參數(shù)資料
型號(hào)： ST92186B3BK
廠商： STMICROELECTRONICS
元件分類： 微控制器/微處理器
英文描述： 16-BIT, MROM, 24 MHz, MICROCONTROLLER, PDIP32
封裝： PLASTIC, SDIP-32
文件頁數(shù)： 17/148頁
文件大?。?/td> 1664K
代理商： ST92186B3BK
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ST92186B - ON SCREEN DISPLAY CONTROLLER (OSD)
OSD CONTROLLER (Cont’d)
7.4.7.8 Row buffer Management
To Start the Display:
0. Write the (DION, OSDE) bits to (1,0) to access
the OSDRAM with the CPU clock,
1. Initialize the color palettes,
2. Initialize the “first buffer start address” with the
address of the first byte of the above Row
Buffer (address 0002h & 0003h of the segment
22h),
3. Fill up one of the row buffers with the data to
display the desired row (only in case the TE bit
in the OSDER register has been set),
4. Initialize the Event Line value to the desired
one (address 0000h & 0001h of the segment
22h),
5. Start the Display controller by programming the
mode control bits (DION, OSDE) and the trans-
fer enable bit (TE) to the desired working mode.
It is mandatory to start the display following the
algorithm below:
1
unsigned char tmp;
spp(OSD_PG);
/* select the OSD register page */
OSDFBR &= ~0x06;
/* reset DINT & MOIT bits */
5
while (OSDFBR & OSDm_Vsy);
/* wait a Low to High transition on VSYNC */
while (!(OSDFBR & OSDm_Vsy));
tmp= OSDMR;
/* save LSM bits */
10
OSDMR &= ~0x07;
/* reset the LSM bits so that the Hsy bit will be an image of the HSYNC pulse */
OSDER = 0x40;
/* OSDRAM interface enabled with PIXEL clock */
di();
/* disable all interrupts */
15
while (OSDFBR & OSDm_Hsy);
/* wait a HSYNC pulse : Low -> High -> Low transition */
while (!(OSDFBR & OSDm_Hsy));
while (OSDFBR & OSDm_Hsy);
20
OSDMR = tmp;
/* recover old LSM bit value */
spp(OSD_PG);
/* select the OSD register page */
OSDER |= 0xE0;
/* start the display by setting the appropriate bits,
set at least OSDE, DION, and TE bits. Then set the other bits as required
25
for your application. */
ei();
/* enable interrupts again*/
相關(guān)PDF資料
PDF描述
ST92195B2T1/XXX 16-BIT, MROM, 24 MHz, MICROCONTROLLER, PQFP64
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ST92195B4B1/XXX 16-BIT, MROM, 24 MHz, MICROCONTROLLER, PDIP56
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
ST92195 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:32-64K ROM HCMOS MCU WITH ON-SCREEN-DISPLAY AND TELETEXT DATA SLICER
ST92195B 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:32-64K ROM HCMOS MCU WITH ON-SCREEN-DISPLAY AND TELETEXT DATA SLICER
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ST92195B1B1 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:32-64K ROM HCMOS MCU WITH ON-SCREEN-DISPLAY AND TELETEXT DATA SLICER
ST92195B1T1 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:32-64K ROM HCMOS MCU WITH ON-SCREEN-DISPLAY AND TELETEXT DATA SLICER
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