Seagate ST39173N Product Manual page 85

Barracuda 9LP Product Manual, Rev. C
Table 14: Disc drive SCSI timing
These values are not current Barracuda 9LP values, but are listed for information only.
Description
Next CDB Byte Access (Byte 10 of 10)
Data In Byte Transfer (parameter)
Data Out Byte Transfer (parameter)
Next Data In Byte Access (parameter)
Next Data Out Byte Access (parameter)
Data In Byte Transfer (media) [2]
Data Out Byte Transfer (media) [2]
Next Data In Byte access (media [2]
Next Data Out Byte access (media [2]
MSG IN Byte Transfer
MSG OUT Byte Transfer
STATUS Byte Transfer
Synchronous Data Transfer Characteristics:
Request Signal Transfer Period [3]
Notes.
[1] See the SCSI Interface Product Manual, part number 77738479, Section 4.5
[2] Maximum SCSI asynchronous interface transfer rate is given in Section 4.2.3 of this manual.
[3] Synchronous Transfer Period is determined by negotiations between an Initiator and a Drive. The Drive is
capable of setting periods as given in Section 9.5. See also Sections 3.1.5.2 and 3.5.3.2 of the SCSI Inter-
face Product Manual, for a description of synchronous data transfer operation.
Waveform Waveform
symbol [1] table [1]
T23.10.10 4.5-4
T24 4.5-12
T25 4.5-13
T26 4.5-12
T27 4.5-13
T28 4.5-12
T29 4.5-13
T30 4.5-12
T31 4.5-13
T32 4.5-5,7,8,14,15
T33 4.5-2
T34 4.5-5,8,15
– –
75
Typical timing
0.12 µs ±1 µs
0.04 µs
0.04 µs
0.12 µs
0.12 µs
0.04 µs
0.04 µs
0.12 µs
0.12 µs
0.04 µs
0.04 µs
0.04 µs
various (800 ns max)