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參數(shù)資料
| 型號： | CS3712 |
| 英文描述： | Integrated ATAPI DVD Drive Manager |
| 中文描述： | 集成的ATAPI DVD驅(qū)動器管理器 |
| 文件頁數(shù)： | 2/26頁 |
| 文件大?。?/td> | 728K |
| 代理商： | CS3712 |
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C
ONFIDENTIAL
DS588PP1 -
rev
0.4 April 11, 2002
Copyright
2002 Cirrus Logic Inc.
P
RELIMINARY
D
RAFT
www.cirrus.com
Features (Cont.)
Overview (Cont.)
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
Data Channel
Digital PLL provides flexible control of center
frequency to support improved access times
Channel quality provided for parametric calibration
Channel data rates up to 210 Mbits/sec.
Flexible and error-tolerant channel sync mark
windowing
SCP (Servo Control Processor)
Includes a servo control processor for focus, tracking,
sled, and spindle servo loops
Significantly faster capture for focus and tracking
Effective in a wide range of parameter variations
Superior response to defects, shock, and vibration
Supports both CLV (constant linear velocity) and CAV
(constant angular velocity) modes
ECC
Real-time DVD ECC error correction
Real-time CD-ROM layered ECC error correction with
programmable number of sets of P-word and Q-word
corrections per sector (up to 64 total)
C1/C2 ECC and de-interleaving
Real-time subcode error correction in CD-DA
(compact disc digital audio) mode
Decoder
Supports hardware streaming operation
DVD navigation support
Supports ADB (audio data buffering)
Automatic target sector header search
Hardware sector header validity check
Supports high-speed Intel
- and Motorola
-type
microcontrollers
Supports nonmultiplexed and multiplexed address
and data buses
Host Interface
True real-time hardware/software ATAPI compatibility
Supports Ultra DMA: capable of synchronous DMA
data rates up to 33.3 Mbytes/sec.
Supports ATA PIO modes 3 and 4 transfers without
IOCHRDY
Host Interface (cont.)
Supports DMA modes 1 and 2
Hardware implementation of:
- ATAPI packet command
- ATAPI reset command
High-Performance
PIO/DMA ATAPI bus transfer rate:
- PIO modes 3 and 4, multiword DMA modes 1
and 2, and singleword DMA modes 1 and 2
Data transfer rate:
- CD-ROM CLV –maximum 32
×
data rate with
25% overspeed capture
- CD-ROM CAV – maximum 40
×
OD data rate
- DVD-ROM CLV – maximum 6
×
data rate with
33% overspeed capture
- DVD-ROM CAV – maximum 8
×
OD data rate
- DVD+R CLV – max. 4x read
Buffer bandwidth:
- 55 Mbytes per second with 16-bit DRAM
Buffer Manager
Dual-port circular buffer control with access-priority
resolver
Supports streaming operation
Direct addressing of up to 4 Mbytes of DRAM
Supports variable buffer segmentation
Programmable timing control for SDRAM
Host overrun control
Supports 16-bit SDRAM
The CL-CS3712 servo control processor implements the
focus, tracking, sled, and spindle servo loops. An ADC is
provided to convert the focus and tracking error signal.
The outputs to the power drivers are linear DACs.
The CL-CS3712 supports real-time DVD ECC, CD-ROM
C1/C2, and layered ECC correction, which is
programmable for up to 64 P- and Q-word corrections per
sector. It also supports subcode R/W correction in CD-
DA (compact disc digital audio) mode.
The buffer manager controls the flow of data from the data
channel, through the ECC, and to either the host interface
or the serial audio channel. Data is stored and retrieved in
the external buffer memory using interleaved access
cycles. The buffer memory is implemented with SDRAM
devices. Up to 4 Mbytes of SDRAM can be directly
addressed by the CL-CS3712.
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