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STV2050A Datasheet(PDF) 36 Page - STMicroelectronics

Part # STV2050A
Description  AUTOMATIC MULTISCAN DIGITAL CONVERGENCE PROCESSOR
PDF  83 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STV2050A Datasheet(HTML) 36 Page - STMicroelectronics

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STV2050A - VIDEO PATTERN GENERATOR
Figure 18. Vertical Grid Adjustment
If the VGP bit is programmed to 0, the grid starts with the first line following the two lines that
are reserved for the register update procedure.
The allowed range for the VGP is included between the 0 and 511 video lines.
7.3 CURSOR
7.3.1 Cursor Size
The cursor is available in different shapes. The shape is selected by the PAS[3] cursor-type bit
in the EA register.
7.3.2 Cursor Position
The position of the cursor is determined by the most recent write command on the I²C bus.
The embedded RAM addresses of dynamic convergence correction values correspond di-
rectly to grid positions on the screen. They represent cursor positions as well.
If the CPV (Cursor Position Vertical) value exceeds the 0...C(hex) range, the cursor is not dis-
played.
If a new write address is within the accepted grid range (after having exceeded the range), the
cursor pattern is re-displayed (unless the cursor display is turned off).
PAS[3]
0: Small Cursor
1: Large Cursor
12
0
1
2
3
4
5
6
visible
screen
area
V-Retrace
VGP+2
VGD



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