AL250 International Power Sources, Inc., AL250 Datasheet - Page 8

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

6.0 Functional Description
6.1 Digital Input/Output Data Formats
The digital video data formats that the AL250/251 accepts are YUV422 and RGB565. The pin
definition and the RGB 888 to 565 mapping is as follows:
To select YUV422 or RGB565 as the input format, program the Board Configuration Register #02h,
or set the hardware pin “INTYPE” (AL250 pin#11, AL251 pin#14).
The AL251 provides digital output in RGB565 or YUV422 format. The pin definition and the
RGB565 to 888 mapping is as follows:
Video Data Signal
Video Data Signal
INTYPE select
Pixel clock
VDIN15
VDIN14
VDIN13
VDIN12
VDIN11
VDIN10
VDIN9
VDIN8
VDIN7
VDIN6
VDIN5
VDIN4
VDIN3
VDIN2
VDIN1
VDIN0
DO
DO
DO
7
6
5
AL250
AL251 Pin #
64
63
62
61
59
58
57
55
54
53
52
51
50
49
48
47
Pin Number
-
56
55
52
AL251
79
78
77
76
74
73
72
70
69
68
67
62
61
60
59
58
-
INTYPE = 0
YUV 422
YUV 422
U7, V7
U6, V6
U5, V5
U4, V4
U3, V3
U2, V2
U1, V1
U0, V0
VCLK
Y7
Y6
Y5
Y4
Y3
Y2
Y1
Y0
Y7
Y6
Y5
RGB 565 888
RGB 888 565
INTYPE = 1
VCLK
R7
R6
R5
R4
R3
G7
G6
G5
G4
G3
G2
B7
B6
B5
B4
B3
R7
R6
R5
July 28, 1999
AL250
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