THC7984 Datasheet, PDF (25/45 Pages) THine Electronics, Inc. – 10-bit 3-channel Video Signal Digitizer

THC7984_Rev.2.0_E
< Clamp Pulse Start Position / Pulse Width >
HSYNC / CSYNC / Sync on Video (2-level)
Input HSYNC
Clamp Pulse (R17[6]=0)
Start Position
Clamp Pulse (R17[6]=1)
Sync on Video (3-level)
Start Position
Pulse Width
Input HSYNC
Clamp Pulse (R17[6]=0)
Clamp Pulse (R17[6]=1)
Start Position
Start Position
Pulse Width
R1A[6] SOG Slicer Hysterisis Enable
1: SOG Slicer works with about 30mV hysteresis.
R1A[5:4] SOG Input Filter
SOG Input Filter (low pass filter) can reduce the noise and the ringing, etc. of SOG input.
00b: OFF (Through)
01b: ON
10b,11b: Reserved
*The default value is 10b(Reserved) , so please change the setting to 00b (OFF) or 01b (ON) .
R1A[3:0] SOG Slicer threshold
When Input Sync Type Select is set to “Sync on Video (2-level) ” (R12[1:0]=10b) , input signal from SOGIN0 or
SOGIN1 is sliced at the selected level by R1A[3:0] relative to the lowest level (sync tip) to extract the sync signal.
SOG slicer threshold can be adjusted from15 mV to 240 mV in steps of 15 mV.
*Set the value of SOG Slicer threshold to 3 and over.
SOG Slice Level (R1A[3:0])
Sync on Video
Extracted Sync
< SOG Slicer >
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