SDA6000 Datasheet, PDF (322/380 Pages) Infineon Technologies AG – Teletext Decoder with Embedded 16-bit Controller

SDA 6000
Display Generator
10.7.6 Display Coordinates of Layer 2 (DCR)
This instruction is used to place layer 2 in layer 1. By these coordinates the left top corner
of layer 2 is placed in relation to the top left corner of layer 1. In this sense the coordinate
ULY = 0/ULX = 0 is identical to the top left corner of layer 1. Negative coordinates are
also supported so it is also possible to move a layer 2 window from the top or left side of
a layer 1 window.
DCR
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
1
1
0
0
-
ULY(10..0)
-
-
-
-
ULX(11..0)
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
Bit
ULY
(10 … 0)
ULX
(11 … 0)
Function
Upper left corner Y-coordinate
in one’s complement representation:
‘11111111111’ = ‘– 1023_D’
…
‘10000000000’ = ‘– 0_D’
‘00000000000’ = ‘+ 0_D’
…
‘01111111111’ = ‘+ 1023_D’
Upper left corner X-coordinate
in one’s complement representation:
‘111111111111’ = ‘– 2046_D’
…
‘100000000000’ = ‘– 0_D’
‘000000000000’ = ‘+ 0_D’
…
‘011111111111’ = ‘+ 2046_D’
Users Manual
10 - 37
2000-06-15