l Highly integrated scanner controller chip (2-in-1; Scanner Controller and USB 2.0 Interface)
l USB 2.0 High Speed (480Mbit) compliant
l Designed for sheetfed, flatbed and transparency scanners
l Embedded RISC CPU for USB protocol handling
l Support MCU with SPI interfaces for special application in 208-pin package
l Support single AFE for dual head scanning
l Support two chips application for fast dual head scanning
l Supports external 24Kbytes flash ROM or internal 24Kbyte mask ROM
l Firmware online-download for external flash ROM programming
l 12MHz low frequency clock input for better EMI
l Adjustable working clock of scanner controller for different usage (12M, 24M, 30M, 40M, 48M, 60MHz)
l Supports linear or stagger CCD, such as NEC, Toshiba or Sony CCD
l Available sensor types: 600, 1200, 2400, 3200, 3600, 4800 and 9600 dpi color CIS or CCD
l Multi-TG control for CCD (separately controls the R/G/B exposure time)
l Shutter-control for CCD (separately controls the R/G/B exposure time)
l Supports two scanning types: pixel-by-pixel (pixel rate), line-by-line (line rate)
l Support 48-bits color, 16-bits gray and 1-bit line-art
l “True gray” with R, G and B weightings
l 16 bits white/dark shading and 16 bits Gamma correction
l Supports RS232 interface for special applications
l Supports EEPROM (93C46) interface for special applications
l Supports ADF (Auto-Document-Feeder) function with document, ADF and cover sensors
l Supports auto-ADF with automatically feeding in, automatically scanning and automatically feeding out
l Lines packing for stagger CCD or R/G/B line differences
l Fine CDS sampling adjustment to avoid the digital noise influence (8.33ns adjustment)
l Digital average and hardware deletion for various resolutions
l Hardware deletion for various resolutions (from 9600~1dpi with 1dpi decrement)
l Supports 1M*16, 4M*16, 8M*16, 16M*16 and 32M*16 SDRAM
l Supports up to 1 G bits size SDRAM (implements two SDRAM)
l Supports 5 acceleration/deceleration motor tables for high speed motor moving and wall hitting protection
l Supports controllable bipolar motor in full, half, quarter and eighth steps moving
l Supports controllable unipolar motor in full and half steps moving
l Supports V-reference automatic control for motor driver Ics
l Build-in PWM control phase for unipolar motors
l Programmable dummy lines to resolve start/stop (discontinuous) problem
l Watchdog protection for lamp, motor and ASIC
l Lamp time-out (sleeping) control
l Supports 22 GPIO pins and 6 GPO pins for 128-pin package
l Supports 27 GPIO pins and 6 GPO pins for 208-pin package
l Supports PWM outputs for flatbed/transparency lamp control with programmable duties and frequencies
l Supports LED blinking
l Supports back-scanning
l Supports multi-film scanning
l Support two 1-channel CIS sensors for duplex scanner using a 3-channel or 2-channel AFE
− ASIC controls the LED_R, LED_G and LED for upper and lower two CIS sensors at the same time
− ASIC controls CIS SP and CIS clock at the same time
− ASIC latches the two channel image data when using 3-channel AFE or a 2-channel AFE
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