GS4900B

GS4901B/GS4900B SD Clock and Timing Generator with GENLOCK Key Features Video Clock Synthesis Pre-programmed for 4 video clock periods (14.32 MHz, 27 MHz, 36 MHz, and 54 MHz) Accuracy of free-running clock frequency limited only by crystal reference One differential and two single-ended video 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 SDI output Audio Clock Synthesis (GS4901B 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 (GS4901B only), Display Enable, 10FID, and up to 4 user-defined timing signals Pre-programmed to generate timing for 9 different video 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 timin...