United States Patent 7,167,039
Garrett, Jr. , et al. January 23, 2007
Garrett, Jr. , et al. January 23, 2007
Memory device having an adjustable voltage swing setting
Abstract
A method of operating an integrated circuit including an output driver. The method includes storing a value in a register, wherein the value is representative of a voltage swing setting of an output driver. The voltage swing setting of the output driver is adjusted using a counter that holds a count value representing an update to the voltage swing setting. The count value is updated in accordance with a signal that indicates an adjustment to the voltage swing setting. In addition, an integrated circuit memory device comprising an output driver, a register and a counter is provided. The counter updates a count value in response to a signal that indicates a direction to adjust the count value.
A method of operating an integrated circuit including an output driver. The method includes storing a value in a register, wherein the value is representative of a voltage swing setting of an output driver. The voltage swing setting of the output driver is adjusted using a counter that holds a count value representing an update to the voltage swing setting. The count value is updated in accordance with a signal that indicates an adjustment to the voltage swing setting. In addition, an integrated circuit memory device comprising an output driver, a register and a counter is provided. The counter updates a count value in response to a signal that indicates a direction to adjust the count value.
Inventors: Garrett, Jr.; Billy Wayne (Mountain View, CA), Dillon, legal representative; Nancy David (Marshall, VA), Ching; Michael Tak-Kei (Sunnyvale, CA), Stonecypher; William F. (San Jose, CA), Chan; Andy Peng-Pui (San Jose, CA), Griffin; Matthew M. (Mountain View, CA), Dillon, deceased; John B. (Palo Alto, CA)
Assignee: Rambus Inc. (Los Altos, CA)
Appl. No.: 10/890,972
Filed: July 14, 2004
Assignee: Rambus Inc. (Los Altos, CA)
Appl. No.: 10/890,972
Filed: July 14, 2004
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United States Patent 7,167,019
Broyde, et al. January 23, 2007
Broyde, et al. January 23, 2007
Method and device for transmission with reduced crosstalk
Abstract
The invention relates to a method and a device for transmission with reduced crosstalk in interconnections used for sending a plurality of signals, such as the interconnections made with flat multiconductor cables, or with the tracks of a printed circuit board, or inside an integrated circuit. An interconnection with four parallel transmission conductors plus a reference conductor has each of its ends connected to a termination circuit. The transmitting circuit receives at its input the signals of the four channels of the source and its output terminals are connected to the conductors of the interconnection. The receiving circuit's input terminals are connected to the conductors of the interconnection, and its four output channels are connected to the destination. The signals of the four channels of the source are sent to the four channels of the destination, without noticeable crosstalk.
The invention relates to a method and a device for transmission with reduced crosstalk in interconnections used for sending a plurality of signals, such as the interconnections made with flat multiconductor cables, or with the tracks of a printed circuit board, or inside an integrated circuit. An interconnection with four parallel transmission conductors plus a reference conductor has each of its ends connected to a termination circuit. The transmitting circuit receives at its input the signals of the four channels of the source and its output terminals are connected to the conductors of the interconnection. The receiving circuit's input terminals are connected to the conductors of the interconnection, and its four output channels are connected to the destination. The signals of the four channels of the source are sent to the four channels of the destination, without noticeable crosstalk.
Inventors: Broyde; Frederic (Maule, FR), Clavelier; Evelyne (Maule, FR)
Assignee: Rambus Inc. (Los Altos, CA)
Appl. No.: 10/541,059
Filed: December 24, 2003
Assignee: Rambus Inc. (Los Altos, CA)
Appl. No.: 10/541,059
Filed: December 24, 2003
HT FinzToRite.
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