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STV3550 数据表(PDF) 41 Page - STMicroelectronics

部件名 STV3550
功能描述  LCD and Matrix Display TV Processor
PDF  144 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

STV3550 数据表(HTML) 41 Page - STMicroelectronics

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Graphics Functional Description
STV3550
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4.1.4.1 Header Format
The header is a block of nine 32-bit words dedicated to a single specification (i.e. one OSD region
on the screen). Figure 31 shows the header mapping, with each line representing a 32-bit word.
Address Pointers
The address of the first byte (in the SDRAM) of the first color which will be loaded from the palette
to the OSD CLUT is defined in bits Palettep[31:0]. If a new palette (CLUT programmed in the
SDRAM) must be loaded when the OSD displays a new OSD region, the New Palette (NP) bit must
be set.
Figure 30: Field Storage Formats
Figure 31: OSD Header Mapping
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9
8
7
6
5
4
3
2
1
0
1
Reserved
PNDL[11:0]
Gain[5:0]
MiMo
[1:0]
FM
[1:0]
2
Reserved
Pitch[12:0]
NCL[7:0]
CLUTAdd[7:0]
3
Offset[9:0]
TPND[21:0]
4 Rd
MiW[7:0]
Y_bottom[10:0]
X_left[11:0]
5
MiGa[8:0]
Y_top[10:0]
X_right[11:0]
6
Bottomp[31:0]
7
Topp[31:0]
8
Palettep[31:0]
9
OSDp[31:0]
Free Space
Bottom Field Block
Free Space
Header
Free Space
Top Field Block
Free Space
Palette
Field-Based Format
Free Space
Free Space
Header
Field Block
Free Space
Palette
Free Space
Free Space
Header
Free Space
Palette
Frame-Based Format
Topp[31:0] = Bottomp[31:0]
Topp1
Topp2
Bottomp1
Bottomp2
Topp2 = Topp1 + Pitch value
Pitch value = 2 x PNDL value
Line-Based Format



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