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A.4.2
Video Interface
(1)
Signals
Third Party Slot
1)
VCL (Active Low)
This signal is a sampling clock for the video data V0 to V7.
2)
HGATE
This signal indicates that the main-scanning video data is valid.
3)
VGATE
This signal indicates that the subscanning video data is valid.
4)
V0 to V7
These signal lines carry the scanning video data. Logical "0" indicates a black dot.
5)
FAIL
This signal indicates that a device error (MPU ROM/RAM error) has occurred in the scanner.
VCL
H G A T E
V G A T E
V0 to V7 (8 lines)
FAIL
Figure A.4.2 Video interface signal lines
A.4 Third Party Slot
Scanner
Appendix A-117
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