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Slave-to-slave direct communication

  • US 10,725,949 B2
  • Filed: 08/28/2018
  • Issued: 07/28/2020
  • Est. Priority Date: 08/28/2018
  • Status: Active Grant
First Claim
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1. An apparatus, comprising:

  • a master comprising a host controller, the host controller being configured to communicate with a first slave and with a second slave via a serial communication bus, in accordance with a serial communication protocol, the master assigning a unique dynamic slave address to each slave,wherein the host controller comprisesa master-slave module configured to communicate with the first slave and with the second slave via the serial communication bus in accordance with the serial communication protocol and be in a low-power mode while the first slave and the second slave are in a direct communication, andan always-on module configured to, while the master-slave module is in the low-power mode, clock the serial communication bus for the direct communication and not wake the master-slave module in a case of the direct communication,wherein the always-on module is further configured to detect, while the master-slave module is in the low-power mode, an interrupt request and a request for the direct communication between the first slave and the second slave on the serial communication bus and to recognize the request for the direct communication based on a direct communication address that is separate and distinct from the assigned dynamic address.

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