RFID Interface and Interrupt

摘要

A RFID system includes an RFID controller incorporating a serial bus master coupled via a serial bus to a serial bus slave device, whereby the RFID controller controls power supply and/or power mode of the salve device in order that the slave device is powered and able to communicate with the RFID controller in response to RFID commands received from an RFID reader, and unpowered or in a low power mode otherwise.

主权项

1. A circuit, comprising:
a memory; a radio frequency identification (RFID) interface; a first processing element coupled to the RFID interface, wherein the first processing element receives RFID commands through the RFID interface and maps the RFID commands to the memory; and a second processing element coupled to the first processing element, wherein the second processing element retrieves the RFID commands from the memory; and a serial interface configured to be coupled to at least one peripheral device, wherein a first peripheral device selected from the at least one peripheral device receives the RFID commands from the second processing element through the serial interface, wherein the RFID commands include a control signal configured to allow the first peripheral device to gain access to operating power.