DE-EMPHASIS CIRCUIT FOR A VOLTAGE MODE DRIVER USED TO COMMUNICATE VIA A DIFFERENTIAL COMMUNICATION LINK

摘要

A circuit for de-emphasizing information transmitted via a differential communication link (226) includes a voltage mode differential circuit (225) and a bi-directional current source circuit (308). The voltage mode differential circuit (225) includes a first and second output terminal (316, 318). The voltage mode differential circuit (225) provides a first voltage via the first output terminal (316) and second voltage via the second output terminal (318) in response to a differential input voltage. The bi-directional current source circuit (308) is operatively coupled between the first and second terminals. The bi-directional current source circuit (308) selectively provides current in a first and second direction between the first and second terminals based on the first and second voltage.