GS1660 Datasheet, PDF (39/82 Pages) Semtech Corporation – HD/SD SDI Receiver Complete with SMPTE Video Processing

4.11 H:V:F Timing Signal Generation
The GS1660 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 the figures below.
NOTE: Both 8-bit and 10-bit TRS words are identified by the device.
PCLK
LUMA DATA
CHROMA DATA
H
V
F
3FF
000
000 XYZ (EAV)
3FF
000
000 XYZ (EAV)
3FF
000
000 XYZ (SAV)
3FF
000
000 XYZ (SAV)
Figure 4-5: H:V:F Output Timing - HDTV 20-bit Mode
PCLK (HD)
MULTIPLEXED Y’CbCr DATA (HD)
H
V
F
3FF
3FF
000
000
000
000 XYZ (EAV) XYZ (EAV)
H VF T IM IN G A T E A V
PCLK (HD)
MULTIPLEXED Y’CbCr DATA (HD)
H
V
F
3FF
3FF
000
000
000
000 XYZ (SAV) XYZ (SAV)
H VF T IM IN G A T S A V
H S IG N A L T IM IN G :
H _C O N F IG = LO W
H _C O N F IG = H IG H
Figure 4-6: H:V:F Output Timing - HDTV 10-bit Mode
PC LK
LU M A D A T A IN P U T
C H R O M A D A T A IN P U T
H
V
F
3FF
000
3FF
000
H S IG N A L T IM IN G :
000
000
X Y Z (EAV)
X Y Z (EAV)
H _C O N F IG = LO W
3FF
000
3FF
000
H _C O N F IG = H IG H
000
000
X Y Z (SAV)
X Y Z (SAV)
Figure 4-7: H:V:F Output Timing - HD 20-bit Output Mode
GS1660 HD/SD SDI Receiver
Data Sheet
53834 - 2
September 2012
39 of 82