초록 ▼

Bus communications are optimized by adjusting signal characteristics in accordance with one or more topography dependent parameters. In a bus transmitter, a transmit signal characteristic is adjusted in accordance with a topography dependent parameter. A port in the bus transmitter receives the topo

Bus communications are optimized by adjusting signal characteristics in accordance with one or more topography dependent parameters. In a bus transmitter, a transmit signal characteristic is adjusted in accordance with a topography dependent parameter. A port in the bus transmitter receives the topography dependent parameter for later use by the parameter adjustment circuitry. The parameter adjustment circuitry adjusts a parameter control signal in accordance with the topography dependent parameter, which is coupled to the output driver. Prior to driving an output signal onto a bus, the output driver adjusts the transmit signal characteristic in accordance with the parameter control signal. In a bus receiver, a receive signal characteristic is adjusted in response to a topography dependent parameter. A port associated with the bus receiver receives the topography dependent parameter and stores it in a register. Parameter adjustment circuitry adjusts a control signal in accordance with the stored topography dependent parameter. An input buffer receives an input signal from a bus coupling the receiver to a transmitter of the input signal. The input buffer generates a first signal from the input signal by adjusting a the parameter of the input signal in accordance with the control signal.

대표청구항 ▼

[ What is claimed is:] [26.]26. A system with adjustable signal characteristics, comprising:a bus;a controller coupled to the bus for determining a topography dependent parameter associated with a particular transmitter and for transmitting the topography dependent parameter to the particular transm

[ What is claimed is:] [26.]26. A system with adjustable signal characteristics, comprising:a bus;a controller coupled to the bus for determining a topography dependent parameter associated with a particular transmitter and for transmitting the topography dependent parameter to the particular transmitter;a plurality of modules coupled to the bus, each module including:a topography indicating circuit coupled to the controller via the bus, the topography indicating circuit indicating a topography of each transmitter on the bus; anda plurality of devices, each device including a bus transmitter for transmitting data to the controller via the bus;each bus transmitter including:a port for receiving a first topography dependent parameter;a first register coupled to the port, the first register storing the first topography dependent parameter;a first parameter adjustment circuit coupled to the first register adjusting a first parameter control signal in accordance with the first topography dependent parameter; andan output driver for driving a first data signal onto the bus, the output driver setting a transmission parameter of the first data signal in accordance with the first parameter control signal.