TCD2905D Datasheet, PDF (14/22 Pages) Toshiba Semiconductor – CCD Image Sensor CCD (charge coupled device)

TCD2905D
Application Note
The TCD2905D can be operated in two modes: Normal Readout Mode and Even Line Readout Mode.
Each mode is selected by SW terminal.
SW
Mode
H Normal Readout Mode
L Even Line Readout Mode
Application Example
1200 DPI/A4 Reading
600 DPI/A4 Reading
Normal Readout Mode
In Normal Readout Mode, the dummy and signal outputs in odd and even lines are read out. This mode provides
1200 DPI/A4 resolution. The timing for this mode is shown in page 8/21, 9/21 and 10/21.
Even Line Readout Mode
In Even Line Readout Mode, the dummy and signal outputs in even lines are read out. The dummy and signal
outputs in odd lines cannot be read out in this mode. This mode provides 600 DPI/A4 resolution. Timing examples
for 600 DPI/A4 reading using this mode are shown in page 15/21, 16/21 and 19/21 for reference.
In this mode, signal charges of adjacent pixels in even line can be merged at an output stage capacitor using
intermittent reset drive. Timing examples for 300 DPI/A4 reading using this mode are shown in page 17/21, 18/21
and 20/21 for reference.
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2002-04-03