ade3800 STMicroelectronics, ade3800 Datasheet - Page 25

• Manufacturer Part Number: ade3800
• Description: Analog Lcd Display Engine For Xga And Sxga Resolutions With Embedded Lvds And Rsds Transmitters
• Manufacturer: STMicroelectronics

ADE3800
The 4 delay counters measure the time (in XCLKs) between the leading and trail edges of the SOG
signals, as follows:
d1: delay count from SOG[2] falling edge to SOG[1] falling edge
d2: delay count from SOG[1] falling edge to SOG[0] falling edge
d3: delay count from SOG[0] rising edge to SOG[1] rising edge
d4: delay count from SOG[1] rising edge to SOG[2] rising edge
If there is no leading edge for a particular delay counter, the result is 0.
If both edges are within the same XCLK period, the result is 1.
When the counter reaches a value of 0F, it stops.
The delay and activity registers are used together to tune the SOG sampling level.
The delay measurements are controlled by the activity detection control registers which may be
used to select either:
●
●
One-shot: one sync pulse measurement; when done, hold result until next measurement is
started; or
Free-run: continuously measures, results are dynamically updated.
Register Description by Block
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