m37280eksp Mitsumi Electronics, Corp., m37280eksp Datasheet - Page 109

• Manufacturer Part Number: m37280eksp
• Description: Single-chip 8-bit Cmos Microcomputer With Closed Caption Decoder And On-screen Display Controller
• Manufacturer: Mitsumi Electronics, Corp.

12.11.15 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 and 2 (TB1, TB2), and the bottom border is
set by the bottom border control registers 1 and 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 and 2 (LB1, LB2) and the right border is set by the
right border control registers 1 and 2 (RB1, RB2), in 1T
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. 12.11.47 Blank Output Example (When OSD Output is B + OUT1)
Rev. 1.0
microcomputer
Blank output
signal in
OUT1
A
B
Output example of horizontal blank
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER
4
OSC
M37280MF–XXXSP, M37280MK–XXXSP
units.
A'
H
L
H
L
H
L
Notes 1: When using vertical blank, do not set “00
Output example of top and vertical blank
2: When using horizontal blank, do not set LB1 = LB2 = “00
3: Horizontal blank and horizontal window, as well as vertical blank
4: When using horizontal blank, set as follows:
5: When using vertical blank, set as follows:
6: When all-blocks display is OFF (bit 0 of OSD control register 1 = “0”),
= “00
and vertical window can not be used simultaneously.
(LB1 + LB2
(TB1 + TB2
do not use vertical blank.
16
.”
and ON-SCREEN DISPLAY CONTROLLER
16
16
4
MITSUBISHI MICROCOMPUTERS
2
2
) < (RB1 + RB2
) < (BB1 + BB2
A'
A
OUT1
L
M37280EKSP
H
16
16
2
2
L
16
).
).
B
” and “01
H
microcomputer
Blank output
L
signal in
H
16
” to TB1 at TB2
16
.”
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