參數(shù)資料
型號(hào): P83C845BBP
廠商: NXP SEMICONDUCTORS
元件分類: 微控制器/微處理器
英文描述: Microcontrollers for TV and video MTV
中文描述: 8-BIT, MROM, 12 MHz, MICROCONTROLLER, PDIP42
封裝: 0.600 INCH, PLASTIC, SOT-270-1, SDIP-42
文件頁數(shù): 20/40頁
文件大?。?/td> 243K
代理商: P83C845BBP
1996 Mar 22
20
Philips Semiconductors
Product specification
Microcontrollers for TV and video (MTV)
83C145; 83C845
83C055; 87C055
Table 19
Special characters related to OSDT register
13.6.3
S
PECIAL FUNCTION REGISTER
OSAT
Table 20
Special Function Register OSAT ( On Screen ATtributes; address 98H)
Table 21
Description of OSAT bits
SPECIAL CHARACTER
OSDT5
OSDT4
OSDT3
OSDT2
OSDT1
OSDT0
New Line
Space (normal)
BSpace
SplitBspace
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
0
0
1
1
1
0
0
1
WITH OSDT =
7
6
5
4
3
2
1
0
New Line
BSpace
SplitBSpace
Any other character
E
B
B
B
SR
BC2
BC2
FC2
D
Sh
BC0
BC0
FC0
BC1
BC1
FC1
BIT
SYMBOL
DESCRIPTION
7 to 5, 3
Reserved.
With OSDT = New Line;
note 1
4
2
E
End; If the E bit is 1, no further rows are displayed on the screen.
Short row; If E = 0 and SR = 1, the next row is a ‘short row’, i.e. it is only 4 or 8 scan lines high
rather than 18 or 36. Short rows can be used for underlined text.
Double height; If E = 0 and D = 1, all of the characters in the following row are displayed with
‘double height and width’.
Shadowing; If E = 0 and Sh = 1, all of the characters in the following row are displayed with
‘shadowing’; see Section 13.8.
SR
1
D
0
Sh
With OSDT = BSpace or SplitBspace;
note 2
4
B
Background; B indicates whether ‘background pixels’ should show the current background
colour (B = 1), or television video (B = 0).
BC2 to BC0 Bcolor: Background colour (notes 3 and 4; see Table 22).
2 to 0
With OSDT = Any other character
4
B
Background; B indicates whether ‘background pixels’ should show the current background
colour (B = 1), or television video (B = 0).
FC2 to FC0 Fcolor: Foreground colour. Fcolor indicates the colour of ‘foreground pixels’ in the ROM bit
map for this character (see Table 22).
2 to 0
相關(guān)PDF資料
PDF描述
P83C055 Microcontrollers for TV and video MTV
P87C055 Microcontrollers for TV and video MTV
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