LC82151 General Description
LC82151 Features
• 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 (Includes a sensor signal delay function.)
Sensor drive circuit (Supports CCDs and all major CIS devices.)
Distortion correction (White distortion: 8-pixel averaging correction, black correction: Allows the black correction subtraction data to be set.)
g-correction (Supports user-defined correction curves.)
Simple binary conversion processing (fixed threshold and density-adaptive threshold)
Halftone processing error diffusion method (64 levels)
Image reduction (decimation, fine black line retention, and fine white line retention)
• 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
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