HD66781 Datasheet, PDF (107/196 Pages) Renesas Technology Corp – 720-channel Source Driver for a-Si TFT/Low Temperature Poly-Si TFT Panels with 262,144-color display RAM

HD66781
Table 58
Original image (before resizing)
number of data in horizontal direction X 240
number of data in vertical direction
Y 320
resizing ratio
1/N 1/2
HD66781 settings
Resizing setting
number of data in horizontal direction
number of data in vertical direction
RAM writing start address
RAM window address
Preliminary
RSR
RCV
RCH
AD
HSA
HEA
VSA
VEA
2’h1
2’h0
2’h0
17’h00000
8’h00
8’h77
8’h00
8’h9F
Instructions for Resizing
Table 59
RSR[1:0]
2h’0
2h’1
2h’2
2h’3
Resizing ratio
ratio
No resizing (x 1)
1/2 resizing (x 1/2)
setting disabled
1/4 resizing (x 1/4)
Table 60 Surplus pixels
vertical direction
RCV[1:0]
surplus pixels
2h’0
0
2h’1
1 pixel
2h’2
2 pixels
2h’3
3 pixels
1 pixel = 1 RGB
horizontal direction
RCH[1:0]
2h’0
2h’1
2h’2
2h’3
1 pixel = 1 RGB
surplus pixels
0
1 pixel
2 pixels
3 pixels
Rev.0.5, July.31.2003, page 107 of 196