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Control system and method for a communications interface

  • US 20050132111A1
  • Filed: 12/16/2003
  • Published: 06/16/2005
  • Est. Priority Date: 12/16/2003
  • Status: Active Grant
First Claim
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1. A method for controlling data communications between an external interface and at least first and second chips, the first chip having a first universal asynchronous receiver-transmitters (UART), a first microcontroller, and a switching mechanism capable of connecting the first UART and the first microcontroller, and the second chip having a second microcontroller and a second UART connecting the second microcontroller to the first UART, the method comprising:

  • monitoring signals communicated to the first chip from at least one of the external interface and the second UART; and

    communicating data between the external interface and the second microcontroller via the first and second UARTs, in response to the switching mechanism detecting a predetermined signal.

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