参数资料
型号: M37225ECSP
元件分类: 微控制器/微处理器
英文描述: 8-BIT, OTPROM, 8.1 MHz, MICROCONTROLLER, PDIP42
封装: 0.600 INCH, 1.78 MM PITCH, PLASTIC, SDIP-42
文件页数: 104/127页
文件大小: 1897K
代理商: M37225ECSP
77
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER for VOLTAGE SYNTHESIZER
with ON-SCREEN DISPLAY CONTROLLER
M37225M6/M8/MA/MC–XXXSP
M37225ECSP
MITSUBISHI MICROCOMPUTERS
Rev. 1.0
(9) 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 4 of the
OSD control register. The top boundary is set by the top border con-
trol register (TBR) and the bottom boundary is set by bottom border
control register (BBR). The left boundary is set by the left border
control register (LBR), and the right boundary is set by the right bor-
der control register (RBR).
The left and right boundarys can be adjusted minutely by bits 2 and 3
of the OSD control register (address 00EA16).
Note: The SPRITE display is not effected by the window function.
Fig. 8.10.27 Example of window function
Window
F
G HI
J
KL
M N O
PQ R
S
T
Bottom boundary
of window
Top boundary
of window
Screen
Window
Right boundary
of window
4TOSC RBR + 1TOSC WH
4TOSC LBR + 1TOSC WH
Tdef4
HSYNC
Hdef
TBR
BBR
VSYNC
LBR: Value of left border control register
RBR: Value of right border control register
WH
: Value (0 to 3) of window horizontal position minute adjustment bit
TOSC : OSD oscillation cycle
Tdef4 : 4TOSC
TBR: Value of top border control register
BBR: Value of bottom border control register
Hdef
: 17H
H: HSYNC
Left boundary
of window
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