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GS4911B Datasheet

Part Number GS4911B
Manufacturers Gennum
Logo Gennum
Description HD/SD/Graphics Clock and Timing Generator
Datasheet GS4911B DatasheetGS4911B Datasheet (PDF)

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-c.

  GS4911B   GS4911B






HD/SD/Graphics Clock and Timing Generator

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 .


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