Abstract: Disclosed are a method and apparatus for optimizing a signal rise time of a bus, and a computer device. The method includes: constructing an equivalent circuit of a bus link on the basis of a topology of the link; calculating an equivalent capacitance of the link and a threshold value of pull-up resistance; calculating a time required for a signal of the link to change from a first threshold value to a second threshold value on the basis of the equivalent circuit, the equivalent capacitance, and the threshold value of the pull-up resistance; and connecting a compensation capacitor in the equivalent circuit and connecting a first transistor in parallel at two ends of the compensation capacitor if the time required for the signal to change from the first threshold value to the second threshold value does not meet regulations of a bus specification, to optimize the signal rise time.

Abstract: Disclosed are a method and apparatus for optimizing a signal rise time of a bus, and a computer device. The method includes: constructing an equivalent circuit of a bus link on the basis of a topology of the link; calculating an equivalent capacitance of the link and a threshold value of pull-up resistance; calculating a time required for a signal of the link to change from a first threshold value to a second threshold value on the basis of the equivalent circuit, the equivalent capacitance, and the threshold value of the pull-up resistance; and connecting a compensation capacitor in the equivalent circuit and connecting a first transistor in parallel at two ends of the compensation capacitor if the time required for the signal to change from the first threshold value to the second threshold value does not meet regulations of a bus specification, to optimize the signal rise time.

Abstract: A method for reducing influence of a remote reference power noise on signal quality is provided. A remote reference power plane connected to a power module is identified according to a schematic diagram of signal design, and a noised power plane is determined. A position of the noised power plane is found in a PCB, and whether the noised power plane is remote referenced by a high-speed signal is judged. Placement positions and number of connection capacitors are determined according to a layout and routing position of the high-speed signal and a width of the noised power plane. Two capacitors with fixed capacitance values are placed at the placement positions of the connection capacitors. Connection capacitors are added to a position of a noised remote reference power plane of a signal line for connecting the power plane and the ground.

Abstract: A method and system for reducing influence of a remote reference power noise on signal quality are provided. A remote reference power plane connected to a power module is identified according to a schematic diagram of signal design, and a noised power plane is determined. A position of the noised power plane is found in a PCB, and whether the noised power plane is remote referenced by a high-speed signal is judged. Placement positions and number of connection capacitors are determined according to a layout and routing position of the high-speed signal and a width of the noised power plane. Two capacitors with fixed capacitance values are placed at the placement positions of the connection capacitors. Connection capacitors are added to a position of a noised remote reference power plane of a signal line for connecting the power plane and the ground.