Invention Grant
US08067957B2 USB 2.0 HS voltage-mode transmitter with tuned termination resistance
失效
USB 2.0 HS电压模式发射器,具有调节终端电阻
- Patent Title: USB 2.0 HS voltage-mode transmitter with tuned termination resistance
- Patent Title (中): USB 2.0 HS电压模式发射器,具有调节终端电阻
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Application No.: US12898640Application Date: 2010-10-05
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Publication No.: US08067957B2Publication Date: 2011-11-29
- Inventor: Scott Howe , Dino A. Toffolon , Cameron Lacy , Euhan Chong
- Applicant: Scott Howe , Dino A. Toffolon , Cameron Lacy , Euhan Chong
- Applicant Address: US CA Mountain View
- Assignee: Synopsys, Inc.
- Current Assignee: Synopsys, Inc.
- Current Assignee Address: US CA Mountain View
- Agency: Bever, Hoffman & Harms, LLP
- Agent Jeanette S. Harms
- Main IPC: H03K17/16
- IPC: H03K17/16

Abstract:
A high-speed universal serial bus (USB) transceiver includes a voltage-mode architecture for generating a USB signal. The voltage mode architecture reduces power consumption by reducing the current requirements for high-speed USB communications. The USB transceiver can include a reference voltage generator, a resistive element, and a switching element for completing and breaking a circuit including the reference voltage generator, the resistive element, and a data pin of a USB port to generate half of the differential USB signal (e.g., the D+ signal). A similar circuit can be used to generate the other half of the differential USB signal (i.e., the D− signal). The resistive element can be a set of parallel resistors in the transceiver, with the set of parallel resistors being specifically selected from a larger population of resistors to provide the specified resistance (45Ω±10%) in the USB transceiver.
Public/Granted literature
- US20110019763A1 USB 2.0 HS Voltage-Mode Transmitter With Tuned Termination Resistance Public/Granted day:2011-01-27
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