Dual Video and Memory Clock Generator VGA-XGA 135MHz DIP-20 The dot clock generator is an integrated dual phase-locked loop frequency synthesizer capable of generating 16 video dot clock frequencies and 8 memory clock frequencies for use with high performance video display systems. Features World standard ISC2494A reconfigured to allow 8 memory frequencies Mask-programmable frequencies Pre-programmed versions for Industrial Standard VGA chips Glitch-free frequency transitions Provisions for external frequency input Internal clock remains locked when the external frequency input is selected
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