GL848 datasheet(7/85 Pages) GENESYS

7 / 85 page

GL848 High Speed USB2.0 2-in-1 Scanner Controller With Fast ADF

Page 7

CHAPTER 2

FEATURES

Highly integrated scanner controller chip (2-in-1; Scanner Controller and USB 2.0 Interface)

USB 2.0 High Speed (480Mbit) compliant

Designed for sheetfed, flatbed and transparency scanners

Designed for self-power and bus-power application

Embedded RISC CPU for USB protocol handling

Support single AFE for dual head scanning

12MHz low frequency clock input for better EMI

Adjustable working clock of scanner controller for different usage (12M, 24M, 30M, 40M, 48M, 60MHz)

Supports linear or stagger CCD, such as NEC, Toshiba or Sony CCD

Available sensor types: 600, 1200, 2400, 3200, 3600, 4800 and 9600 dpi color CIS or CCD

Multi-TG control for CCD (separately controls the R/G/B exposure time)

Shutter-control for CCD (separately controls the R/G/B exposure time)

Supports two scanning types: pixel-by-pixel (pixel rate), line-by-line (line rate)

Support 48-bits color, 16-bits gray and 1-bit line-art

“True gray” with R, G and B weightings

16 bits white/dark shading and 16 bits Gamma correction

Supports RS232 interface for special applications

Supports EEPROM (93C46) interface for special applications

Supports ADF (Auto-Document-Feeder) function with document, ADF and cover sensors

Supports auto-ADF with automatically feeding in, automatically scanning and automatically feeding out

Lines packing for stagger CCD or R/G/B line differences

Fine CDS sampling adjustment to avoid the digital noise influence (8.33ns adjustment)

Digital average and hardware deletion for various resolutions

Hardware deletion for various resolutions (from 9600~1dpi with 1dpi decrement)

Supports 1M*16, 4M*16, 8M*16, 16M*16 and 32M*16 SDRAM

Supports up to 1 G bits size SDRAM (implements two SDRAM)

Supports 5 acceleration/deceleration motor tables for high speed motor moving and wall hitting protection

Supports controllable bipolar motor in full, half, quarter and eighth steps moving

Supports controllable unipolar motor in full and half steps moving

Supports V-reference automatic control for motor driver Ics

Build-in PWM control phase for unipolar motors

Programmable dummy lines to resolve start/stop (discontinuous) problem

Watchdog protection for lamp, motor and ASIC

Lamp time-out (sleeping) control

Supports 21 GPIO pins and 5 GPO pins for I/O control

GL848 Datasheet(PDF) 7 Page - GENESYS LOGIC