发明名称 |
METHOD AND CIRCUIT FOR PRE-EMPHASIS EQUALIZATION IN HIGH SPEED DATA COMMUNICATIONS |
摘要 |
A method and circuit for pre-emphasis equalization of a high speed data communication system can be provided through the use of programmable pulse shaping. A data communication system configured with the pre-emphasis equalization circuit operates by receiving an input data stream and outputting a data stream for transmission through an interconnect or other transmission channel. The data can be passed through an output buffer configured with programmable pre-emphasis equalization, having input inverters at an input stage and output inverters at an output stage. During operation, once an input signal to the input stage transitions, for example from a low to a high state, an input signal to the output stage is configured to a full amplitude to drive the transmission channel. Once the output stage transitions to a full amplitude, the input of the output stage is configured closer to a mid-scale amplitude. The amount of amplitude change from full scale back to mid-scale determines the amount of equalization to be provided by theoutput buffer to the transmission channel. |
申请公布号 |
WO0239684(A2) |
申请公布日期 |
2002.05.16 |
申请号 |
WO2001US47134 |
申请日期 |
2001.11.13 |
申请人 |
PRIMARION, INC. |
发明人 |
TANG, BENJAMIN;PIERSON, RICHARD, C. |
分类号 |
H04L25/03;H04B3/04;H04L25/02 |
主分类号 |
H04L25/03 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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