THC7984_15 Datasheet, PDF (34/46 Pages) THine Electronics, Inc. – 10-bit 3-channel Video Signal Digitizer

THC7984_Rev.2.0_E
R1E[3:1] O/E FIELD Output Signal Select
Select a output signal from O/E FIELD-pin.
000b: FO --- Odd / Even FIELD generated from the HSYNC and VSYNC input, and synchronous with the PLL clock.
Output polarity (R1E[0]) can be select by the register setting. PLL parameter settings (R02 to R04) are necessary for
normal output. It is synchronous with VO.
001b: Regenerated FIELD --- Odd / Even FIELD generated from the HSYNC and VSYNC input, and synchronous with
the internal oscillator clock (approximately 40 MHz) . Output polarity (R1E[0]) can be selected by the register setting.
PLL parameter settings (R02 to R04) are unnecessary for normal output. It has jitter of several internal oscillator clock
cycles. It is synchronous with Regenerated VSYNC.
010b: DE --- Data Enable signal generated from the HSYNC and VSYNC input, and synchronous with the PLL clock.
The polarity is Active-High. Start Position (R26[3:0]/R27[7:0]) , Pulse Width(R28[3:0]/R29[7:0]) , Vertical Blank Front
Porch (R2A[6:0]) and Back Porch (R2B[6:0]) are programmable by registers (auto setting modes are not available) .
011b: IRQ --- Interrupt Request Signal from Sync Processor.
100b - 111b: Reserved
< FO / Regenerated FIELD>
Horizontal Period
VSYNC Input
FO
Regenerated FIELD
R1E[0] O/E FIELD Output Polarity
Select the polarity of FO and Regenerated FIELD available from O/E FIELD-pin
0: O/E FIELD=Low in Odd FIELD, O/E FIELD=High in Even FIELD.
1: O/E FIELD=High in Odd FIELD, O/E FIELD=Low in Even FIELD.
< FO / Regenerated FIELD>
EVEN Field -> ODD Field Horizontal Period
Sync Input
FIELD (R1E[0]=0)
FIELD (R1E[0]=1)
ODD Field -> EVEN Field
Input Sync
Horizontal Period
FIELD (R1E[0]=0)
FIELD (R1E[0]=1)
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