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STV9937

Picture BooSTTM

7.2

PictureBooSTTM RGB Decoder

The STV9937 can receive the coordinates of the area to BooST through the RGB channel or

through I²C bus.

The Picture BooSTTM area coordinates are coded as follows:

7.2.1

Data Sent Using I²C

Before sending data to the corresponding registers, the PBVM bit must be set to 1. Then the

coordinates can be sent to the corresponding address, see Table 36:

●

Row 1, Col 3 to 6 for X1, X2 coordinates

●

Row 1, Col 7 to 10 for the Y1, Y2 coordinates.

7.2.2

Data Sent Using the RGB Channel

The Picture BooSTTM Software sends coordinate data through the RGB channel:

●

The Red channel contains the X1, X2 and Y1, Y2 coordinates information

●

The Green Channel contains a specific activation code

●

The Blue Channel contains the clock signal.

The Decoder stores the coordinates values to the corresponding address:

●

Row 1, Col 3 to 6 for X1, X2 coordinates

●

Row 1, Col 7 to 10 for the Y1, Y2 coordinates.

X1 and X2 are referred to the HSYNC signal, the resolution is FPIXEL1 (from 30 Mhz to 60 Mhz)

Table 35: PictureBooSTTM Window Coordinates

Bits

Description

X1[12:0]

Left coordinate of the window, in CLK1 pixels (FPIXEL1)

X2[12:0]

Right coordinate of the window, in CLK1 pixels

Y1[10:0]

Top coordinate of the window, in lines

Y2[10:0]

Bottom coordinate of the window, in lines

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