ADE3700XT 查看數據表（PDF） - STMicroelectronics

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ADE3700XT

Analog LCD Display Engine for XGA and SXGA Resolutions

STMicroelectronics 

LCD Scaler

Register Name

DMEAS_SCR_PAD_0

DMEAS_SCR_PAD_1

DMEAS_SCR_PAD_2

DMEAS_SCR_PAD_3

DMEAS_SCR_PAD_4

DMEAS_SCR_PAD_5

DMEAS_SCR_PAD_6

DMEAS_SCR_PAD_7

DMEAS_SCR_PAD_8

DMEAS_SCR_PAD_9

DMEAS_SCR_PAD_10

DMEAS_SCR_PAD_11

DMEAS_SCR_PAD_12

DMEAS_SCR_PAD_13

DMEAS_SCR_PAD_14

DMEAS_SCR_PAD_15

ADE3700

Table 14: Data Measurement Registers (Sheet 3 of 3)

Addr

0x0934

0x0916

0x0917

0x0918

0x0919

0x091A

0x091B

0x091C

0x091E

0x091F

0x0920

0x0921

0x0922

0x0923

0x0924

0x0925

Mode Bits

R

[7:0]

R/W

[7:0]

R/W

[7:0]

R/W

[7:0]

R/W

[7:0]

R/W

[7:0]

R/W

[7:0]

R/W

[7:0]

R/W

[7:0]

R/W

[7:0]

R/W

[7:0]

R/W

[7:0]

R/W

[7:0]

R/W

[7:0]

R/W

[7:0]

R/W

[7:0]

Default

Description

0x0

Scratch Pad Registers

2.10

LCD Scaler

The LCD Scaler module resizes images from one resolution to another. It employs a 3x3 non-

separable scaling filter which performs a dot product of the input pixel values with a weighting

vector that is computed from the chosen filtering function. To sharpen text without introducing

excessive artifacts, the output pixel’s contrast level is adjusted based on the context value

measured over a 3x3 grid in the relevant area of the source image.

For proper scaler operation, the SCLK frequency must be set greater than the max of DCLK and

IN_HPIXEL x DCLK_FREQ / (DEST_HPIXEL x PIXEL_AVG).

Table 15: LCD Scaler Registers (Sheet 1 of 3)

Register Name

SCL_SRC_HPIX_L

SCL_SRC_HPIX_H

SCL_SRC_VPIX_L

SCL_SRC_VPIX_H

SCL_SCALEFACH_L

SCL_SCALEFACH_M

SCL_SCALEFACH_H

SCL_SCALEFACV_L

SCL_SCALEFACV_H

Addr

0x0A01

0x0A02

0x0A03

0x0A04

0x0A05

0x0A06

0x0A07

0x0A08

0x0A09

Mode Bits

R/W

[7:0]

R/W

[7:0]

R/W

[7:0]

R/W

[7:0]

R/W

[7:0]

R/W

[7:0]

R/W

[0]

R/W

[7:0]

R/W

[7:0]

Default

Description

0x0

Input Horizontal Resolution

Bits [3:0] must be set to zero.

0x0

Input Vertical Resolution

Bits[3:0] must be set to 0.

0x0

17-bit Horizontal Scale Factor = (in_hpixel

<< 16) / dest_hpixel + 0.5

0x0

0x0

0x0

16-bit Vertical Scale Factor = (in_vpixel <<

15) / dest_vpixel + 0.5

0x0

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