Seagate ST118202LC, Product Manual

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62 Cheetah 18 Product Manual, Rev. B
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.
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 max
Data Out Byte Transfer (parameter) T25 4.5-13 0.04
µ
s max
Next Data In Byte Access (parameter) T26 4.5-12 0.10
µ
s
Next Data Out Byte Access (parameter) T27 4.5-13 0.10
µ
s
Data In Byte Transfer (media) [2] T28 4.5-12 0.03
µ
s
Data Out Byte Transfer (media) [2] T29 4.5-13 0.03
µ
s
Next Data In Byte access (media) [2] T30 4.5-12 0.10
µ
s
Next Data Out Byte access (media) [2] T31 4.5-13 0.10
µ
s
MSG IN Byte Transfer T32 4.5-5,7,8,14,15 0.09
µ
s
MSG OUT Byte Transfer T33 4.5-2 0.04
µ
s max
STATUS Byte Transfer T34 4.5-5,8,15 0.04
µ
s max
Synchronous Data Transfer Characteristics:
Request Signal Transfer Period [3] – – various (800 ns max)
Table 17: Disc drive SCSI timing (Continued)
These values are not current values, but are listed for information only.
Description
Waveform
symbol [1] Waveform
table [1]
Typical timing