Seagate Barracuda 18XL ST318416N, Product Manual

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84 Barracuda 18XL Product Manual, Rev. A
Notes.
[1] See the SCSI Interface Product Manual, part number 75789509.
[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 the Synchronous Data Transfer section and
the Extended Messages section in the SCSI Interface Product Manual, for a description of synchronous
data transfer operation.
Next CDB Byte Access (Byte 4 of 10) T23.10.4 4.5-4 0.12
µ
s ±1
µ
s
Next CDB Byte Access (Byte 5 of 10) T23.10.5 4.5-4 0.11
µ
s ±1
µ
s
Next CDB Byte Access (Byte 6 of 10) T23.10.6 4.5-4 0.11
µ
s ±1
µ
s
Next CDB Byte Access (Byte 7 of 10) T23.10.7 4.5-4 0.13
µ
s ±1
µ
s
Next CDB Byte Access (Byte 8 of 10) T23.10.8 4.5-4 0.12
µ
s ±1
µ
s
Next CDB Byte Access (Byte 9 of 10) T23.10.9 4.5-4 0.12
µ
s ±1
µ
s
Next CDB Byte Access (Byte 10 of 10) T23.10.10 4.5-4 0.12
µ
s ±1
µ
s
Data In Byte Transfer (parameter) T24 4.5-12 0.04
µ
s
Data Out Byte Transfer (parameter) T25 4.5-13 0.04
µ
s
Next Data In Byte Access (parameter) T26 4.5-12 0.12
µ
s
Next Data Out Byte Access (parameter) T27 4.5-13 0.12
µ
s
Data In Byte Transfer (media) [2] T28 4.5-12 0.04
µ
s
Data Out Byte Transfer (media) [2] T29 4.5-13 0.04
µ
s
Next Data In Byte access (media [2] T30 4.5-12 0.12
µ
s
Next Data Out Byte access (media [2] T31 4.5-13 0.12
µ
s
MSG IN Byte Transfer T32 4.5-5,7,8,14,15 0.04
µ
s
MSG OUT Byte Transfer T33 4.5-2 0.04
µ
s
STATUS Byte Transfer T34 4.5-5,8,15 0.04
µ
s
Synchronous Data Transfer Characteristics:
Request Signal Transfer Period [3] – – various (800 ns max)
Table 15: Disc drive SCSI timing
These values are not current Barracuda 18XL values, but are listed for information only.
Description
Waveform
symbol [1] Waveform
table [1]
Typical timing