CL-CR3470 Datasheet | Cirrus Logic

FEATURES General - Single-chip integration of CD-ROM decoder, CD-ROM encoder, CIRC encoder, EFM modulator, ATIP decoder, buffer manager, and interface to SCSI protocol ICs - DVD port (CL-CR3475 only) - Highly automated and high-performance CD-Recordable formatter - High-performance CD-ROM decoder - Designed for easy and efficient firmware programming - High-performance built-in ATAPI interface - Fully patible with the ATAPI Specification SFF-8020 - Automatic power-down interfaces when idle - 144- and 176-pin LQFP packages available - Built-in clock synthesizer s CD-ROM Decoder - Supports CD-ROM, CD-I, and CD-DA™ (CD-Digital Audio) formats - Supports various pact disc DSP (digital signal processor) controllers - Supports disc speeds up to 65-MHz MCLK - CD speeds up to 40x (cont.) ATAPI CD-R/RW Encoder/Decoder OVERVIEW The CL-CR3470 and CL-CR3475 are single-chip, highperformance, highly integrated ATAPI interface devices for the CD-R/RW (CD-Recordable/CD-Rewritable) market. The CL-CR3470/CR3475 integrates CD-ROM decoder, CIRC encoder, EFM modulation, ATIP decoder, buffer manager, and ATAPI interface logic. In addition to its CD-Rewritable capability, the CL-CR3475 features a DVD port enabling drive manufacturers to develop a drive that reads DVD, CD-ROM, CD-R, and CD-RW. The CL-CR3470/CR3475 supports up to 40x read and 10x record disc speeds, allowing customers to preserve all CD-R/E encode/decode electronics and firmware as the disc speed requirements increase. All write methods are supported by the CL-CR3470/CR3475 disc-at-once, track-at-once, packet recording, and (cont.) System and Functional Block Diagram LOCAL MICROCONTROLLER ROM/RAM ATAPI BUS MICROCONTROLLER INTERFACE ATAPI BUS INTERFACE CD-ROM ENCODER CD-RW FORMATTER BUFFER MANAGER CL-CR3470/CR3475 CD-ROM DECODER DVD PORT CIRC ENCODER EFM MODULATOR ATIP...