7.6 Bus Phases
Deskew Delay ⋅ | 2 (Min) |
|
Bus Clear Delay + Bus Settle Delay (Min) | Deskew Delay ⋅ | 2 (Min) |
Figure 7.12 RESELECTION phase
(2) Response sequence
When the SCSI device (INIT) detects that the SEL signal, I/O signal and data bus bit (DBn) corresponding to the own SCSI ID are true and the BSY signal is false for Bus Settle Delay or more, the INIT shall recognize that the INIT itself is selected in the RESELECTION phase. At this time, the selected INIT performs sampling to identify the SCSI ID of the TARG that requests the reconnection.
The INIT shall respond to the TARG by asserting the BSY signal within Selection Abort Time.
When other than
After the TARG detects the response (BSY signal) from the INIT, the TARG asserts the BSY signal, then release the SEL signal after Deskew Delay ⋅ 2 or more. After this time, the TARG may change the I/O signal state and data bus value.
When the INIT detects that the SEL signal is false, the INIT stops sending the BSY signal.
