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ST92195D 数据表(PDF) 116 Page - STMicroelectronics

部件名 ST92195D
功能描述  48-96 Kbyte ROM HCMOS MCU WITH ON-SCREEN DISPLAY AND TELETEXT DATA SLICER
PDF  249 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

ST92195D 数据表(HTML) 116 Page - STMicroelectronics

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ST92195C/D - ON SCREEN DISPLAY (OSD)
ON SCREEN DISPLAY (Cont’d)
7.4.6.2 Building a Parallel Mode, 40-Char, Full
Page Display
Page Location
The pair of adjacent 1 Kbyte blocks of page con-
tent is stored in the TDSRAM location pointed to
by the PG3..PG0 bits. The first block contains the
characters, the second block contains the attribute
bytes.
Header & Status Rows Location
The 0.5 Kbyte block containing the Header, Status
Row 0 and Status Row 1 is pointed to by the
HS3..HS0 bits. The Header/Status attributes are
stored in this block at offset 80h.
Row Scrolling Buffer Location
The scrolling buffer corresponds to the 40 bytes
following Row 23 when the scrolling feature is
used.
Figure 71. Parallel Mode (40 Characters) - Page Mapping
Figure 72. Parallel Mode (40 Characters) - Header and Status Mapping
1K TDSRAM
Row 1 Char.
Row 23 Char.
Scrolling Buffer
Free Space
Resolution 2K bytes
Block
Number
(2K)
TDSRAM
Address (hex)
Char.
TDSRAM
Address (hex)
Attr.
TDPR
Value (hex)
PG3..PG0
0
8000
8400
0
1
8800
8C00
4
2
9000
9400
8
3
9800
9C00
C
1K TDSRAM
Row 1 Attr.
Row 23 Attr.
Scrolling Buffer
Free Space
6K
2K
8K
Block
Number (0.5K)
TDSRAM
Address (hex)
TDPR
Value (hex)
HS3..HS0
0
8000
0
1
8200
1
2
8400
2
3
8600
3
4
8800
4
5
8A00
5
6
8C00
6
7
8E00
7
8
9000
8
9
9200
9
10
9400
A
11
9600
B
12
9800
C
13
9A00
D
14
9C00
E
0.5K TDSRAM
Header Char.
Resolution 0.5K bytes
Status Row 0 Char.
Status Row 1 Char.
Free Space
Header Attr.
Status Row 0 Attr.
Status Row 1 Attr.
Free Space
80h
6K
2K
8K



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