Invention Grant
- Patent Title: PHY-less ULPI and UTMI bridges
- Patent Title (中): 无PHY无ULPI和UTMI桥
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Application No.: US12198200Application Date: 2008-08-26
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Publication No.: US08261002B2Publication Date: 2012-09-04
- Inventor: Eric So , Stephen U. Yao , Alan Shiu Lung Tsun
- Applicant: Eric So , Stephen U. Yao , Alan Shiu Lung Tsun
- Applicant Address: US CA Sunnyvale
- Assignee: QuickLogic Corporation
- Current Assignee: QuickLogic Corporation
- Current Assignee Address: US CA Sunnyvale
- Agency: Silicon Valley Patent Group LLP
- Main IPC: G06F13/36
- IPC: G06F13/36 ; G06F3/00 ; G06F15/16 ; H04J3/16

Abstract:
Embodiments of the present invention provide a unique capability of implementing a pair of pseudo-PHY interfaces using a bridge. From the host and device perspectives, the host and device communicate through a PHY interface. The bridge, however, avoids actually using a USB PHY interface. This PHY-less bridge allows communication between a host and a device at high speeds without high-power transceivers associated with a USB PHY interface. In accordance with the present invention, a host and a device may be coupled together using a PHY-less bridge using the same interface or translating between different interfaces by using a wrapper. Such PHY-less bridges include a UTMI-to-UTMI bridge, a UTMI-to-ULPI bridge, a ULPI-to-UTMI bridge and a ULPI-to-ULPI bridge, each avoiding the need for a USB PHY interface.
Public/Granted literature
- US20090070515A1 PHY-LESS ULPI AND UTMI BRIDGES Public/Granted day:2009-03-12
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