Samsung S3C6400X User Manual page 580

S3C6400X RISC MICROPROCESSOR
TIMING DIAGRAM FOR IRQ (MEMORY DATA SCALING MODE)
- MSDMA input can be selected by SFR setting. In this case, IRQ is generated after P-port or C-port DMA
operation is completed for per frame. This mode is aware of starting point by user's SFR setting (ENVID '0' → '1').
Therefore, this mode does not required IRQ of starting point and LastIRQ. FrameCnt is increased by 1 at
ENVID_M_P(=ENVID_M_C) low to rising ('0' → '1') and ImgCptEn_PrSC(=ImgCptEn_CoSC) '1'
ENVID_MS
ImgCptEn_PrSC
Preview DMA frame done
IRQ
FrameCnt
SFR region SFR region
FrameCnt ++
3 0
Capture O Capture O
(Frame_3) (Frame_0)
Figure 20-14. Timing diagram for IRQ (MSDMA path)
Preliminary product information describe products that are in development,
for which full characterization data and associated errata are not yet available.
Specifications and information herein are subject to change without notice.
SFR region SFR region
1 1
Capture O
Capture X
(Frame_1)
CAMERA INTERFACE
SFR region SFR region
2 3
Capture O Capture O
(Frame_2) (Frame_3)
SFR region
0
20-15