LC82151

CMOS LSI No. *5601 LC82151 Single-Chip Facsimile Controller Preliminary Overview The LC82151 is a facsimile controller that integrates the main functions required by facsimile systems on a single chip. The LC82151 includes a FAX modem with ADPCM and HDLC functions, image processing functions that can create high-quality binary image data without external memory, a CODEC accelerator, a CPU and CPU peripheral circuits, general-purpose I/O ports, and other functions. A facsimile system with excellent costperformance characteristics can be created easily by providing ROM and RAM. Modem – Group 3 FAX modem ITU-T V.29 (9600, 7200, and 4800 bps) ITU-T V.27ter (4800 and 2400 bps) ITU-T V.21ch2 (300 bps) – Simultaneous high/low-speed wait function – Short training function (ITU-T V.27ter only) – HDLC function (for all transmission speeds) – Synthesizer function – Caller ID function Bell 202 (1200 bps) ITU-T V.23 (1200 bps) – ADPCM function Encoding: 2, 3, or 4 bits Sampling frequencies: 9.6, 7.2, 4.8, and 3.6 kHz – RTC low-voltage backup – 5-V single-voltage power supply Functions CPU and peripheral circuits – High-speed 16-bit CPU (65C816) operating at 7.4 MHz – 16-MB program address space – CODEC accelerator – Two-channel DMA controller – Four 16-bit timers – 16-bit watchdog timer – TPH interface – Serial I/O interface – Parallel I/O: 10 to 43 pins Image processing – Processes 2048 pixels per line – Processing speed: 540 ns per pixel (maximum) – Built-in 8-bit A/D converter...