| 摘要 |
A digital system is provided with a bus controller to operate and control a peripheral bus, wherein the bus controller selectively operates at least a first portion of the peripheral bus in a store-and-forward manner. The bus controller facilitates communication with a first bus agent in this first portion by sending a number of request packets destined for the first bus agent to a first hub in the first portion, in an integrated multi-packet form, in bulk, and at a first communication speed. The first hub buffers the request packets, and then forwards the request packets to the first bus agent, on a packet-by-packet basis, and at a second communication speed. In one embodiment, the second communication speed is slower than the first communication speed. In one embodiment, the first hub also receives communications destined for a second bus agent of this first portion, from the bus controller at the first communication speed, and repeats the communications for the second bus agent without buffering, at also the first communication speed. In another embodiment, the peripheral bus further includes a second portion, including a second hub that receives communications destined for a third bus agent in this second portion, from the bus controller at the second communication speed, and repeats the communications for the third bus agent without buffering, at also the second communication speed.
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