Samsung S5PC110, Manual

Page: 1263 / 2426

S5PC110_UM 2 1BCAMERA INTERFACE
2-16
Figure 2-13 Memory Storing Style
2.7.5 TIMING DIAGRAM FOR REGISTER SETTING
The first register setting for frame capture command can happen anytime in the frame period. It is recommended
to first set the VSYNC “L” state, input DMA start “L” state, and then VVALID “H” state. VSYNC and VVALID
information can be read from status SFR. For more information, refer to
Figure 2-14
.
All commands (including ImgCptEn) are valid at VSYNC falling edge or VVALID rising edge. Except the first SFR
setting, all commands should be programmed in the Interrupt Service Routine (ISR). Size, image mirror or
rotation, windowing, and zoom in settings are allowed to change during capturing. In case of DMA input mode, all
command should be programmed after the InputDMA and OutputDMA operation ends, as shown in
Figure 2-15
.
VVALID
HVALID
INTERRUPT
SFR setting
(ImgCptEr)
Multi frame
capturing
Reserved
Image Capture
Frame Capture Start for external camera input
VSYNC
HREF
INTERRUPT
New SFR
command
In Capturing
Reserved
Image Capture
New command valid timing diagram
New Command
VSYNC
HREF
INTERRUPT
SFR setting
(ImageCptEr)
Multi frame
capturing
Reserved
Image Capture