AL250 International Power Sources, Inc., AL250 Datasheet - Page 22

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

8.0 AL250/251 Register Definition
The AL250/251 is powered up to a default state depending on the hardware mode-setting pins.
Hardware configuration pins are disabled by setting SoftConfig (bit 4 of register 03h) to one, and
configurations are decided by the values of register 02h which is software programmable.
The following is the summary of the AL250/251 control registers
COMPANYID
REVISION
BOARDCONFIG
GENERAL
FAMILY
CONTROL
STATUS
BORDERRED
BORDERGREEN
BORDERBLUE
LUTOSDCONTROL
LUTOSDINDEX
LUTOSDDATA
OVERLAYCTRL
OVL1RED
OVL1GREEN
OVL1BLUE
OVL2RED
OVL2GREEN
OVL2BLUE
OVL3RED
OVL3GREEN
OVL3BLUE
OSD1HSTART
OSD2HSTART
HDESTART
HDEEND
Register
Addr.
0Dh
1Ah
1Dh
0Ch
0Eh
1Bh
1Ch
1Eh
00h
01h
02h
03h
04h
08h
09h
10h
11h
12h
13h
14h
15h
16h
17h
18h
19h
1Fh
20h
21h
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
R/W
R/W
R/W
R/W
R/W
R/W
W
W
R
R
R
R
Default
FFh
FFh
FFh
FFh
46h
00h
00h
25h
00h
00h
00h
00h
00h
00h
00h
00h
00h
00h
00h
00h
00h
00h
00h
00h
00h
??
??
Company ID
Revision number
Board configuration
General control
Chip family number
Control register
Status register
Border color, red channel
Border color, green channel
Border color, blue channel
LUT/OSD control
LUT/OSD index
Reserved
LUT/OSD data
Overlay Effect Control
Overlay color 1, red channel
Overlay color 1, green channel
Overlay color 1, blue channel
Overlay color 2, red channel
Overlay color 2, green channel
Overlay color 2, blue channel
Overlay color 3, red channel
Overlay color 3, green channel
Overlay color 3, blue channel
On Screen Display bitmap 1 horizontal start
On Screen Display bitmap 2 horizontal start
Horizontal capture start
Horizontal capture end
Function
July 28, 1999
AL250
22