參數(shù)資料
型號(hào)： STV9937
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)： 28/49頁(yè)
文件大?。?/td> 441K
代理商： STV9937
RAM Specification
STV9937
28/49
The default window RAM allocations are listed in
Table 31
.
Window 1: 10 blocks of 32 words = 320 characters (ALW1 = 9).
Window 2: 4 blocks of 32 words = 128 characters (ALW2 = 3).
Window 3: 3 blocks of 32 words = 96 characters (ALW3 = 2).
Window 4: the remaining RAM (3 blocks = 96 characters).
5.4
Window Reset
All the RAM data from one of the four OSD windows can be reset by writing to bits RESETW[3:0].
When the RESETW bit is set to 1, all the RAM data in the allocation memory space of the
corresponding OSD window is reset. These bits are automatically cleared when the RAM allocation
reset is finished.
Table 31: Window RAM Default Values
ALWi
Default
Description
ALW1
9h
320 Characters (10 blocks)
ALW2
3h
128 Characters (4 blocks)
ALW3
2h
96 Characters (3 blocks)
Table 32: RAM Allocation Enable and Reset
FWR
FAC
Default
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
80h
0Bh
0h
RESETW[3:0]
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