AL250 International Power Sources, Inc., AL250 Datasheet - Page 28

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

29h:
2Ah: Test (R/W) [TEST]
2Bh:
2Ch: Horizontal Blank End (R/W) [HBLANKEND]
2Dh: Vertical Blank Start (R/W) [VBLANKSTART]
2Eh:
Horizontal Total Low (R/W) [HTOTAL2]
HTotal2_1
testIn
testOut
testOvl
Horizontal Blank Start (R/W) [HBLANKSTART]
HBlankStart
HBlankEnd
VBlankStart
Vertical Blank End (R/W) [VBLANKEND]
VBlankStart
<7:2>
<1:0>
<7>
<6>
<5:4>
<3:0>
<7:0>
<7:0>
<7:0>
<7:0>
Reserved
Bit 2 to bit 1 of horizontal total, htotal bit 0 = 0
Feed RGB value from 0x15, 0x16, 0x17 registers to the input
Feed RGB value from 0x15, 0x16, 0x17 registers to the output
00, use hardware overlay key
01, set overlay key value to 01
10, set overlay key value to 10
11, set overlay key value to 11
Reserved
Horizontal blanking start. (unit: 8 pixels)
Horizontal blanking end. (unit: 8 pixels)
Vertical blanking start. (unit: 4 lines)
Vertical blanking end. (unit: 4 lines)
July 28, 1999
AL250
28