MTL007 Просмотр технического описания (PDF) - Myson Century Inc

Номер в каталоге

Компоненты Описание

производитель

MTL007

SXGA Flat Panel Controller

Myson Century Inc 

MTL007

V/H SYNC Frequency Counter

The MTL007 can measure VSYNC/HSYNC frequency counted in proper clock and save the information in

registers. Users can read out them to calculate VSYNC/HSYNC frequency as following formulas:

fvsync = fosc / Nvsync ✕1/256

fhsync = fosc / Nhsync ✕8

,Where fvsync : VSYNC frequency

fhsync : HSYNC frequency

fosc : oscillator clock with 14.31818 MHz

Nvsync : counted number of VSYNC

Nhsync : counted number of HSYNC

V/H SYNC Presence Check

This function checks the input VSYNC, where Vpre flag is set when VSYNC is over 40Hz or cleared when

VSYNC is under 10Hz, and the input HSYNC, where Hpre flag is set when HSYNC is over 10Khz or cleared

when HSYNC is under 10Hz.

V/H Polarity Detect

This function detects the input VSYNC/HSYNC high and low pulse duty cycles. If the high pulse duration is

longer than that of the low pulse, the negative polarity is asserted; otherwise, positive polarity is asserted.

Composite SYNC separation/insertion

The MTL007 continuously monitors the input HSYNC. If the input VSYNC can be extracted from it, a CVpre flag

is set. The MTL007 can insert HSYNC pulse during Composite VSYNC’s active time and the insertion frequency

can adapt to original HSYNC’s.

viii) Auto Tune

Auto Tune function consists of Auto Position automatically centering the screen and Auto Calibration containing

Phase Calibration, Histogram, Min/Max Value, and Pixel Grab described as below. With this auto adjustment

support, it is possible to measure the correct phase, frequency, gain, and offset of ADC. The horizontal and

vertical back porches of input image and the horizontal and vertical active regions can also be measured.

Firmware can adjust input image registers automatically by reading Auto Tune’s registers in single or burst

mode.

Auto Position

The MTL007 provides Horizontal/Vertical back porch and active region values. Users can use these values to

set input sample registers to aid in centering the screen automatically.

Phase Calibration

The MTL007 provides Auto Calibration registers to measure the quality of current ADC’s phase and frequency.

The biggest Auto Calibration registers value means the right value of ADC’s phase and frequency. The MTL007

has two kinds of algorithms to calculate Auto Calibration’s value. One is traditional Difference method; the other

is MYSON’s proprietary method. It is suggested to use the latter one for better performance.

page 7 of 65

Share Link: