THC7984_15 Datasheet, PDF (41/46 Pages) THine Electronics, Inc. – 10-bit 3-channel Video Signal Digitizer

THC7984_Rev.2.0_E
R36[7]/R36[4:0] Sync Processor IRQ Output Enable by Event Recorder
1: When corresponding bit of event recorders R34[5:0] is set to 1, interrupt request is triggered. Interrupt request signal is
available from O/E FIELD-pin (R1E[3:1]=011b) .
Event Recorder
R35[7]
R35[6]
R35[5]
R35[4]
R35[3]
R35[2]
R35[1]
R35[0]
< Sync Processor IRQ Enable >
Event
Sync Signal Valid Flag
Reserved
Reserved
Port-1 Input Sync Type Change Detection
Port-0 Input Sync Type Change Detection
Input Signal Format Change
Input HSYNC Missing Edge Detection
Input HSYNC Extraneous Edge Detection
IRQ Enable
R36[7]
R36[6]
R36[5]
R36[4]
R36[3]
R36[2]
R36[1]
R36[0]
R37[7:5] Input Signal Format Change Detection---Threshold of Vertical Total Line Change
Set the change detection threshold of vertical total line for Input Signal Format Change Detection (R35[2]). When the
result of vertical total line measurement (R2E[6:0] / R2F[7:0]) change more than this value, R35[2] will be 1.
000b: 0.5 lines
001b: 1 line
010b: 2 lines
011b: 4 lines
100b: 8 lines
101b: 16 lines
110b: 32 lines
111b: Do not observe the change
R37[4:3] Input Signal Format Change Detection---Threshold of VSYNC Input Pulse Width
Set the change detection threshold of VSYNC Input Pulse Width for Input Signal Format Change Detection (R35[2]).
When the result of VSYNC Input Pulse Width measurement (R30[7:0]) change more than this value, R35[2] will be 1.
00b: 0.5 lines
01b: 1 line
10b: 4 lines
11b: Do not observe the change
R37[2:0] Input Signal Format Change Detection---Threshold of HSYNC Period
Set the change detection threshold of VSYNC Input Pulse Width for Input Signal Format Change Detection (R35[2]).
When the result of VSYNC Input Pulse Width measurement (R32[3:0]/R33[7:0]/R34[7:0]) change more than this value,
R35[2] will be 1.
000b: 8
001b: 16
010b: 32
011b: 64
100b: 128
101b: 256
110b: 512
111b: Do not observe the change
R39[7:2] Reserved *Must be set to 111111b for proper operation (Default value: 111111b)
R39[1] SOG Slicer Port 1 (SOGIN1) Power-on
R39[0] SOG Slicer Port 0 (SOGIN0) Power-on
When the SOG slicer is not used, it’s possible to be powered down.
When making only SOG slicer Port 1 to be powered down, set R39=FDh
When making only SOG slicer Port 0 to be powered down, set R39=FEh
When making both of SOG Slicer Port to be powered down, set R39=FCh.
*R38 and the registers after R39 are for test purpose. Don’t write values to these registers.
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