SDA6000 Datasheet, PDF (321/380 Pages) Infineon Technologies AG – Teletext Decoder with Embedded 16-bit Controller

SDA 6000
Display Generator
10.7.4 Startaddress of Layer 2 (DBR)
The start address of frame buffer 2 in the memory must be set by the controller.
DBR
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
1
0
1
0
-
-
-
-
DB_ADDR(23..16)
DB_ADDR(15..0)
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
Bit
DB_ADDR
(23 … 0)
Function
Startaddress of Frame Buffer 2
Bit 23 … 0 of a byte address.
10.7.5 Size of Layer 2 (DSR)
DSR
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
1
0
1
1
-
-
HEIGHT_L2
-
-
-
-
-
WIDTH_L2
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
Bit
HEIGHT_L2
(9 … 0)
WIDTH_L2
(10 … 0)
Function
Height of Layer 2
The height of layer 2 can vary between 0 (HEIGHT_L2 = ‘0’_d) and 1023
pixels (HEIGHT_L2 = ‘1023’_d).
Width of Layer 2
The width of the layer 2 can vary between 0 (WIDTH_L2 = ‘0’_d) and
2046 pixels (WIDTH_L2 = ‘2046’_d).
Note: Width_L2 is ignored, if layer 2 is displayed in 2-bit CLUT2 vector
format. In this case width_L2 is set to 64.
Users Manual
10 - 36
2000-06-15