參數(shù)資料
型號(hào)： GL646USB
廠商： Electronic Theatre Controls, Inc.
英文描述： Three-in-one Scanner Controller for USB and 1394
中文描述： 三功能于一身的掃描儀控制器USB和1394
文件頁(yè)數(shù)： 13/43頁(yè)
文件大?。?/td> 280K
代理商： GL646USB
Revision 1.3
Mar.22 2001
-12-
GL646USB
6. Application Description
6.1. System Clock
Internal PLL or external clock input.
A. PLL: 12MHz input , 24 or 32 MHz output to internal system and 48MHz output to internal USB controller.
B. USB2.0 supply: External USB2.0 controller support 24,30,48 MHz to three in one ASIC.
C. Crystal supply: depend on crystal input (receptible frequency of ASIC: 12 to 48 MHz)
6.2. Pixel Clock
A. Normal Mode(three line in):
a. 24 system clock/pixel
b. Chunky color scan(three line in) or fine gray scan for CCD.
B. Fast Mode(one line in) :
a. 9,12 or 15 system clock/pixel three type.
b. Planar color scan (one line in) or Monochrome scan.
c. Fast gray or black & white scan for CCD.
d. Planar color(one line in) for CCD line by turns or line by line.
e. Planar color(one line in),gray, true gray or black & white scan for CIS.
Note : Chunky Color is R1G1B1,R2G2B2,R3G3B3,………
Planar Color is R1,R2,R3,…..;G1,G2,G3,…….;B1,B2,B3,……..
CCD : Chunky color or planar color.
CIS : Planar color
6.3. Scan Speed
A. System clock = 24 MHz :
a. Normal Mode: Chunky color or fine gray scan.
24x41.666ns/pixel = 1.0us/pixel
(1). 600dpi : 5.4ms/line
(2). 1200dpi : 10.4ms/line
b. Fast Mode: Planar color, fast gray or black&white scan.
9x41.666ns/pixel = 0.375us/pixel
12x41.666ns/pixel = 0.5us/pixel
15x41.666ns/pixel = 0.625us/pixel
(1). 600dpi : 2.025~3.375ms/line
(2). 1200dpi : 4.05~6.75ms/line
B. System clock = 32MHz :
a. Normal Mode :
24x31.25ns/pixel = 0.75us/pixel
(1). 600dpi : 4.05ms/line
(2). 1200dpi : 8.1ms/line
b. Fast Mode :
9x31.25ns/pixel = 0.281us/pixel
12x31.25ns/pixel = 0.375us/pixel
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