USB device and data processing system having the same

Details USB device and data processing system having the same USB device and data processing system having the same

2006-11-09

2009-08-18

Tan, Vibol (Department: 2819)

Electronic digital logic circuitry

Signal sensitivity or transmission integrity

Bus or line termination

C710S100000, C710S302000, C710S304000, C710S313000

Reexamination Certificate

active

07576559

ABSTRACT:
A universal serial bus (USB) device is comprised of a receiver for receiving signals from a USB host through data lines, and a pull-up resistor circuit connecting pull-up resistors to data lines in response to control signals. The pull-up resistor circuit selectively connects a plurality of pull-up resistors with a data line in response to control signals. The pull-up resistor circuit controls a number of the plurality of pull-up resistors connected with the data line to cause a voltage level of the signal to be lower than a threshold voltage when the USB host resets the USB device.

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