STV2050A STMicroelectronics, STV2050A Datasheet - Page 37

• Manufacturer Part Number: STV2050A
• Description: IC DGTL CONVERGENCE PROC 80-PQFP
• Manufacturer: STMicroelectronics
• Type: Videor

Specifications of STV2050A

• Applications: HDTV
• Mounting Type: Surface Mount
• Package / Case: 80-MQFP, 80-PQFP
• Case: QFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

7.4 BORDER LINES
Convergence adjustments at the edges of the screen are more difficult because the grid points
which are involved are not visible. Therefore, additional horizontal and vertical border lines are
implemented for making adjustments at these positions.
7.4.1 Border Lines: Left / Right
The horizontal position of the border lines is programmable by the BPH[5:0] bits in the D7 reg-
ister.
Figure 19. Border Lines
Note: The BPH bit must be smaller than the HGD bit.
7.4.2 Border Lines: Bottom / Top
The vertical position of the border lines depends on bits BPV[5:0] in register D7.
01h to 1Fh
01h to 1Fh
00h
00h
15
0
The position of the border lines is identical to the vertical grid lines at horizon-
tal grid positions 1 and 15
The border lines move toward the centre of the screen in increments of BPH
clock cycles. The range for the shift of the border line is one horizontal grid
distance.
The position of the horizontal border lines is identical to the horizontal grid lines at posi-
tions 0 and 12.
The horizontal border lines move toward the centre of the screen by BPV video lines.
The allowed range for the BPV value is one vertical grid distance.
1
2
BPH
3
4
5
6
7
Borderlines
Grid
8
STV2050A - VIDEO PATTERN GENERATOR
9
10
11
12
13
BPH
14
15
0
1
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