FEDL87V2107-01
OKI Semiconductor
ML87V2107
•
Setting of Input System Horizontal Valid Pixel Start Position (IHPS)
The input system horizontal valid pixel start position (IHPS) is set in pixel unit with reference to the input
system horizontal reset (IHR: internal signal), generated from IHS, by setting NPHWE[7:0]
(SUB:45h-bit[7:0]).
The data subsequent to IHPS is written in the data memory of valid pixels as the valid data.
This value can be set in 255 levels of ±127 pixels with regard to the initial value (NPHWE[7:0] = 80h).
In the ITU-R BT.656 mode, the value cannot be set. Write enable with regard to valid data is generated on the
basis of detected SAV, EAV.
Table F1-1-3 (3) Input System Horizontal Valid Pixel Start Position
HMD
IHPS position (number of pixels from IHS)
NPHWE=80h
VMD[0]
NPHWE=01h
(-127 pixels)
17
NHPWE=FFh
(+127 pixels)
271
[1]
……
……
[0]
(default)
144
0
0
1
0
1
0
1
……
……
……
……
……
……
……
……
……
……
……
……
0
0
0
0
1
1
0
11
49
13
49
15
138
265
303
267
303
269
1
176
1
140
0
176
0
142
Others
Test modes
127pixels
127pixels
IHS
IHPS
640/720/768pixels
Valid data
#IWE
1pixel
1pixel
YI[7:0]
CI[7:0]
Figure F1-1-3 (4) Input System Horizontal Valid Pixel Start Timing
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