USB 3.X USB 2.0 USB 2.0 APPARATUSES METHODS AND SYSTEMS FOR ENABLING HIGHER CURRENT CHARGING OF UNIVERSAL SERIAL BUS USB SPECIFICATION REVISION 2.0 USB 2.0 PORTABLE ELECTRONIC DEVICES FROM USB 3.X HOSTS

摘要

Devices, methods, and systems are disclosed for enabling higher current charging of Universal Serial Bus (USB) Specification Revision 2.0 (USB 2.0) portable electronic devices from USB 3.X hosts. In an aspect, a USB 2.0 controller is provided in a USB 2.0 portable device. A USB 3.x controller is provided within the USB 3.x host. The USB 2.0 controller is configured to draw a higher charge current than specified in USB 2.0 for a USB 2.0 portable device on a USB 2.0 cable. In order to draw a higher charge current without violating USB 2.0, the USB 2.0 controller must be able to use the conventional USB 2.0 descriptor (s) to indicate the higher charge current from the USB 2.0 controller, or one Lt; RTI ID = 0.0 elements. / RTI