Ordering number : EN*5784
CMOS LSI
LC895925
Signal Processing LSI for CD-R Drives
Preliminaly
Overview
The LC895925 provides the following signal processing
functions for CD-R drives: CD-ROM decoding/encoding
(complete with ECC processing for the former), subcode
decoding/encoding, CD encoding, ATIP decoding, CLV
servo, and SCSI interface registers.
鈥?Buffer RAM sizes between 1 and 32 megabits (using 16-
bit DRAMs)
鈥?User control over sizes of CD main channel, C2 flag,
and subcode areas in buffer RAM
鈥?Built-in batch transfer function for transferring entire
CD main channel, C2 flag, or subcode area in a single
operation
鈥?Built-in multiblock transfer function for transferring
multiple blocks in a single operation
Notes:
1. Using a SCSI master clock of 20 MHz with speeds up
to 8脳.
2. Using a SCSI master clock of 17.2872 MHz with
speeds up to 4脳.
Features
鈥?CD-ROM decoding/encoding complete with error
detection and error correction
鈥?Subcode decoding/encoding complete with error
correction
鈥?ATIP decoding and CRC checking for both encoding
and decoding
鈥?CLV servo control using ATIP data during encoding
鈥?CIRC code insertion and EFM modulation during
encoding
鈥?Support for PCA random EFM output during encoding
鈥?Support for CD-ReWritable (CD-RW) Write Strategy
signal output
鈥?Access to buffer RAM from microcontroller via
LC895925
鈥?Built-in SCSI interface
鈥?Speeds of 12脳 for decoding and 4脳 for encoding
鈥?Frequencies
Decoding: 17.2872 MHz
Encoding: 17.2872 MHz without Write Strategy
support
69.1488 MHz with Write Strategy
support
鈥?Transfers speeds of 10 megabytes/s (synchronous) and 5
megabytes/s (asynchronous) with 16 80-ns DRAMs *1
Package Dimensions
unit: mm
3153A-QFP160E
[LC895925]
SANYO: QIP160E
SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-0005 JAPAN
D1997RM (OT) No. 5784-1/7
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