AMIS-721250: Contact Image Sensor
CLKpw
CLKpw
CLKp
Data Sheet
CLK
Thold
Tset
50%
CLKrt
CLKft
GBST
GBSTrt
GBSTft
Prt
90%
VOUT
Pft
10%
SI/SO
SI/SOrt
SI/SOft
Figure 6: Rise and Fall Times for both the 600/1200dpi Modes
CLK
Tset
GBST
Tset
Thold
1
Thold
2
55
56
57
58
Video Signal (Vout)
1
2
3
108 109 110 111 112 113 114 115
Figure 7: Timing of GBST-to-first Pixel of the First Sensor for both the 600/1200dpi Modes
Figures 8 and 9 show the timing of the SI/SO, which comes out in line with the 324
th
pixel for the 600dpi mode and with the 668
th
pixel
for the 1200dpi mode. The SO from the first sensor enters as the SI clock of the second and subsequent sensors; hence all subsequent
sensors will start their register scan after each of the preceding sensors completes its scan.
th
th
The last active pixel of each sensor is the 344 pixel for the 600dpi mode and 688 pixel for the 1200dpi mode.
AMI Semiconductor
– Dec. 05, M-20496-004
www.amis.com
9
AMI [ AMI SEMICONDUCTOR ]
