×

Enhanced cardbus adapter and associated buffering circuitry for interfacing multiple cardbus/16 bit PC cards

  • US 5,812,827 A
  • Filed: 03/10/1997
  • Issued: 09/22/1998
  • Est. Priority Date: 01/30/1995
  • Status: Expired due to Term
First Claim
Patent Images

1. An enhanced CardBus adapter comprising:

  • a) a single status pin for receiving a consolidated status change control signal that, when set, denotes a status change for one of a plurality of interfacing PCMCIA cards;

    b) a status control pin for outputting a status enabling signal for enabling reading of externally buffered individual card presence and status change control signals of the plurality of interfacing PCMCIA cards;

    c) a plurality of address/data pins for transfer addresses/data to and from the plurality of interfacing PCMCIA cards, wherein some of the address/data pins are selectively used for receiving the externally buffered individual card presence and status change control signals of the plurality of interfacing PCMCIA cards;

    d) multiple sets of transactional pins, one set for each interfacing PCMCIA card, for correspondingly exchanging transactional signals with the interfacing PCMCIA cards through a plurality of external drivers; and

    e) a status register, coupled to the address/data pins that are also used for receiving the externally buffered individual card presence and status change control signals of the interfacing PCMCIA cards being read, for storing the received individual card presence and status change control signals of the intefacing PCMCIA cards.

View all claims
  • 0 Assignments
Timeline View
Assignment View
    ×
    ×