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Method and apparatus for clock and power control in wireless systems

  • US 7,159,134 B2
  • Filed: 08/29/2002
  • Issued: 01/02/2007
  • Est. Priority Date: 08/29/2001
  • Status: Active Grant
First Claim
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1. A baseband processor for wireless applications, comprising:

  • a first module requiring a first clock signal derived from a system oscillator, the first module providing a first indicator signal having a first state which indicates that the first clock signal is required and a second state which indicates that the first clock signal is not required;

    a second module requiring a second clock signal derived from the system oscillator, the second module providing a second indicator signal having a first state which indicates that the second clock signal is required and a second state which indicates that the second clock signal is not required; and

    a power management circuit responsive to the first and second indicator signals for disabling the system oscillator when the first indicator signal is in the second state and the second indicator signal is in the second state and responsive to an enable signal for enabling the system oscillator.

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