ADE3700XT View Datasheet(PDF) - STMicroelectronics

Part Name

Description

Manufacturer

ADE3700XT

Analog LCD Display Engine for XGA and SXGA Resolutions

STMicroelectronics 

Pattern Generator

Register Name

TCON_X_62

TCON_X_63

ADE3700

Table 17: TCON Registers (Sheet 7 of 7)

Addr. Mode Bits

0x0BBE R/W

[7:0]

0x0BBF R/W

[7:0]

Default

Description

0x0

input selection for SRTD_31.A

(Refer to Table 18 for definition)

0x0

input selection for SRTD_31.B

(Refer to Table 18 for definition)

Value

0x00

0x01

0x02

0x03

0x04 - 0x1F

0x20 - 0x37

0x38

Table 18: Input Selection Values

Description

0

1

External TCON input pin

I2C SRTD init bit

comp0 - comp27

SRTD8 - SRTD31

2 frame + 1 line + 2 pixel toggle

Value

0x39

0x3A

0x3B

0x3C

0x3D

0x3E

0x3F

Description

2 frame + 2 line + 1 pixel toggle

HCOUNT[0]

HCOUNT[1]

VCOUNT[0]

VCOUNT[1]

FCOUNT[0]

FCOUNT[1]

2.13

Pattern Generator

The integrated Pattern Generator gives the ability to display a set of graphic patterns to help

debugging systems and test LCD panels. It is located ahead of the color management block, so all

generated colors are subject to further transforms.

The screen can be split into a programmable grid of up to 8x8 areas. In each of these areas, it is

possible to display one of two independent programmable patterns.

2.13.1 Screen Split

A set of eight Grid registers grid0 - grid7 with eight bits each represents a block map of the grid of

8x8 blocks. Each bit of the Grid registers represents one rectangular (gridX)x(gridY) block of pixels

which covers the LCD screen display area. Within these registers, a 0 selects Pattern 0 (defined

below) and a 1 selects Pattern 1.

All cells have the same size, defined by one horizontal and one vertical grid block size registers

gridX and gridY.

When the programmed block size is such that the complete 8x8 grid is larger than the total screen

area, only the blocks or part of blocks that are included in the output screen space are rendered.

The 8x8 block set is upper left justified, such that all blocks on the right and bottom sides that are

outside of the total display area are not rendered.

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