ST92185B STMicroelectronics, ST92185B Datasheet - Page 113

• Manufacturer Part Number: ST92185B
• Description: 16k/24k/32k Rom Hcmos Mcu With On-screen-display
• Manufacturer: STMicroelectronics

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.
Figure 73. Serial (40 Characters) Line Mode Mapping
Row 12/ Scrolling Buffer
Resolution 0.5K bytes
0.5K TDSRAM
Free Space
Row 11
Row 1
Number
Block
(0.5K)
10
11
12
13
14
15
0
1
2
3
4
5
6
7
8
9
TDSRAM
Address
(hex.)
8C00
9C00
8A00
8E00
9A00
9E00
8000
8200
8400
8600
8800
9000
9200
9400
9600
9800
PG3..PG0
(Hex.)
TDPR
Value
A
B
C
D
E
0
1
2
3
4
5
6
7
8
9
F
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).
ST92185B - ON SCREEN DISPLAY (OSD)
2K
6K
8K
Resolution 0.5K bytes
See
Address Values
0.5K TDSRAM
Header Char.
Status Row 0
Status Row 1
Free Space
Free Space
Figure 22
Row Attr.
for
113/178
100h