Product Manual - Hawk 2LP Family (Wide) SCSI-2 (Volume 1), Rev. A 63
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11.7
Disc drive SCSI timing
Table 11.7-1. Disc drive SCSI timing
Waveform
Waveform
Description
Symbol [1]
Table [1]
Typical
Target Select Time (no Arbitration)
T00
N/A
<1 µs
Target Select Time (with Arbitration)
T01
4.5-1,2
1.74 µs
Target Select to Command
T02
4.5-1
3.87 µs
Target Select to MSG Out
T03
4.5-2
1.86 µs
Identify MSG to Command
T04
4.5-3
3.56 µs
Command to Status
T05
4.5-5
Command Dependent
Command to Data (para. In)
T06
4.5-9
Command Dependent
Command to Data (para. Out)
T07
4.5-10
Command Dependent
Command to Data (Write to Data Buffer)
T08
4.5-10
Command Dependent
Command to Disconnect MSG
T09
4.5-6
Command Dependent
Disconnect MSG to Bus Free
T10
4.5-6,14
0.52 µs
Disconnect to Arbitration (for Reselect)
T11
4.5-6
Command Dependent
This measures disconnected CMD overhead.
Target win Arbitration (for Reselect)
T12
4.5-7
Arbitration to Reselect
T13
4.5-7
Reselect to Identify MSG In
T14
4.5-7
Reselect Identify MSG to Status
T15
4.5-8
Command Dependent
Reselect Identify MSG to Data (media)
T16
4.5-11
Command Dependent
Data to Status
T17
4.5-15
Command Dependent
Status to Command Complete MSG
T18
4.5-5,8,15
Command Complete MSG to Bus Free
T19
4.5-5,8,15
Data to Save Data Pointer MSG
T20
4.5-14
Save Data Pointer MSG to Disconnect
MSG
T21
4.5-14
Command Byte Transfer
T22
4.5-4
Next Command Byte Access
4.5-4
Next CDB Byte Access (Byte 2 of 6)
T23.6.2
4.5-4
0.64 µs
Next CDB Byte Access (Byte 3 of 6)
T23.6.3
4.5-4
0.12 µs
Next CDB Byte Access (Byte 4 of 6)
T23.6.4
4.5-4
0.12 µs
Next CDB Byte Access (Byte 5 of 6)
T23.6.5
4.5-4
0.12 µs
Next CDB Byte Access (Byte 6 of 6)
T23.6.6
4.5-4
0.12 µs
