Samsung YP-P10 User Manual Page 518

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S3C2440A RISC MICROPROCESSOR CAMERA INTERFACE
23-9
TIMING DIAGRAM FOR REGISTER SETTING
The first register setting for frame capture command can occur anywhere in the frame period. But, it is recommended
that you set it at the CAMVSYNC “L” state first and the CAMVSYNC information can be read from the status SFR
(Please see next page). All command include ImgCptEn, is valid at CAMVSYNC falling edge. But be careful that
except for first SFR setting, all command should be programmed in an ISR (Interrupt Service Routine). Especially,
capture operation should be disabled when related information for target size are changed.
CAMVSYNC
CAMHREF
INTERRUPT
SFR setting
(ImgCptEn)
Multi frame
capturing
Reserved
Image Capture
< Frame Capture Start >
CAMVSYNC
CAMHREF
INTERRUPT
New SFR
command in ISR
In Capturing
Reserved
Image Capture
< New Command Valid Timing Diagram >
New Command
Figure 23-8. Timing Diagram for Register Setting
NOTE: FIFO overflow of codec path will be occurred if codec path is not operating when preview path is operated. If you
want to use codec path under this case, you should stop preview path and reset CAMIF using SwRst bit of
CIGCTRL register. Then clear overflow of codec path and set special function registers that you want.
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