GS1532 Gennum Corporation, GS1532 Datasheet - Page 30

• Manufacturer Part Number: GS1532
• Description: Serializer For HD-SDI, Sd-sdi & DVB-ASI. 3.3/1.8V Supply.
• Manufacturer: Gennum Corporation

The flywheel 'learns' the video standard by timing the
horizontal and vertical reference information contained in
the TRS ID's of the received video data. It will there for take
one video frame to obtain full synchronization of the
flywheel to the received video standard.
Once synchronization has been achieved, the flywheel will
continue to monitor the received TRS timing or the supplied
H:V:F timing information to maintain synchronization.
3.5 H:V:F TIMING SIGNAL GENERATION
As discussed in Section 3.5, the internal flywheel may be
locked to supplied H:V:F signals when DETECT_TRS =
LOW.
GENNUM CORPORATION
MULTIPLEXED Y Cr/Cb DATA INPUT
CHROMA DATA INPUT
LUMA DATA INPUT
MULTIPLEXED Y Cr/Cb DATA INPUT
H SIGNAL TIMING:
MULTIPLEXED Y Cr/Cb DATA INPUT
PCLK
PCLK
H_CONFIG = LOW
H_CONFIG = HIGH
H
V
F
CHROMA DATA INPUT
LUMA DATA INPUT
H
V
F
3FF
3FF
PCLK
3FF
PCLK
H
V
F
PCLK
H
V
F
H
V
F
000
000
000
3FF
000
3FF
000
000
3FF
000
Fig. 15 HVF Output Timing
000
(eav)
XYZ
HVF TIMING AT EAV - HDTV 10-BIT INPUT MODE
HVF TIMING AT SAV - HDTV 10-BIT INPUT MODE
(eav)
(eav)
3FF
XYZ
XYZ
3FF
HVF TIMING - HDTV 20-BIT INPUT MODE
HVF TIMING - SDTV 20-BIT INPUT MODE
HVF TIMING - SDTV 10-BIT INPUT MODE
(eav)
XYZ
30
000
000
Horizontal blanking period / active line (H), Vertical blanking
period (V), and Field odd / even (F) timing are presented to
the device on the H:V:F input pins.
Using the host interface register H_CONFIG, the H signal
input timing can be selected as one of the following:
1) Active line blanking (H_CONFIG = LOW) - the H input
should be HIGH for all the horizontal blanking period,
including the EAV and SAV TRS words.
2) TRS based blanking (H_CONFIG = HIGH) - the H input
should be set HIGH for the entire horizontal blanking period
as indicated by the H bit in the TRS words. The timing of
these signals is shown in Figure 15.
000
000
3FF
3FF
000
000
3FF
000
3FF
000
000
000
000
000
(SAV)
XYZ
000
(sav)
XYZ
000
000
(eav)
XYZ
000
(sav)
(sav)
XYZ
XYZ
XYZ
(sav)
(eav)
XYZ
(sav)
XYZ
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