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)： 42/49頁(yè)
文件大?。?/td> 441K
代理商： STV9937P
Application Hints
STV9937
42/49
10
Application Hints
10.1
Software Hints
10.1.1 Programming Recommendations
1. Write a new allocation just before the RAM reset.
2. Write a new allocation at any time but take care of the window display.
3. When resetting the RAM and writing in it just after, write in the RAM respecting the same order
as the reset: from the first to the last reset window, from the first window address (row 0, col 0)
to the last, incrementing columns, then rows, then windows.
4. Define the window horizontal size prior to writing character and color codes in RAM.
HSWI is used to compute the RAM address.
10.1.2 Examples of Programming
It is recommended to program the STV9937 in the following sequence:
●
Via RGB Video mode
set ENPB =1
send data via RGB Video: Y then X coordinates.
●
Via I2C mode
set ENPB =1, PBVM=1, PBON =0
send data via I2C: X and Y coordinates.
set PBON =1
●
Changing the mode
set PBON = 0
change PBVM bit
write new coordinates, then the PBON can be set to 1.
Hard reset at power-up
(following a power-up)
1. Write Window 0 registers to set the OSD parameters: write
VCO[1:0], horizontal resolution and vertical height of characters,
the position of reference,
the allocations if they are incorrect
(by default: 320 characters for window 1, 128 characters for each of the others windows)
the windows position and size,
the color-boxes that will be used.
2. Write the character codes for each window to display.
3. Write the color-box data for each window to display.
4. Write the enable of windows: ENWi = 1 then ENOSD=1.
Change of position & size of 1 window (ex. window 3) without disable of window
1. Write new position and sizes.
2. Write new characters in the RAM.
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
STV9937P/AA 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:120-MHz On-Screen Display for Monitors including PictureBooSTTM and 4 True Independent Window Displays
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