M37160M8 Datasheet, PDF (74/131 Pages) Renesas Technology Corp – SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER

M37160M8/MA/MF-XXXSP/FP,M37160EFSP/FP
(4) Border
The border is output around the character font (all bordered) in the
OSD2 mode only. The border ON/OFF is controlled by bit 0 and 1 of
block control register i (refer to Figure 8.10.4).
The OUT signal is used for border output.
The horizontal size (x) of the border is 1TC (OSD clock cycle divided
in pre-divide circuit) regardless of the character font dot size. The
vertical size (y) differs depending on the screen scan mode and the
vertical dot size of the character font.
Notes 1 : The border dot area is the shaded area as shown in Figure 8.10.21.
2 : When the border dot overlaps on the next character font, the charac-
ter font has priority (refer to Figure 8.10.23 A).
When the border dot overlaps the next character back ground, the
border has priority (refer to Figure 8.10.23 B).
3 : The border in vertical out of the character area is not displayed (refer
to Figure 8.10.23).
OSD2 mode
16 dots
All bordered
Fig. 8.10.21 Example of Border Display
Character
font area
1 dot width of border
1 dot width of border
y
x
Scan mode
Border dot size
Vertical dot size of
character font
Horizontal size (x)
Vertical size (y)
Normal scan mode
Bi-scan mode
1/2H
1H, 2H, 3H
1H, 2H, 4H, 6H
1Tc (OSD clock cycle divided in pre-divide circuit)
1/2H
1H
1H
Fig. 8.10.22 Horizontal and Vertical Size of Border
Rev.1.01 2003.11.13 page 74 of 130