Bus Phases - Fujitsu MAN3184 SERIES Specifications

1.6

Bus Phases

The SCSI bus must be in one of the following eight phases:
BUS FREE phase
ARBITRATION phase
SELECTION phase
RESELECTION phase
COMMAND phase
DATA phase
STATUS phase
MESSAGE phase
The SCSI bus can never be in more than one phase at any given time.
Note:
In the following bus phase conditions, signals are false unless otherwise defined. Signals on
the timing charts are assumed to be positive logic (or active high).
INFORMATION TRANSFER phase
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