A control system for communicating a master with a plurality of slaves over a bus in a digital communications system

摘要

A control system (1) controls communication between a host bus (3) and eight daughter cards (4) through a communications bus (5) under the control of a master (6) which is located in a host computer. The communications bus (5) is located on a mother board and the eight daughter cards (4) are connected in pairs to the mother board. Communication between the respective daughter cards (4) and the communications bus (5) is through corresponding slaves (8). The master (6) communicates independently with at least two slaves (8) simultaneously, the data being communicated in words each having a pre-determined number of bits, in this case 32 bits, and each word is separated into two sub-groups, each of 16 bits for reception by the respective slaves (8) with which the master (6) is simultaneously communicating so that each slave (8) receives a different sub-group. Fig. 1 to accompany abstract.