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US 2006/0076977 A1Published application
USB 1.1 for USB OTG implementation
AssigneeTexas Instruments Incorporated
InventorXiaoming Zhu
Life of this patent
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Abstract
This invention enables a USB 1.1 device and a USB 1.1 host to communicate seamlessly with a USB OTG device. The invention complies with both USB 1.1 and OTG specifications. The invention includes the USB 1.1 host, USB 1.1 device and mixed signal circuits to implement USB OTG functions. The mixed signal components are controlled by the USB 1.1 device microcontroller. The invention is a cost effective implementation compared to a custom ASIC design for USB OTG implementation.
Claims5
An apparatus for a USB 1.1 device including a microcontroller for implementing USB OTG functions comprising:
- a Vbus pulsing detect circuit controlled by the microcontroller;
- a Vbus pulsing circuit controlled by the microcontroller;
- and
- a data line pull down detect circuit controlled by the microcontroller.
1 more element
Dependencies are inferred from the claim text.