................................................................................... 33 Shin-Nichi Electronic Device (H.K.) Ltd. 2 GS3000 Specification Chapter 1 Product Overview The GS3000 is a one-chip servo signal processor complete with built-in pre-servo amplifier for application to 2-Digit & 4-Digit LED/LCD compact disk players. It also can meet EuP requirement. Features Pre-sevo amplifier RF signal generator generates EFM signal from signals being sent from the pickup. RFAGC circuit is contained therein. Furthermore, this generator enables to set the equalizer to any optional value. FE and TE signal generator contains therein gain balance adjust circuits. Offset adjustment is individually available for each of AC, BD, E and F. This amplifier contains therein asymmetric correction circuit. This amplifier contains therein APC circuit intended for automatic control of laser power. This amplifier contains therein DISC defect detection circuit. Also, this amplifier contains therein bias voltage generation circuit. This pre-servo amplifier corresponds flexibly to playback of CD-RW. Simultaneous power-down is available for all of the pre-servo amplifier circuits. But the bias voltage generator only can be started independently in advance. Digital Servo Digital servo can control focus, tracking and sled filter characteristics according to control command. Servo unit contains therein the function of automatically adjusting offset, balance and gain for focus and tracking. Broadly flexible digital spindle servo mounted in this processor selects automatically CLV mode by its sequencer. Track jump sequencer enables processing of jump-start and end by one command without applying any load to microcomputer. In addition, this sequencer enables jumping at any number of tracks. Shin-Nichi Electronic Device (H.K.) Ltd. 3 GS3000 Specification Error corrector (ECC) Corrector contains therein de-interleave function, C12 and C24 major error code detection, correction and flag processing circuits. Corrector contains therein 16Kbit SRAM so as to enable absorbing of jitter equivalent to ±4 frames. Corrector corresponds to CD-DA and CD-ROM modes. Audio output unit Audio output unit contains therein ×8 over-sampling digital filter and secondary 1bit DAC. Audio output data is output as analog data through secondary analog low-path filter. Digital filter provides the following functions. Digital attenuator; Digital soft mute; Infinity zero detection and mute; Digital bus boost filter; Digital de-emphasis filter. System Configuration CD processor and system controlling MCU: GS3000 5CH driver: SA5888 CD mechanism match: Lian Zhong, Sanyo Display: 2-Digit LCD/LED or 4-Digit LCD/LED Tuner & Pre-scaler for Frequency Counter Tuning System: SA2111+CS9255 Playback Functions of Audio CD Compatible Disc: CD, CD-R, CD-RW Play/Pause Stop Next/FF and Previous/FR search Repeat 1/All Play Random Play Program Memories Up to 20 Tracks Shin-Nichi Electronic Device (H.K.) Ltd. 4 Block Diagram GS3000 Specification Shin-Nichi Electronic Device (H.K.) Ltd. 5 Pin Assignment GS3000 Specification E VBIAS BD AC AVDD1 EQO RFI CAGC TEN TEO SC TZCRFM RFRPRFM AGND3 RDACO VCDAC LDACO AVDD3 DATA DCLK F AGND1 FEN FEO PKC BTC PD LD ASY AVDD2 PCO FCO AG.


AD9255 GS3000 CS1698


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