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ST92185B データシート(PDF) 113 Page - STMicroelectronics

部品番号 ST92185B
部品情報  16K/24K/32K ROM HCMOS MCU WITH ON-SCREEN-DISPLAY
PDF  178 Pages
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メーカー  STMICROELECTRONICS [STMicroelectronics]
ホームページ  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

ST92185B データシート(HTML) 113 Page - STMicroelectronics

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ST92185B - ON SCREEN DISPLAY (OSD)
ON SCREEN DISPLAY (Cont’d)
7.4.6.3 Building a Serial Mode, 40-Char, Line
Mode Display
Half-Page Location:
The 0.5 Kbyte block of half-page content is stored
in the TDSRAM location pointed to by the
PG3..PG0 bits.
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 Row attribute (row count) is
stored in this block at offset 100h and contains 12
bytes for line mode (see DCM1R register descrip-
tion).
Row Scrolling Buffer Location:
The scrolling buffer corresponds to Row 12 when
the scrolling feature is used (in this case 11 rows
are scrolled).
Figure 73. Serial (40 Characters) Line Mode Mapping
0.5K TDSRAM
Row 1
Row 11
Row 12/ Scrolling Buffer
Free Space
Resolution 0.5K bytes
See Figure 22 for
Address Values
0.5K TDSRAM
Header Char.
Resolution 0.5K bytes
Status Row 0
Status Row 1
Free Space
Row Attr.
Free Space
100h
Block
Number
(0.5K)
TDSRAM
Address
(hex.)
TDPR
Value
(Hex.)
PG3..PG0
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
15
9E00
F
6K
2K
8K



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