SDA6000 Datasheet, PDF (297/380 Pages) Infineon Technologies AG – Teletext Decoder with Embedded 16-bit Controller

SDA 6000
Display Generator
10.4.1 Input Formats
The following figures describe how bitmaps for different input bit map formats are stored
in the source memory area . The 16-bit format is described in Figure 10-12.
bit_7 bit_6 bit_5 bit_4 bit_3 bit_2 bit_1 bit_0 bit_7 bit_6 bit_5 bit_4 bit_3 bit_2 bit_1 bit_0
Memory Addr. = n
Byte Address n+1
Byte Address n
Pixel Pixel Pixel Pixel Pixel Pixel Pixel Pixel Pixel Pixel Pixel Pixel Pixel Pixel Pixel Pixel
8 9 10 11 12 13 14 15 0 1 2 3 4 5 6 7
Memory Addr. = n+2
Pixel
24
Pixel
25
Pixel
26
Pixel
27
Pixel
28
Pixel
29
Pixel
30
Pixel
31
Pixel
16
Pixel
17
Pixel
18
Pixel
19
Pixel
20
Pixel
21
Pixel
22
Pixel
23
Byte Address n+3
Byte Address n+2
UED11174
Figure 10-5 Format of 1-bitplane Bitmap
Note: The 1-bitplane format is used to address vectors 1 … 0 of CLUT1.
bit_7 bit_6 bit_5 bit_4 bit_3 bit_2 bit_1 bit_0 bit_7 bit_6 bit_5 bit_4 bit_3 bit_2 bit_1 bit_0
Memory Addr. = n
Byte Address n+1
Byte Address n
Pixel Pixel Pixel Pixel Pixel Pixel Pixel Pixel Pixel Pixel Pixel Pixel Pixel Pixel Pixel Pixel
4/Bit1 4/Bit0 5/Bit1 5/Bit0 6/Bit1 6/Bit0 7/Bit1 7/Bit0 0/Bit1 0/Bit0 1/Bit1 1/Bit0 2/Bit1 2/Bit0 3/Bit1 3/Bit0
Memory Addr. = n+2
Pixel Pixel Pixel/ Pixel/ Pixel Pixel Pixel Pixel
12/Bit1 12/Bit0 13/Bit1 13/Bit0 14/Bit1 14/Bit0 15/Bit1 15/Bit0
Pixel
8/Bit1
Pixel
8/Bit0
Pixel
9/Bit1
Pixel Pixel Pixel Pixel Pixel
9/Bit0 10/Bit1 10/Bit0 11/Bit1 11/Bit0
Byte Address n+3
Byte Address n+2
UED11175
Figure 10-6 Format of 2-bitplane Bitmap
Note: The 2-bitplane format is used to address vectors 3 … 0 of CLUT1.
bit_7 bit_6 bit_5 bit_4 bit_3 bit_2 bit_1 bit_0 bit_7 bit_6 bit_5 bit_4 bit_3 bit_2 bit_1 bit_0
Memory Addr. = n
Byte Address n+1
Byte Address n
Pixel Pixel Pixel Pixel Pixel Pixel Pixel Pixel Pixel Pixel Pixel Pixel Pixel Pixel Pixel Pixel
2/Bit3 2/Bit2 2/Bit1 2/Bit0 3/Bit3 3/Bit2 3/Bit1 3/Bit0 0/Bit3 0/Bit2 0/Bit1 0/Bit0 1/Bit3 1/Bit2 1/Bit1 1/Bit0
Memory Addr. = n+2
Pixel Pixel
6/Bit3 6/Bit2
Pixel Pixel Pixel Pixel
6/Bit1 6/Bit0 7/Bit3 7/Bit2
Pixel Pixel Pixel Pixel Pixel Pixel Pixel Pixel
7/Bit1 7/Bit0 4/Bit3 4/Bit2 4/Bit1 4/Bit0 5/Bit3 5/Bit2
Pixel Pixel
5/Bit1 5/Bit0
Byte Address n+3
Byte Address n+2
UED11176
Figure 10-7 Format of 4-bitplane Bitmap
Note: The 4-bitplane format is used to address vectors 15 … 0 of CLUT1.
Users Manual
10 - 12
2000-06-15