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Section 27 Video Display Controller 3
R01UH0134EJ0400 Rev. 4.00 Page 1585 of 2108
Sep 24, 2014
SH7262 Group, SH7264 Group
27.7.9 Video Scaling and Correction Register (VIDEO_IMAGE_CNT)
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
151413121110987654321
0
1000000010000000
R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W
0000001100000000
RRRRRRR/WR/WRR/WR/WR/WRR/WR/WR/W
-
Contrast[7:0] Bright[7:0]
- - - - - CLIP_Y CLIP_C -
SUB_
SCALE_V
SCALE_V[1:0] -
SUB_
SCALE_H
SCALE_H[1:0]
Bit:
Initial value:
R/W:
Bit:
Initial value:
R/W:
Bit Bit Name
Initial
Value R/W Description
31 to 24 Contrast[7:0] H'80 R/W These bits specify the contrast of luminance.
Contrast = this value / 128
Y0 = Luminance of captured video input
Y1 = Contrast (Y0 – 16)
23 to 16 Bright[7:0] H'80 R/W These bits specify the brightness of luminance.
BRIGHT = this value – 128
Y2 = Y1 + BRIGHT
15 to 10 All 0 R Reserved
These bits are always read as 0. The write value
should always be 0.
9 CLIP_Y 1 R/W Enables luminance clipping.
0: Disabled
1: Enabled (235 or a greater value is clipped to
235, and 16 or a smaller value is clipped to
16.)
8 CLIP_C 1 R/W Enables chrominance clipping.
0: Disabled
1: Enabled (240 or a greater value is clipped to
240, and 16 or a smaller value is clipped to
16.)
7 0 R Reserved
This bit is always read as 0. The write value
should always be 0.