LOW POWER SECONDARY INTERFACE ADJUNCT TO A PCI EXPRESS INTERFACE BETWEEN INTEGRATED CIRCUITS

摘要

A method, apparatus, and system for a secondary/adjunct interface between two Integrated Circuits (ICs) already having a Peripheral Component Interconnection Express (PCIe) interface, where the PCIe interface performs high-throughput data transfers and the adjunct/secondary interface performs low-throughput data transfers, thereby reducing power consumption for the low-throughput data transfers, are described.

主权项

1. A system in a mobile terminal, comprising:
a Host Integrated Circuit (IC) comprising:
a first Peripheral Component Interconnection Express (PCIe) interface configured for data transfer with a second PCIe interface of a Device IC; anda first adjunct interface configured for low-throughput data transfer with a second adjunct interface of the Device IC, wherein the first PCIe interface performs only high-throughput data transfer; and the Device IC comprising:
the second PCIe interface configured for data transfer with the first PCIe interface of the Host IC; andthe second adjunct interface configured for low-throughput data transfer with the first adjunct interface of the Host IC, wherein the second PCIe interface performs only high-throughput data transfer.