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GS2971 Datasheet(PDF) 49 Page - Semtech Corporation |
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GS2971 Datasheet(HTML) 49 Page - Semtech Corporation |
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49 / 148 page  GS2971 3Gb/s, HD, SD SDI Receiver Data Sheet 45898 - 2 September 2012 49 of 148 4.12 H:V:F Timing Signal Generation The GS2971 extracts critical timing parameters from the received TRS words. Horizontal blanking (H), Vertical blanking (V), and Field odd/even (F) timing are output on the STAT[2:0] pins by default. Using the H_CONFIG bit in the host interface, the H signal timing can be selected as one of the following: 1. Active line blanking (H_CONFIG = LOW) - the H output is HIGH for the horizontal blanking period, including the EAV TRS words. 2. TRS based blanking (H_CONFIG = HIGH) - the H output is set HIGH for the entire horizontal blanking period as indicated by the H bit in the received TRS signals. The timing of these signals is shown in Figure 4-11, Figure 4-12, Figure 4-13, Figure 4-14, Figure 4-15, Figure 4-16 and Figure 4-17 below. NOTE: Both 8-bit and 10-bit TRS words are identified by the device. Figure 4-11: H:V:F Output Timing - 3G Level A and HDTV 20-bit Mode Figure 4-12: H:V:F Output Timing - 3G Level A and HDTV 10-bit Mode 3G Level B 20-bit Mode, each 10-bit stream PCLK LUMA DATA CHROMA DATA H 000 000 3FF 000 000 3FF V F XYZ (SAV) 000 000 3FF 000 000 3FF XYZ (SAV) XYZ (EAV) XYZ (EAV) 000 000 3FF 3FF 000 000 PCLK (HD) H V F MULTIPLEXED Y’CbCr DATA (HD) MULTIPLEXED DS1/DS2 DATA (3G) PCLK (3G DDR) 000 000 3FF 3FF 000 000 XYZ (EAV) MULTIPLEXED Y’CbCr DATA (HD) MULTIPLEXED DS1/DS2 DATA (3G) H V F PCLK (HD) PCLK (3G DDR) H S IGN A L T IM IN G : H_ C O NF IG = L O W H _ C ONF IG = H IGH HVF T IM IN GAT SAV HVF T IM IN GAT EAV XYZ (EAV) XYZ (SAV) XYZ (SAV) |
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