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Data transfer control device, electronic equipment and data transfer control method

  • US 7,024,504 B2
  • Filed: 03/04/2003
  • Issued: 04/04/2006
  • Est. Priority Date: 04/26/2002
  • Status: Expired due to Fees
First Claim
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1. A data transfer control device including a controller which performs operation control of a host function and a peripheral function by transitioning between a plurality of states, the data transfer control device comprising:

  • a control register in which a state command corresponding to each state for controlling the controller is set;

    a signal state detection circuit which detects a signal state of at least one of data lines and power supply line; and

    a state command decoder which decodes the state command and generates a control signal which controls the signal state of at least one of the data lines and power supply line,wherein a state command corresponding to a state of a transition destination generated by a given processing section based on a result detected by the signal state detection circuit is set in the control register.

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