M306V2ME Datasheet, PDF (224/276 Pages) Mitsubishi Electric Semiconductor – SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER and ON-SCREEN DISPLAY CONTROLLER

MITSUBISHI MICROCOMPUTERS
M306V2ME-XXXFP
M306V2EEFP
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER
and ON-SCREEN DISPLAY CONTROLLER
2.16.15 Window Function
The window function can be set windows on-screen and output OSD within only the area where the
window is set.
The ON/OFF for vertical window 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. Accord-
ingly, the vertical window function cannot be used simultaneously with the vertical blank function. The
display mode to validate the window function is selected by bits 5 to 7 of the OSD control register 3. The
top border is set by the top border control register (TBR) and the bottom border is set by the bottom
border control register (BBR).
The ON/OFF for horizontal window function is performed by bit 4 of the OSD control register 2 and is
used interchangeably for the horizontal blank function with bit 5 of the OSD control register 2. Accord-
ingly, the horizontal blank function cannot be used simultaneously with the horizontal window function.
The display mode to validate the window function is selected by bits 5 to 7 of the OSD control register 3.
The left border is set by the left border control register (LBR), and the right border is set by the right
border control register (RBR).
Notes 1: Horizontal blank and horizontal window, as well as vertical blank and vertical window can not be
used simultaneously.
2: When the window function is ON by OSD control registers 1 and 2, the window function of
OUT2 is valid in all display mode regardless of setting value of the OSD control register 3 (bits
5 to 7). For example, even when make the window function valid in only CC mode, the function
of OUT2 is valid in OSDS/L/P and CDOSD modes.
3: As for SPRITE display, the window function does not operate.
Left border
of window
Window
Right border
of window
ABCDE
F GH I J
K L MNO
CDOSD mode
CC mode
Top border
of window
Window
P QRS T
U V WX Y
Screen
OSDS/L/P mode
Bottom border
of window
Figure 2.16.45 Example of window function (When CC mode is valid)
224
Rev. 1.0