AL250 International Power Sources, Inc., AL250 Datasheet - Page 25

• Manufacturer Part Number: AL250
• Description: Video Scan Doubler
• Manufacturer: International Power Sources, Inc.

10h:
11h:
13h:
To program the contents of LUT/OSD, first set Reg.#10h, bit<1:0>, then repeat writing index value to
Reg.#11h, and data value to Reg.#13h.
14h:
BorderBlue
LUT/OSD Control (R/W) 0x10 [LUTOSDCONTROL]
LutOsdWSel
RLutEn
GLutEn
BLutEn
BitMap1En
BitMap2En
LUT/OSD Index (W) [LUTOSDINDEX]
LutOsdIndex
LUT/OSD Data (W) [LUTOSDDATA]
LutOsdData
Overlay Control (R/W) [OVERLAYCTRL]
OvlLogic1
OvlLogic2
<7:0>
<1:0>
<2>
<3>
<4>
<6>
<7>
<7:0>
<7:0>
<1:0>
<3:2>
Border color, blue component
LUT/OSD table write select
00 enable LUT-red table write
01 enable LUT-green table write
10 enable LUT-blue table write
11 enable OSD (On Screen Display) bitmap write
LUT-red enable
0
1
LUT-green enable
0
1
LUT-blue enable
0
1
Bitmap 1 enable
0
1
Bitmap 2 enable
0
1
LUT/OSD index
LUT/OSD data
Overlay logic operation between video and overlay color 1
when overlay key = “01”
00 select overlay color 1
01 video AND overlay color 1
10 video OR overlay color 1
11 video XOR overlay color 1
Overlay logic operation between video and overlay color 2
when overlay key = “10”
00 select overlay color 2
01 video AND overlay color 2
10 video OR overlay color 2
11 video XOR overlay color 2
bypass red LUT
enable red LUT
bypass green LUT
enable green LUT
bypass blue LUT
enable blue LUT
hide bitmap 1
show bitmap 1
hide bitmap 2
show bitmap 2
July 28, 1999
AL250
25