ASX340AT Datasheet, PDF (46/75 Pages) ON Semiconductor – Color CMOS NTSC/PAL Digital Image

ASX340CS: 1/4-Inch Color CMOS NTSC/PAL Digital Image Sensor
Overlay Character Generator
Any update to the character generator string requires the string to be passed in its
entirety with the Host Command. Character strings have their own control properties
aside from the Overlay bitmap properties.
Figure 26: Internal Block Diagram Overlay
O verla y
Register Bus
D M A /C P U
Data Bus
User Registers
Tim ing control
BT656
Layer3
Layer2
Layer1
Layer0
N um ber
G en e ra to r
BT656
ROM
ASX340AT/D Rev. H, 8/15 EN
46
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