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US 7,412,221 B2Granted
Crosstalk reduction method, apparatus, and system
AssigneeIntel Corporation
InventorsRavindran Mohanavelu, Aaron K. Martin, William Dawson Kesling
Life of this patent
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Abstract
A data driver drives a data signal on a channel, and a current mode driver drives a varying current on the channel to reduce crosstalk.
Claims12
A circuit comprising:
- a first data driver coupled to drive a first data signal on a first conductor;
- a second data driver coupled to drive a second data signal on a second conductor;
- and
- a current mode driver coupled to drive a crosstalk reduction signal on the first conductor in response to the second data signal, wherein the current mode driver includes a transconductance device and a bias network to cause the transconductance device to conduct a substantially constant current, and wherein the current mode driver further includes a voltage driver responsive to the second data signal, the voltage driver being capacitively coupled to the transconductance device.
1 more element
An integrated circuit comprising:
- a port circuit to communicate with a memory device, the port circuit including a crosstalk reduction driver to drive a first conductor with current pulses to reduce crosstalk from a signal on a second conductor, wherein the crosstalk reduction driver includes a transconductance device and a bias network to cause the transconductance device to conduct a substantially constant current, and wherein the crosstalk reduction driver further includes a voltage driver responsive to the second data signal, the voltage driver being capacitively coupled to the transconductance device.
An electronic system comprising:
- an antenna;
- a radio frequency circuit coupled to the antenna;
- and
- a chipset coupled to the radio frequency circuit, wherein the chipset includes a processor and a memory controller, the memory controller having a port circuit to communicate with a memory device, the port circuit including a crosstalk reduction driver to drive a first conductor with current pulses to reduce crosstalk from a signal on a second conductor, wherein the crosstalk reduction driver includes a transconductance device and a bias network to cause the transconductance device to conduct a substantially constant current, and wherein the crosstalk reduction driver further includes a voltage driver responsive to the second data signal, the voltage driver being capacitively coupled to the transconductance device.
1 more element
Dependencies are inferred from the claim text.