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GS4910B

Gennum
Part Number GS4910B
Manufacturer Gennum
Description HD/SD/Graphics Clock and Timing Generator
Published Sep 28, 2016
Detailed Description GS4911B/GS4910B HD/SD/Graphics Clock and Timing Generator with GENLOCK Key Features Video Clock Synthesis • Generates a...
Datasheet PDF File GS4910B PDF File

GS4910B
GS4910B

Overview
GS4911B/GS4910B HD/SD/Graphics Clock and Timing Generator with GENLOCK Key Features Video Clock Synthesis • Generates any video or graphics clock up to 165MHz • Pre-programmed for 8 video and 13 graphics clocks • Accuracy of free-running clock frequency limited only by crystal reference • One differential and two single-ended video/graphics clock outputs • Each clock may be individually delayed for skew control • Video output clock may be directly connected to Gennum’s serializers for a SMPTE-compliant HD-SDI output Audio Clock Synthesis (GS4911B only) • Three audio clock outputs • Generates any audio clock up to 512*96kHz • Pre-programmed for 7 audio clocks Timing Generation • Generates up to 8 timing signals at a time • Choose from 9 pre-programmed timing signals: H and V sync and blanking, F Sync, F Digital, AFS (GS4911B only), Display Enable, 10FID, and up to 4 user-defined timing signals • Pre-programmed to generate timing for 35 different video formats and 13 different graphic display formats Genlock Capability • Clocks may be free-running or genlocked to an input reference with a variable offset step size of 100-200ps (depending on exact clock frequency) • Variable timing offset step size of 100-200ps up to one frame • Output may be cross-locked to a different input reference • Freeze operation on loss of reference • Optional crash or drift lock on application of reference • Automatic input format detection General Features • Reduces design complexity and saves board space - 9mm x 9mm package plus crystal reference replaces multiple VCXOs, PLLs and timing generators • Pb-free and RoHS Compliant • Low power operation typically 300mW • 1.
8V core and 1.
8V or 3.
3V I/O power supplies • 64-PIN QFN package Description The GS4911B is a highly flexible, digitally controlled clock synthesis circuit and timing generator with genlock capability.
It can be used to generate video and audio clocks and timing signals, and allows multiple devices to be genlocked to an input...


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