PCB8517 Просмотр технического описания (PDF) - Philips Electronics
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PCB8517 Datasheet PDF : 24 Pages
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Philips Semiconductors
Stand-alone OSD for monitor applications
Objective specification
PCB8517
ROW CONTROL REGISTERS
Table 5 Column 30
BIT 7
R0
BIT 6
G0
BIT 5
B0
DATA BYTE
BIT 4
R1
BIT 3
G1
BIT 2
B1
BIT 1
CHS
BIT 0
CWS
Table 6 Explanation of Table 5
BIT
7 to 5
4 to 2
1
0
NAME
R0, G0, B0
R1, G1, B1
CHS
CWS
DESCRIPTION
colour definition of colour 0
colour definition of colour 1
This bit defines the height of the display character; when CHS = 1 double height is
selected.
This bit defines the width of the display character; when CWS = 1 double width(1) is
selected.
Note
1. When the display row is selected to be double width, only even column characters will be displayed on the screen
and the odd column characters will not appear.
Table 7 Column 31
BIT 7
R2
BIT 6
G2
BIT 5
B2
DATA BYTE
BIT 4
R3
BIT 3
G3
BIT 2
B3
BIT 1
BIT 0
reserved
Table 8 Explanation of Table 7
BIT
7 to 5
4 to 2
NAME
R2, G2, B2
R3, G3, B3
colour definition of colour 2
colour definition of colour 3
DESCRIPTION
WINDOW CONTROL REGISTERS
There are three control registers for each window. Window 1 occupies columns 0 to 2 of row 10, columns 3 to 5 of
row 10 are occupied by window 2 and columns 6 to 8 of row 10 are occupied by window 3. If window overlapping occurs,
the highest priority window will cover the lowest. Window 1 has the highest priority and window 3 the lowest.
Table 9 Columns 0, 3 and 6 of row 10
BIT 7
MSB
BIT 6
BIT 5
row start address
DATA BYTE
BIT 4
LSB
BIT 3
MSB
BIT 2
BIT 1
row end address
BIT 0
LSB
1997 Mar 03
8
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