Dual mode serial transmission apparatus and method for switching mode thereof

摘要

A dual mode serial transmission apparatus and method for switching a mode thereof are provided. The dual mode serial transmission apparatus includes a first and second current sources, a first and second inverting circuits, a differential pair and a resistor string. The first inverting circuit receives a mode selecting signal or a first data transmission signal, the second inverting circuit receives the mode selecting signal or a second data transmission signal. First and second load terminals of the differential pair are respectively coupled to the first and second inverting circuits. A common terminal of the differential pair is coupled to the second current source. First and second differential input terminals receive the mode selecting signal or respectively receive the first and second data transmission signals. The resistor string is coupled in series between output terminals of the first and second inverting circuits.

主权项

1. A dual mode serial transmission apparatus, comprising:
a first current source; a first inverting circuit, coupled to the first current source, and receiving a mode selecting signal or a first data transmission signal; a second inverting circuit, coupled to the first current source, and receiving the mode selecting signal or a second data transmission signal; a second current source; and a differential pair, having a first and a second load terminals respectively coupled to the first inverting circuit and the second inverting circuit, a common terminal being coupled to the second current source, and a first and second differential input terminals receiving the mode selecting signal or respectively receiving the first and second data transmission signals, wherein when the first and second inverting circuits respectively receive the first and second data transmission signals, the differential pair receives the mode selecting signal, and when the first and second inverting circuits receive the mode selecting signal, the differential pair receives the first and second data transmission signals.