
DS587PP1 -
rev
0.1 April 11, 2002
Copyright
2002 Cirrus Logic Inc.
C
ONFIDENTIAL
P
RELIMINARY
D
RAFT
www.cirrus.com
Overview
Features
Block
Diagram
Integrates all required components for a complete AVI
or ATAPI interface DVD drive (front-end) electronics
solution:
- RF amp
- Data channel
- Servo control processor
- DVD ECC (error correction code)
- CSS (content scramble system)
- ATAPI decoder
Reads DVD+RW, DVD-ROM, DVD-RW, CDDA, CD-
ROM, CD-R, CD-RW, VCD, and DVCD discs
Direct Audio/Video interface for DVD player applications
ATAPI interface for game console and DVD loader
solutions
High-performance controller supports DVD disc speeds
up to 8x and CD-ROM disc speeds up to 40x
Partial Response Maximum Likelihood (PRML) data
channel
Servo Control Processor (SCP) on-chip
DVD navigation support
208-pin LQFP/EPAD packages
RF Amp
Provides laser power control
Gain control in digital domain
Generates focus error and tracking signal
Provides RF signal for the data channel
Bypass for external RF amp applications
The CL-CR3710 is Cirrus Logic’s high-integration, high-
performance ATAPI DVD drive manager. It integrates all
required components for a DVD loader for DVD players,
game consoles, and DVD-ROM drives. The CL-CR3710
includes an RF amp, servo control processor, data
channel, DVD ECC, CSS authorization, CD-ROM decoder,
and ATAPI interface.
The CL-CR3710 can be configured with an audio DAC
(digital-to-analog converter), external buffer memory (8- or
16-bit DRAM), a local micro-controller with its RAM and
ROM, and power drivers to create a complete DVD-ROM
electronics solution.
The CL-CR3710 supports DVD disc speeds up to 8x and
Ultra DMA host speeds up to 33.3 Mbytes/sec.
The RF signal is over-sampled by a high-speed ADC
(analog-to-digital converter). The timing loop is closed in
the digital domain with variable decimation and
interpolation used to provide the output samples to the
data recovery logic. A channel-quality logic circuit is
provided to allow parametric calibration.
The CL-CR3710 data channel supports partial response
maximum likelihood (PRML) data acquisition, providing
state-of-the-art data recognition in a noisy environment,
coming from the pick-up head.
CL-CR3710
TO POWER
DRIVERS
FROM
SENSORS
LOCAL
MICROCONTROLLER
ATAPI OR
MPEG
SAMPLE
RATE GEN
SPINDLE
CONTROL
HOST
INTERFACE
LAYERED ECC
& DVD ECC
C1/C2 ECC &
DE-INTERLEAVE
8/16
DEMOD
EFM
DEMOD
BUFFER
MEMORY
CHANNEL
QUALITY
BAC
CAPTURE
FROM
IV AMP
DPLL &
DATA CHNL
RF
ADC
LOW PASS
FILTER
SUM &
VGA
DACS
VGA
ADCS
SCP
SYNTHESIZER
RAM
SUB-Q READ
HEADER
SEARCH &
CHECKS
BUFFER
MANAGER
CSS
AUTHENTIFICATION
NAVIGATION
CSS
DESCRAMBLE
SUBCODE
DE-INTERLEAVE
CL-CR3710
MICRO
INTERFACE
Integrated AVI/ATAPI DVD
Drive Manager Datasheet