Fujitsu MCJ3230SS manual 75 Timing specifications 2 of, Timing Rule

4.5 Timing Rule

Table 4.75 Timing specifications (2 of 3)

No.	Name	Standard	Timing specification
6	Bus Settle Delay	400 ns min.	Minimum wait period between the time a
			particular control signal condition changes and
			the time the bus condition is stabilized.
7	Cable Skew	10 ns max.	Maximum allowable difference in transmission
	Delay		time over the interface cable between any two
			bus signals from any two SCSI devices.
8	Data release	400 ns max.	Maximum allowable period between the time an
	Delay		I/O signal changes its status from false to true
			and the time the INIT stops driving data bus
			signals.
9	Deskew Delay	45 ns min.	Time for compensation for skew involved in bus
			signal transmission.
10	Hold Time	45 ns min.	In synchronous data transfer mode, the
			minimum time during which the transfer data on
			the DATA BUS from the leading edge of the
			REQ or ACK signal pulse must be maintained to
			compensate for the hold time in the SCSI device
			receiving data.
11	Negation Period	90 ns min.	In synchronous data transfer mode, the
			minimum time from the trailing edge of an REQ
			signal to the leading edge of the next REQ
			signal, or from the trailing edge of an ACK
			signal to the leading edge of the next ACK
			signal.
12	Power-On to	10 sec max.	Maximum time from when the TARG is turned
	Selection Time		on to the time the TARG can post the correct
			status and sense data for the TEST UNIT
			READY, INQUIRY or REQUEST SENSE
			command.
13	Reset to	250 ms max.	Maximum time from when the RESET condition
	Selection Time		(hard RESET) is released to the time the TARG
			can post the correct status and sense data for the
			TEST UNIT READY, INQUIRY or REQUEST
			SENSE command.
14	Reset Hold	25µs min.	The minimum time during which the RST signal
	Time		must be held true to create a RESET condition.
			A maximum time is not defined.
15	Selection Abort	200µs max.	In a SELECTION or RESELECTION phase, the
	Time		maximum allowable period between the time the
			SCSI device recognizes itself as selected and the
			time it replies with a BSY signal.

C156-E224-01EN 4-47