GENERAL DESCRIPTION
The SAA7385 is a high integration ASIC that incorporates all of the digital electronics necessary to connect a CD decoder to a SCSI host. An 80C32 microcontroller and a 53CF94 SCSI controller are embedded in the ASIC. The following functions are supported:

• Input clock doubler
• Block decoder
• CRC checking of Mode 1 and Mode 2, Form 1 sectors
• Red book audio pass through to SCSI
• Buffer manager
• Third-level error correction
• Sub-code and Q-channel support
• Dedicated S2B interface UART
• Embedded 80C32 microcontroller
• Embedded 53CF94 SCSI controller.

FEATURES
General
• Single chip digital solution for an 8 × speed CD-ROM controller chip
• 10 Mbytes/s NCR53CF94 equivalent SCSI controller included
• High-speed 80C32 microcontroller with 256 × 8 scratch-pad SRAM included
• High performance CD-ROM interface logic
• 128 pin QFP package.

53CF94 SCSI controller
• Separate clock input to allow operation up to the maximum 10 Mbytes/s
• Fast synchronous SCSI-2 compatible
• 24-bit transfer counter for single transfers up to 16 Mbytes
• High-speed 16-bit DMA interface to the buffer manager DRAM
• On-chip 48 mA SCSI drivers
• Software compatible with members of the 53C90 family
• Allows for SCAM support.

80C32 high-speed microcontroller
• 33.87 MHz full system speed operation
• Three timers/event counters
• Programmable full duplex serial channel
• Eight general purpose microcontroller I/O pins
• External program ROM.
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