GENERAL DESCRIPTION
The DSC SAA8122E/C1 is a high performance, low power, single-chip MIPS based microprocessor which is dedicated to image processing and compression.

FEATURES
• Support a wide range of CCD (VGA,SVGA,QGA,XGA,EQGA)
• Perform an advanced RGB to YUV conversion
• Support smart measurement unit to speed up the control loop (Focus, auto white balance,...)
• Support a wide range of LCD and TV format (NTSC and PAL) with text re-insertion features
• Support an embedded JPEG encoder/decoder unit.
• MIPS PR3001 CPU, running in a frequency range from 12 to 28 MHz.
• PRISC compatible PI-bus architecture, interrupt, power management, clock and reset architectures.
• Support a dedicated video bus and SDRAM memory for picture storage
• Support for ROM, DRAM,SRAM, flash and PC Card (Compact Flash and SSFDC).
• Integrated general purpose peripherals like a USB,FIR,UART, timers, an I2C transceiver, ADC converters, RTC and IO ports.

EXTERNAL UNTERFACES
• a dedicated interface to IEEE 1394 devices (such as Philips’ PDI 1394 chip-set)
• two UART (RS-232) data ports with DMA capabilities (≤ 187.5kbit/s) including hardware flow control RxD, TxD, RTS, CTS for modem support
• 32 general purpose, bidirectional I/O interface pins, the first 8 bits may also be used as interrupt inputs
• two PWM output (8 bit resolution)

CPU relqted features
• a 32-bit PR3001 core
• 1 KB (kilo byte) data cache and 4 KB instruction cache
• a programmable low-power mode, including wake-up on interrupt
• a memory management unit (TLB: translation lookaside buffer)
• two built in 24-bit general purpose timers and one 24-bit watchdog timer in coprocessor zero two built in 24-bit general purpose timers
• a real-time clock unit (active in sleep mode)
• an on-chip 8 KBytes SRAM for storing code which needs fast execution