STV2050A datasheet(36/83 Pages) STMICROELECTRONICS

tên linh kiện	STV2050A

Giải thích chi tiết về linh kiện	AUTOMATIC MULTISCAN DIGITAL CONVERGENCE PROCESSOR

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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

visible

screen

area

V-Retrace

VGP+2

VGD

STV2050A bảng dữ liệu(PDF) 36 Page - STMicroelectronics