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Part Number = DP84910VHG Manufacturer Name = National Semiconductor Description = Integrated Read Channel Package= 80 Pin PQFP Features: Reference Voltage Input pin provided for the servo difference amplifiers. Two selected hysteresis control pins provided-one for servo field and one for data field. Data field hysteresis level is control register selectable in eight steps. Logic polarity for write gate assertion is control register selectable. Capability provided for different channel filter bandwidths for servo and data fields-change on the fly with no setting issues. Selectable qualification channel delay. Dual gain synchronizer requiring no external or internal center frequency setting components, external adjustments, or precision components. Digitally controlled syncronizer window strobing Zero phase-start syncronizer lock acquisition. Two port synchronizer PLL filtering. Frequency lock option for 2T or 3T syncronization field, (preamble). TTL compatible inputs and outputs. Chip configurable through serial port interface. 100 pieces Total.
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