Overview

The LC895994 is a CD-R LSI that provides a wide range of functions including CD-ROM decoding (including ECC) and encoding, subcode Q encoding (CRC addition) and decoding, CD encoding, ATIP decoding and CLV servo, and an IDE interface that includes the register block.

Features

• ECC and EDC correction/addition for the CD-ROM

data (during decoding and encoding)

• 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

LC895994

• Built-in ATAPI (IDE) interface

• Speeds of 12× for decoding and 4× for encoding

— Frequencies

Decoding: 17.2872 MHz

Encoding: 17.2872 MHz without Write Strategy

support

69.1488 MHz with Write Strategy

support

• IDE Transfer rate: 13.3 MB/s when using 16-bit data

path 80-ns DRAM chips

• Buffer RAM sizes between 1 and 32 megabits (using 16-

bit DRAMs)

• User control over sizes of CD main channel, C2 flag

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