USB On-The-Go implementation

• US 20060106962A1
• Filed: 11/17/2004
• Published: 05/18/2006
• Est. Priority Date: 11/17/2004
• Status: Abandoned Application

• Current Assignee: Intel Corporation
• Original Assignee: Intel Corporation
• Inventors: Fullerton, Mark N., Woodbridge, Nancy G., Rendon, Enrique
• Application Number:
  US10/992,250
• Publication Number:
  US 20060106962A1
• Time in Patent Office: Days
• US Class Current: 710/106
• CPC Class Codes: G06F 13/4291 using a clocked protocol

Abstract

In some embodiments a Universal Serial Bus On-The-Go (USB OTG) device includes a USB device controller, a USB host controller, a USB OTG transceiver, and a controller to control a coupling between the USB device controller, the USB host controller, and the USB OTG transceiver, and to control whether the USB device controller, the USB host controller, or a combination of the USB device controller and the USB host controller controls the USB OTG transceiver. Other embodiments are described and claimed.

Claims

1. A USB device comprising:

a USB device controller;

a USB host controller;

a transceiver; and

a controller to control a coupling between the USB device controller, the USB host controller, and the transceiver, and to control whether the USB device controller, the USB host controller, or a combination of the USB device controller and the USB host controller controls the transceiver.

2. The USB device according to claim 1, wherein the USB device is a USB On-The-Go device.

3. The USB device according to claim 2, wherein the transceiver is a USB On-The-Go transceiver.

4. The USB device according to claim 1, wherein the transceiver is a USB On-The-Go transceiver.

5. The USB device according to claim 1, wherein the USB device controller, the USB host controller, the transceiver and the controller are all included in the same integrated circuit.

6. The USB device according to claim 1, further comprising a multiplexer to multiplex the coupling in response to the controller.

7. The USB device according to claim 1, further comprising an I/O interface to couple the controller to other devices.

8. The USB device according to claim 7, wherein the other devices include an external charge pump and an external transceiver.

9. The USB device according to claim 1, wherein the USB device is to perform USB On-The-Go operation by using the transceiver and the external charge pump.

10. The USB device according to claim 1, wherein the USB device is to perform USB On-The-Go operation using the external transceiver.

11. The USB device according to claim 10, wherein the transceiver is to perform as a dedicated host controller transceiver.

12. The USB device according to claim 10, wherein the transceiver is to perform as a dedicated device controller transceiver.

13. The USB device according to claim 1, wherein in a first mode the USB device is to perform USB On-The-Go operation by using the transceiver and the external charge pump, and in a second mode the USB device is to perform USB On-The-Go operation using the external transceiver.

14. An apparatus comprising:

a device controller;

a host controller;

a transceiver; and

a controller to control a coupling between the device controller, the host controller, and the transceiver, and to control whether the device controller, the host controller, or a combination of the device controller and the host controller controls the transceiver.

15. The apparatus according to claim 14, wherein the device controller is a USB device controller and the host controller is a USB host controller.

16. The apparatus according to claim 14, wherein the device controller, the host controller, the transceiver and the controller are all included in the same integrated circuit.

17. The apparatus according to claim 14, further comprising a multiplexer to multiplex the coupling in response to the controller.

18. The apparatus according to claim 14, further comprising an I/O interface to interface the controller to other external devices.

19. The apparatus according to claim 18, wherein the other devices include an external charge pump and an external transceiver.

20. A USB On-The-Go device comprising:

an integrated circuit;

an external charge pump; and

an external transceiver;

the integrated circuit including;

a USB device controller;

a USB host controller;

a USB On-The-Go transceiver;

an I/O interface to couple the integrated circuit to the external charge pump and to the external transceiver; and

a controller to control a coupling between the USB device controller, the USB host controller, the I/O interface, and the USB On-The-Go transceiver, and to control whether the USB device controller, the USB host controller, or a combination of the USB device controller and the USB host controller controls the transceiver.

21. The USB On-The-Go device according to claim 20, the integrated circuit further comprising a multiplexer to multiplex the coupling in response to the controller.

22. The USB On-The-Go device according to claim 20, wherein the USB On-The-Go device is to perform USB On-The-Go operation by using the transceiver and the external charge pump.

23. The USB On-The-Go device according to claim 20, wherein the USB On-The-Go device is to perform USB On-The-Go operation using the external transceiver.

24. The USB On-The-Go device according to claim 23, wherein the USB On-The-Go transceiver is to perform as a dedicated USB host controller transceiver.

25. The USB On-The-Go device according to claim 23, wherein the USB On-The-Go transceiver is to perform as a dedicated USB device controller transceiver.

26. The USB On-The-Go device according to claim 20, wherein in a first mode the USB On-The-Go device is to perform USB On-The-Go operation by using the USB On-The-Go transceiver and the external charge pump, and in a second mode the USB On-The-Go device is to perform USB On-The-Go operation using the external transceiver.

27. A system comprising:

a first USB device;

a second USB device; and

a USB cable coupling the first USB device and the second USB device;

wherein the first USB device is a USB On-The-Go device including;

an integrated circuit;

an external charge pump; and

an external transceiver;

the integrated circuit including;

a USB device controller;

a USB host controller;

a USB On-The-Go transceiver;

an I/O interface to couple the integrated circuit to the external charge pump and to the external transceiver; and

a controller to control a coupling between the USB device controller, the USB host controller, the I/O interface, and the USB On-The-Go transceiver, and to control whether the USB device controller, the USB host controller, or a combination of the USB device controller and the USB host controller controls the USB On-The-Go transceiver.

28. The system according to claim 27, the integrated circuit further comprising a multiplexer to multiplex the coupling in response to the controller.

29. The system according to claim 27, wherein the first USB device is to perform USB On-The-Go operation by using the USB On-The-Go transceiver and the external charge pump.

30. The system according to claim 27, wherein the first USB device is to perform USB On-The-Go operation using the external transceiver.

31. The system according to claim 30, wherein the USB On-The-Go transceiver is to perform as a dedicated USB host controller transceiver.

32. The system according to claim 30, wherein the USB On-The-Go transceiver is to perform as a dedicated USB device controller transceiver.

33. The system according to claim 27, wherein in a first mode the first USB device is to perform USB On-The-Go operation by using the USB On-The-Go transceiver and the external charge pump, and in a second mode the first USB device is to perform USB On-The-Go operation using the external transceiver.

34. The system according to claim 27, wherein the second USB device is a USB On-The-Go device.