Seagate ST32430N Product Manual - Page 61

Product Manual - Hawk 2LP Family SCSI-2 Volume 1, Rev. A, Disc drive SCSI timing, Waveform,

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Product Manual - Hawk 2LP Family SCSI-2 (Volume 1), Rev. A 53 11.7 Disc drive SCSI timing Table 11.7-1. Disc drive SCSI timing Description Target Select Time (no Arbitration) Target Select Time (with Arbitration) Target Select to Command Target Select to MSG Out Identify MSG to Command Command to Status Command to Data (para. In) Command to Data (para. Out) Command to Data (Write to Data Buffer) Command to Disconnect MSG Disconnect MSG to Bus Free Disconnect to Arbitration (for Reselect) This measures disconnected CMD overhead. Target win Arbitration (for Reselect) Arbitration to Reselect Reselect to Identify MSG In Reselect Identify MSG to Status Reselect Identify MSG to Data (media) Data to Status Status to Command Complete MSG Command Complete MSG to Bus Free Data to Save Data Pointer MSG Save Data Pointer MSG to Disconnect MSG Command Byte Transfer Next Command Byte Access Next CDB Byte Access (Byte 2 of 6) Next CDB Byte Access (Byte 3 of 6) Next CDB Byte Access (Byte 4 of 6) Next CDB Byte Access (Byte 5 of 6) Next CDB Byte Access (Byte 6 of 6) Waveform Symbol [1] T00 T01 T02 T03 T04 T05 T06 T07 T08 T09 T10 T11 T12 T13 T14 T15 T16 T17 T18 T19 T20 T21 T22 T23.6.2 T23.6.3 T23.6.4 T23.6.5 T23.6.6 Waveform Table [1] N/A 4.5-1,2 4.5-1 4.5-2 4.5-3 4.5-5 4.5-9 4.5-10 4.5-10 4.5-6 4.5-6,14 4.5-6 4.5-7 4.5-7 4.5-7 4.5-8 4.5-11 4.5-15 4.5-5,8,15 4.5-5,8,15 4.5-14 4.5-14 4.5-4 4.5-4 4.5-4 4.5-4 4.5-4 4.5-4 4.5-4 Typical

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Product Manual - Hawk 2LP Family SCSI-2 (Volume 1), Rev. A
53
______________________________________________________________________________________
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
0.11 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