| 摘要 |
A circuit and method for driving a line with a first wire (112 and 122) and a second wire (132 and 142). The circuit comprises a first pull-down current switch (I20) connected to an end of the first wire, a second pull-down current switch (I30) connected to an end of the second wire, a first pull-up current switch (I10) connected to the end of the first wire, and a second pull-up current switch (I40) connected to the end of the second wire. In a first state, the current switches are adjusted such that the ends are at substantially the same voltage. In a second state, the current switches are adjusted such that a voltage differential is created across the ends, preferably 5 volts peak-to-peak.
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