NUC970 Technical Reference Manual
Publication Release Date: Dec. 15, 2015
- 1145 -
Revision V1.30
NUC97
0
T
E
CHNIC
A
L
RE
F
E
RE
N
CE
MA
NUA
L
OSD Overlay Control Register (OSD_OVERLAY)
Setting this register can control the display effect of the overlay area. It can be periodic blanking,
VA and OSD data mixing, and VA or OSD data alone.
Register
Offset
R/W
Description
Reset Value
OSD_OVERLAY
0x50
R/W
OSD Overlay Control Register
0x0000_0000
31
30
29
28
27
26
25
24
Reserved
23
22
21
20
19
18
17
16
BLINK_VCNT[7:0]
15
14
13
12
11
10
9
8
Reserved
BLI_ON
CKEY_ON
7
6
5
4
3
2
1
0
Reserved
VA_SYNW[2:0]
OCR1[1:0]
OCR0[1:0]
Bits
Description
[31:24]
Reserved
Reserved.
[23:16]
BLINK_VCNT
OSD Blinking Cycle Time
An 8-bit value specifies the OSD blinking cycle time (unit : Vsync).
[15:10]
Reserved
Reserved.
[9]
BLI_ON
OSD Blinking Control
0 = Blinking Disable.
1 = Blinking Enable.
Note:
Blinking control mode share the same color-key pattern registers with color-key
control mode
[8]
CKEY_ON
OSD Color-key Control
0 = Color-Key Disable.
1 = Color-Key Enable.
[7]
Reserved
Reserved.
[6:4]
VA_SYNW
Synthesis Video Weighting
000 = Synthesized Video = Video; otherwise.
Synthesized Video = ((Video * VA_SYNW) + (OSD * (8-VA_SYNW))) / 8.
[3:2]
OCR1
Video/OSD Overlay Control 1
When VA_EN (DCCS[1]) = 1, OSD_EN (DCCS[2]) = 1, CKEY_ON (OSD_OVERLAY[8])
= 1, Display region within OSD window, color-key condition match,.
00 = Display Video data.
01 = Display OSD data.
10 = Display synthesized (Video + OSD) data.