參數(shù)資料
型號(hào)： STV9937P
廠商： 意法半導(dǎo)體
英文描述： 120-MHz On-Screen Display for Monitors including PictureBooSTTM and 4 True Independent Window Displays
中文描述： 120 - MHz的屏幕的顯示器，其中包括PictureBooSTTM和4個(gè)真正的獨(dú)立的窗口顯示顯示
文件頁(yè)數(shù)： 21/49頁(yè)
文件大小： 441K
代理商： STV9937P
21/49
STV9937
Character Specifications
The range of the vertical height is from 18 to 127 lines.
CH[6:0] = Number of scan lines used to display the characters
The characters stored in ROM are coded on 18 lines. If bits CH[6:0] are programmed with a value
less than 18, the characters will be automatically displayed with a height of 18 scan lines (minimum
value).
When a multiple of 18 scan lines are displayed, all ROM lines are repeated N number of times, with
N in the range of 1 to 7, so as not to exceed the display of 127 scan lines. For example, if CH[6:0] =
36, each ROM line is repeated twice.
If the number of scan lines displayed is not a multiple of 18, certain ROM lines are repeated more
often than others, as shown in
Table 21
. For example, if CH[6:0] = 40, each ROM line is repeated
twice and ROM lines 3, 7, 10 and 14 are repeated three times.
Table 21
shows which ROM lines, from 0 to 17, are repeated depending on the CH[6:0] value.
4.4
Space Lines
The space lines define the number of scan lines above and below each character row. This value is
selected by bits RSPA[4:0]. The total row height is defined as follows:
Row_Height = Character_Height + 2 x Space_Lines (see
Figure 9
)
Table 21: Repeated ROM Lines
1
1. ‘R’ = Repeated ROM lines
‘A’ = Number of additional repeated lines
CH Value
A
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18, 36, 54, 72, 90, 108, 126
0
19, 37, 55, 73, 91, 109, 127
1
R
20, 38, 56, 74, 92 ,110,
2
R
R
21, 39, 57, 75, 93, 111
3
R
R
R
22, 40, 58, 76, 94, 112
4
R
R
R
R
23, 41, 59, 77, 95, 113
5
R
R
R
R
R
24, 42, 60, 78, 96, 114
6
R
R
R
R
R
R
25, 43, 61, 79, 97, 115
7
R
R
R
R
R
R
R
26, 44, 62, 80, 98, 116
8
R
R
R
R
R
R
R
R
27, 45, 63, 81, 99, 117
9
R
R
R
R
R
R
R
R
R
28, 46 ,64, 82, 100, 118
10
R
R
R
R
R
R
R
R
R
R
29, 47, 65, 83, 101, 119
11
R
R
R
R
R
R
R
R
R
R
R
30, 48, 66, 84, 102, 120
12
R
R
R
R
R
R
R
R
R
R
R
R
31, 49, 67, 85, 103, 121
13
R
R
R
R
R
R
R
R
R
R
R
R
R
32, 50, 68, 86, 104, 122
14
R
R
R
R
R
R
R
R
R
R
R
R
R
R
33, 51, 69, 87, 105, 123
15
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
34, 52, 70, 88, 106, 124
16
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
35, 53, 71, 89, 107, 125
17
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
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