參數(shù)資料
型號(hào): VCT3801A
廠商: MICRONAS SEMICONDUCTOR HOLDING AG
英文描述: Video/Controller/Teletext IC Family
中文描述: 視頻/控制/圖文電視IC系列
文件頁數(shù): 55/172頁
文件大?。?/td> 2243K
代理商: VCT3801A
ADVANCE INFORMATION
VCT 38xxA
Micronas
55
3.7. Display Memory
The TPU supports a variable number of display memo-
ries, each 4 kBytes large. One bank is used to store
the display information of the selected teletext page.
The bank location can be defined with the command
DISPLAY_TTX_POINTER. Other banks can be used
to store any kind of display data in level 1 or level 2 for-
mat. Switching between these banks is fast and can be
programmed with the command DISPLAY_POINTER.
Bank switching allows generation of OSD menus with-
out affecting the teletext display.
Fig. 3–10:
Display memory organization (level 2)
Display Bank
40 Byte level 1
40 Byte level 2
full row attr.
40-bit pointer
40 Byte level 1
40 Byte level 2
full row attr.
40-bit pointer
40 Byte level 1
40 Byte level 2
full row attr.
40-bit pointer
40 Byte level 1
40 Byte level 2
full row attr.
40-bit pointer
40 Byte level 1
40 Byte level 2
full row attr.
40-bit pointer
40 Byte level 1
40 Byte level 2
full row attr.
40-bit pointer
TTX Display Bank
Row 0
Row 0
Row 1
Row 1
Row 46
Row 25
SRAM
autoincrement
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