| 摘要 |
<p>A method and apparatus is provided allowing a dual-speed network adapter to connect to the same physical connector without the use of mechanical or electromechanical switches. On the transmit side, the invention uses a differential amplifier buffer (130) to selectively couple high speed transmit paths to the network, with the differential amplifier (130) connected to the same output impedance as one of the two drivers (110, 140) circuits. On the receive path, the invention allows data to be received in parallel by two receiver circuits (30, 70), with one circuit isolated from the other with a pair of very high impedance emitter/followers (40, 50).</p> |
