Table 7.8 Scsi Bus Timing Specifications - Fujitsu MCM3064SS Product Manual

Fujitsu computer drive user manual
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No.
Name
17
Transfer Period
No.
Name
1
Arbitration Delay
2
Bus Clear Delay
3
Bus Free Delay
4
Bus Settle Delay
5
Cable Skew Delay
6
Data Release Delay
7
Receive Assertion Period
8
Receive Hold Time
9
Receive Negation Period
10
Receive Setup Time
11
Reset Hold Time
12
Selection Abort Time
13
Selection Time-out Delay
14
System Deskew Delay
15
Transfer Period during
Synchronous Data Transfer Phases
16
Transmit Assertion Period
17
Transmit Hold Time
18
Transmit Negation Period
19
Transmit Setup Time
C156-E228-02EN
Table 7.7 Timing specifications (3 of 3)
Standard
50 ns
In synchronous data transfer mode, the minimum time
(minimum repetition time) from the leading edge of an
REQ signal to the leading edge of the next REQ signal
or from the leading edge of an ACK signal to the
leading edge of the next ACK signal. The actual value
is defined using a SYNCHRONOUS DATA
TRANSFER REQUEST message exchanged between
the INIT and TARG.

Table 7.8 SCSI BUS Timing specifications

Synchronous data transfer mode
Fast-20
2.4 s
800ns
800ns
400ns
3ns
400ns
11ns
11.5ns
11ns
6.5ns
25ns
200ns
250ns
15ns
50ns
15ns
16.5ns
15ns
11.5ns
Timing specification
Fast-SCSI
SCSI-1
2.4 s
2.4 s
800ns
800ns
800ns
800ns
400ns
400ns
4ns
4ns
400ns
400ns
22ns
70ns
25ns
25ns
22ns
70ns
15ns
15ns
25ns
25ns
200ns
200ns
250ns
250ns
20ns
45ns
100ns
200ns
30ns
80ns
33ns
53ns
30ns
80ns
23ns
23ns
7.5 Timing Rule
Asynchronous
data transfer
mode
2.4 s
800ns
800ns
400ns
4ns
400ns
––
––
––
––
25ns
200ns
250ns
45ns
––
––
––
––
––
7-17

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