參數(shù)資料
型號： ST92186B3BK
廠商： STMICROELECTRONICS
元件分類： 微控制器/微處理器
英文描述： 16-BIT, MROM, 24 MHz, MICROCONTROLLER, PDIP32
封裝： PLASTIC, SDIP-32
文件頁數(shù)： 19/148頁
文件大小： 1664K
代理商： ST92186B3BK
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ST92186B - ON SCREEN DISPLAY CONTROLLER (OSD)
OSD CONTROLLER (Cont’d)
7.4.8 Register Description
To run the Display controller properly, you need to
program the 7 registers that configure the display
BORDER COLOR REGISTER 2 (OSDBCR2)
R246 - Read/Write
Register Page: 42
Reset Value: 0x00 0000
Bit 7 = B2BC
Background to Border Color control
bit.
This bit allows to force the background color of all
the characters to the border color.
0: All characters backgrounds are normally dis-
played
1: All character backgrounds are forced to the cur-
rent border color and translucency level.
Bit 6 = Reserved
Bits 5:3 = BOS[2:0]
Border color translucency
These bits control the Border color translucency.
BOS[2:0] = 7 means that the border color will be
fully opaque (no video mixed in it on the display)
BOS[2:0] = 0 means that the border color will be
fully transparent (the video is displayed instead of
this color)
Bits 2:0 = BOR[2:0]
Red Border color
These bits configure the red intensity for the bor-
der color.
BOR[2:0] = 0 means that no red is used to define
the border color.
BOR[2:0] = 7 means that the maximum red inten-
sity is used in the border color.
BORDER COLOR REGISTER 1 (OSDBCR1)
R247 - Read/Write
Register Page: 42
Reset Value: 0x00 0000
Bit 7 = DIFB
Digital FB control bit
This bit selects the Fast Blanking (FB) output as
analog or digital.
0: The FB DAC works as an 8-level DAC output
from 0V up to 1V (with a 500ohms internal im-
pedance to ground).
1: The FB DAC works as a 2-level DAC output, the
high level providing an amplitude higher than
2.7 volts. All translucency control bits are man-
aged as follows:
- the code (0,0,0) generates a “0” output (0 volt),
- all other codes generate a “1” output (>2.7 V).
Note: This applies to BT[2:0], FT[2:0], U2T[2:0],
U2T[2:0] and BOS[2:0] (refer to Section 7.4.6.3,
Section 7.4.6.4 and Section 7.4.6.1, and to the
OSDBCR2 register).
Bit 6 = Reserved
Bits 5:3 = BOG[2:0]
Green Border color
These bits configure the green intensity for the
border color.
BOG[2:0] = 0 means that no green is used to de-
fine the border color.
BOG[2:0] = 7 means that the maximum green in-
tensity is used in the border color.
Bits 2:0 = BOB[2:0]
Blue Border color
These bits configure the blue intensity for the bor-
der color.
BOB[2:0] = 0 means that no blue is used to define
the border color.
BOB[2:0] = 7 means that the maximum blue inten-
sity is used in the border color.
70
B2BC
BOS2
BOS1
BOS0
BOR2
BOR1 BOR0
70
DIFB
-
BOG2
BOG1
BOG0
BOB2
BOB1 BOB0
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