GS1559 Gennum Corp., GS1559 Datasheet - Page 36

• Manufacturer Part Number: GS1559
• Description: GS1559 HD-LINX-TM II Multi-Rate Deserializer with Loop-Through Cable Driver
• Manufacturer: Gennum Corp.

Video source 1
Video source 2
Video source 1
Video source 2
Flywheel TRS
Flywheel TRS
FW_EN/DIS
FW_EN/DIS
DATA OUT
DATA OUT
DATA IN
position
DATA IN
position
EAV
EAV
EAV
EAV
EAV
EAV
EAV
EAV
ANC
ANC
ANC
ANC
ANC
ANC
ANC
ANC
SAV
SAV
SAV
SAV
SAV
SAV
SAV
SAV
ACTIVE PICTURE
ACTIVE PICTURE
ACTIVE PICTURE
ACTIVE PICTURE
Figure 4-2: Switch Line Locking
The ability to manually re-synchronize the flywheel is also important when
switching asynchronous sources or to implement other non-standardized video
switching functions.
The GS1559 also implements automatic switch line lock handling. By utilizing the
synchronous switch points defined by SMPTE RP168 for all major video standards
with the automatic video standards detect function, the device automatically
re-synchronizes the flywheel at the switch point.
This function will occur regardless of the setting of the FW_EN/DIS pin.
The switch line is defined as follows:
•
•
•
•
30572 - 4
ACTIVE PICTURE
ACTIVE PICTURE
ACTIVE PICTURE
ACTIVE PICTURE
For 525 line interlaced systems: re-sync takes place at the end of lines 10 &
273.
For 525 line progressive systems: re-sync takes place at the end of line 10.
For 625 line interlaced systems: re-sync takes place at the end of lines 6 &
319.
For 625 line progressive systems: re-sync takes place at the end of line 6.
EAV
EAV
EAV
EAV
July 2005
EAV
EAV
EAV
EAV
ANC
ANC
ANC
ANC
ANC
ANC
ANC
ANC
SAV
SAV
SAV
SAV
SAV
SAV
SAV
SAV
EAV
EAV
EAV
EAV
ACTIVE PICTURE
ACTIVE PICTURE
Switch point
switch video source 2 to 1
ACTIVE PICTURE
ACTIVE PICTURE
Switch point
switch video source 1 to 2
ACTIVE PICTURE
ACTIVE PICTURE
ACTIVE PICTURE
ACTIVE PICTURE
ANC
ANC
ANC
ANC
ANC
ANC
EAV
EAV
EAV
EAV
EAV
Flywheel re-synch
EAV
EAV
EAV
Flywheel re-synch
ANC
ANC
ANC
ANC
ANC
ANC
ANC
ANC
SAV
SAV
SAV
SAV
SAV
SAV
SAV
SAV
ACTIVE PICTURE
ACTIVE PICTURE
ACTIVE PICTURE
ACTIVE PICTURE
GS1559 Data Sheet
ACTIVE PICTURE
ACTIVE PICTURE
ACTIVE PICTURE
ACTIVE PICTURE
EAV
EAV
EAV
EAV
EAV
EAV
EAV
EAV
ANC
ANC
ANC
ANC
ANC
ANC
ANC
ANC
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SAV
SAV
SAV
SAV
SAV
SAV
SAV
SAV