M3727GM6 Datasheet, PDF (85/129 Pages) Renesas Technology Corp – SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER and ON-SCREEN DISPLAY CONTROLLER

M3727GM6/M8–XXXSP/FP M37272E8SP/FP
8.11.12 Window Function
This function sets the top and bottom boundary of display limit on a
screen. The window function is valid only in the CC mode. The top
boundary is set by the window registers 1 and bit 7 of block control
register 1. The bottom boundary is set by window registers 1 and bit
7 of block control register 2. This function is turned on and off by bit
2 of the OSD control register (refer to Figure 8.11.3).
The window registers 1 and 2 is shown in Figures 8.11.26 and 8.11.27.
ABCDE
F GH I J
KL MNO
P QR S T
U V WX Y
OSD mode
CC mode
CC mode
CC mode
OSD mode
Screen
Top
boundary
of window
Window
Bottom
boundary
of window
Fig. 8.11.25 Example of Window Function
Rev.1.00 Apr 01, 2001 page 85 of 127
REJ03B0132-0100Z