Samsung S3C2440A User Manual
Page 482
S3C2440A RISC MICROPROCESSOR
CAMERA INTERFACE
23-4
Table 23-2 Video Timing Reference Codes of ITU-656 Format
Data bit number
First word
Second word
Third word
Fourth word
9 (MSB)
1
0
0
1
8
1
0
0
F
7
1
0
0
V
6
1
0
0
H
5
1
0
0
P3
4
1
0
0
P2
3
1
0
0
P1
2
1
0
0
P0
1
(NOTE)
1 0 0 0
0 1 0 0 0
For compatibility with existing 8-bit interfaces, the values of bits D1 and D0 are not defined.
F = 0 (during field 1), 1 (during field 2)
V = 0 (elsewhere), 1 (during field blanking)
H = 0 (in SAV: Start of Active Video), 1 (in EAV: End of Active Video)
P0, P1, P2, P3 = protection bit
Camera interface logic can catch the video sync bits like H (SAV, EAV) and V (Frame Sync) after reserved data as
“FF-00-00”.
NOTE : All external camera interface IOs are recommended to be Schmitt-trigger type IO for noise reduction.