LC895925

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. Buffer RAM sizes between 1 and 32 megabits (using 16bit DRAMs) User control over sizes of CD main channel, C2 flag, and subcode areas in buffer RAM Built-in batch transfer function for transferring entire CD main channel, C2 flag, or subcode area in a single operation 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×. 2. Using a SCSI master clock of 17.2872 MHz with speeds up to 4×. Features CD-ROM decoding/encoding complete with error detection and error correction Subcode decoding/encoding complete with error correction ATIP decoding and CRC checking for both encoding and decoding CLV servo control using ATIP data during encoding CIRC code insertion and EFM modulation during encoding Support for PCA random EFM output during encoding Support for CD-ReWritable (CD-RW) Write Strategy signal output Access to buffer RAM from microcontroller via LC895925 Built-in SCSI interface Speeds of 12× for decoding and 4× for encoding — Frequencies Decoding: 17.2872 MHz Encoding: 17.2872 MHz without Write S...