
60
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER
and ON-SCREEN DISPLAY CONTROLLER
M37272M6/M8–XXXSP/FP, M37272MA–XXXSP
M37272E8SP/FP, M37272EFSP
MITSUBISHI MICROCOMPUTERS
Rev. 1.3
8.11 OSD FUNCTIONS
Table 8.11.1 outlines the OSD functions.
This microcomputer incorporates an OSD circuit of 32 characters ✕
2 lines. And also, there are 2 display modes and they are selected by
a block unit. The display modes are selected by bits 0 and 1 of block
control register i (i = 1 and 2).
The features of each mode are described below.
Table 8.11.1 Features of Each Display Mode
Number of display characters 32 characters ✕ 2 lines
Dot structure
16 ✕ 26 dots (Character display area : 16 ✕ 20 dots)
16 ✕ 20 dots
Kinds of characters 254 kinds
Kinds of character sizes 1 kinds 8 kinds
Pre-divide ratio (See note) ✕ 2 (fixed) ✕ 2, ✕ 3
Dot size 1T
C
✕ 1/2H 1T
C
✕ 1/2H, 1T
C
✕ 1H, 2T
C
✕ 2H, 3T
C
✕ 3H
Attribute Smooth italic, under line, flash Border (black)
Character font coloring 1 screen : 8 kinds (per character unit)
Character background coloring 1 screen : 8 kinds (per character unit)
OSD output R, G, B
Raster coloring Possible (per character unit)
Function Auto solid space function
Window function
Display position Horizontal: 128 levels, Vertical: 512 levels
Display expansion (multiline display) Possible
Parameter
Notes 1: The divide ratio of the frequency divider (the pre-divide circuit) is referred as “pre-divide ratio” hereafter.
2: The character size is specified with dot size and pre-divide ratio (refer to 8.11.2 Dot Size).
Display mode
CC mode
(Closed caption mode)
OSD mode (Border OFF)
(On-screen display mode)
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