Memory arbitrator for electronics communications devices

摘要

Embodiments of the invention include electronic communications devices having a memory in near field communication device, a memory arbitrator and a host processor. The near field communication (NFC) devices are configured to receive data and drive power from the communication signal. The memory arbitrator is connected to the NFC device and the memory. The memory arbitrator is also configured to access the memory in response to an access request from the NFC device. Additionally, the memory is configurable to be accessed by both the host processor and the NFC device according to embodiments of the present invention.

主权项

1. An electronic device, comprising:
a memory; a near field communication (NFC) device configured to receive data, power, and an NFC memory access request from a communication signal; a host processor; a functional component configured to provide a functional component memory access request; and a memory arbitrator configured to: access the memory in response to the NFC memory access request from the NFC device when the host processor is inactive, resolve a conflict between the NFC memory access request and the functional component access request based on priority, and grant, without requesting access from the host processor, access to the memory to the functional component when the functional component has a higher priority than the NFC device.