參數(shù)資料
型號： M37281MAH-XXXSP
廠商： Renesas Technology Corp.
英文描述： SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER and ON-SCREEN DISPLAY CONTROLLER
中文描述： 單芯片8位CMOS微機隱蔽字幕解碼器和屏幕顯示控制器
文件頁數(shù)： 108/172頁
文件大?。?/td> 1319K
代理商： M37281MAH-XXXSP
M37281MAH
–
XXXSP,M37281MFH
–
XXXSP,M37281MKH
–
XXXSP, M37281EKSP
Rev.1.01 2003.07.16 page 108 of 170
8.11.15 Blank Function
The blank function can output blank (OUT1) area on all sides (verti-
cal and horizontal) of the screen.
The ON/OFF for vertical blank function is performed by bit 5 of the
OSD control register 1 and is used to select vertical window function
or vertical blank function by bit 6 of the OSD control register 2. Ac-
cordingly, the vertical blank function cannot be used simultaneously
with the vertical window function. The top border is set by the top
border control registers 1, 2 (TB1, TB2) and the bottom border is set
by the bottom border control registers 1, 2 (BB1, BB2), in 1H units.
The ON/OFF for horizontal blank function is performed by bit 4 of the
OSD control register 2 and is used interchangeably for the horizontal
window function with bit 5 of the OSD control register 2 . Accordingly,
the horizontal blank function cannot be used simultaneously with the
horizontal window function. The left border is set by the left border
control registers 1, 2 (LB1, LB2) and the right border is set by the
right border control registers 1, 2 (RB1, RB2), in 1T
OSC
units.
The OSD output (except raster) in area with blank output is not de-
leted.
These blank signals are not output in the horizontal/vertical blanking
interval.
Fig. 8.11.45 Blank Output Example (When OSD Output is B + OUT1)
Notes 1:
Horizontal blank and horizontal window, as well as vertical blank
and vertical window cannot be used simultaneously.
2:
When all-blocks display is OFF (bit 0 of OSD control register 1 =
“
0
”
),
do not use vertical blank.
Output example of horizontal blank
Output example of top and vertical blank
OUT1
OUT1
4
A'
A
B
4
A
A'
B
Blank output
signal in
microcomputer
Blank output
signal in
microcomputer
H
L
H
L
H
L
H
L
H
L
H
L
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