W88611P/W88631F
VCD 4X RF AMP/DIGITAL SERVO & DSP
W88611P
GENERAL DESCRIPTION
W88611P is a CMOS IC developed for VCD and CD
Player use. It includes a RF amplifier, tracking error
amplifier, focus error amplifier, etc..., on a single chip.
FEATURES
• RF amplifier, tracking error amplifier, focus error
amplifier, APC circuit, and reference amplifier
included on a single chip
• On-chip RF output signal automatic gain control
(AGC) and peak to peak envelop detection
• Single 5V power supply
• 32-pin PLCC package
W88631F
GENERAL DESCRIPTION
W88631F provides CD signal processing decoding
functions and all servo functions needed in a three-spot
CD system. This chip has a high degree of integration to
reduce the number of external components required.
FEATURES
• 1X, 2X and up to 4X speed modes are supported
• Chip clock 33.8688 MHz
• Serial microcomputer interface
• Fully digital servo processing (focus, tracking,
sledge, spindle servo)
• Fully automatic adjustment (focus / tracking gain,
offset, balance)
• Wide range of adjustable servo characteristics
possible
• Built-in access procedure
• Focus automatic start up
• Trackloss, Shock, Defect, Dropout detection
• Fully digital data recovery (digital equalizer, data
slicer, PLL)
• Wide data capture range (+/- 1.5 channel clock, up to
4X speed)
• Wide frame jitter margin (+/- 4 frames) with built-in
deinterleaved SRAM
• EFM protected demodulator
• Digital spindle motor control by CLV
• Error correction capabilities
• Subcode data processing
• Audio data processing, Concealment strategy, digital
attenuation and soft mute
• Audio data output interface
--- standard EBU digital audio output interface
--- D/A converter interface and CD-ROM interface
• Extended general I/O port simplifies system design
• 100-pin QFP package
APPLICATIONS
• VCD player
• SVCD player
• Multimedia system
Following figure shows a typical VCD/SVCD connection
diagram of W88611P/W88631F
Sony KSS213
Servo Board
Digital Servo & DSP
W88631F
RF Amplifier
W88611P
Motor Driver
VCD/SVCD
MPEG Board
•MPEG Decoder
•MCU
•TV Encoder
•Audio DAC
Winbond Corporate Headquarters
Tel : 886-3-5790666
Fax : 886-3-5796139
Taipei Sales Office
Tel : 886-2-27190505
Fax : 886-2-27197502
Winbond Electronics North America Corp.
Tel : 1-408-943666
Fax : 1-408-9436668
Details are subject to change without notice. All trademarks are property of their respective holders.
Winbond Electronics H.K. Ltd.
Tel : 852-27513100
Fax : 852-27552064
Jan 1999