squishy.gateware.scsi.common

The following table lists the timing requirements for each SCSI version.

Name	SCSI1	SCSI2	SCSI3
Arbitration	2.2us	2.4us	2.4us
Assertion	90ns	90ns	Unspecified
Bus Clear	800ns	800ns	800ns
Bus Free	800ns	800ns	800ns
Bus Set	1.8us	1.8us	1.6us
Bus Settle	400ns	400ns	400ns
Cable Skew	10ns	10ns	4ns
Data Release	400ns	400ns	400ns
Deskew	45ns	45ns	45ns
Hold Time	45ns	45ns	Unspecified
Negation	90ns	90ns	Unspecified
Reset Hold	25us	25us	25us
Selection Abort	200us	200us	200us
Selection Timeout	250ms	250ms	250ms
Disconnect	Unspecified	200us	Unspecified
Power to Selection	Unspecified	10s	10s
Reset to Selection	Unspecified	250ms	250ms
Fast Assert	Unspecified	30ns	Unspecified
Fast Cable Skew	Unspecified	5ns	Unspecified
Fast Deskew	Unspecified	20ns	Unspecified
Fast Hold	Unspecified	10ns	Unspecified
Fast Negation	Unspecified	30ns	Unspecified