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APPENDIX B: Block Diagram
Appendix B: Block Diagram
Figure B-1 on the next page is a basic block diagram of the Expander. The
receiver/transmitter pairs move the data from one bus to the other through the
internal logic of the Expander, which takes care of cleaning up the signals as well
as translating any differences between the buses.
The Expander contains logic to control the signal flow between the two SCSI
ports. It also has filtering and delay circuits to remove false edges from the REQ
and ACK signals. This logic enables the bus segments to be in the same SCSI bus
state after a short delay.
Содержание IC540A
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