Mixed-signal single-chip integrated system electronics for data storage devices

  • US 6,594,716 B2
  • Filed: 06/28/2001
  • Issued: 07/15/2003
  • Est. Priority Date: 11/09/1998
  • Status: Expired due to Term
First Claim
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1. An integrated disk drive controller integrated circuit comprising:

  • a plurality of predetermined circuit blocks corresponding to discrete component circuits, the plurality of predetermined circuit blocks including;

    at least one internal communications and control bus, for transferring stored data and control data to and from elements within the integrated disk drive controller and interconnected with a host interface to transfer stored data and control data to and from the integrated hard disk drive controller, at least one of a read channel controller and a read/write channel controller, coupled to a head preamplifier and the at least one internal communications and control bus, for receiving and processing read channel data from the head preamplifier, a motion control servo logic, coupled to the servo control, for generating control signals for driving the servo control, a disk controller, coupled to the at least one internal communications bus, for transferring stored data to the host interface, and a microcontroller, coupled to the at least one internal communications bus, for generating control data to control devices within the integrated disk drive controller integrated circuit, and a MUX for selectively multiplexing outputs of one or more of the plurality of discrete component circuit blocks with one or more I/O pins such that the integrated circuit selectively outputs signals from one or more of the predetermined circuit blocks.

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