Overview

The SANYO LC8955 is a stereo/mono replay IC for CD-I format ADPCM data. In addition to an ADPCM decoding circuit, the LC8955 also incorporates a DMA interface, buffer RAM interface and a D/A converter serial interface. The LC8955 interfaces directly with the SANYO LC8951 Real-time Error-correction and Host Interface Processor, allowing a CD-I replay system to be configured easily. The LC8955 is designed to operate with a host microprocessor which sets the operating mode. It operates from a single 5V supply, and is available in 80-pin plastic QIPs.

Features

• Real-time ADPCM decoder IC.

• Direct interface to SANYO’s LC8951 error-correction IC for high-speed data transfer.

• Data transfer under program or DMA control.

• Independent data and control busses in auto-request transfer.

• 8K byte external static RAM interface.

• Buffers up to 64 ADPCM sound groups in external RAM.

• DAC interface circuit.

• 80-pin plastic QIP.