Seagate ST15150N Product Manual - Page 95

SCSI-2 Interface Product Manual, SCSI-2 Interface Product, Manual

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ST15150N/ND/W/WD/WC/DC Product Manual, Rev. D 85 Description 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] Waveform symbol [1] T24 T25 T26 T27 T28 T29 T30 T31 T32 T33 T34 - Waveform table [1] 4.5-12 4.5-13 4.5-12 4.5-13 4.5-12 4.5-13 4.5-12 4.5-13 4.5-5,7 4.5-8,14,15 4.5-2 4.5-5,8 4.5-15 Typical 0.10 µs 0.10 µs 0.03 µs 0.03 µs 0.10 µs 0.10 µs 0.09 µs - various Max 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 800 ns Notes: [1] See the SCSI-2 Interface Product Manual (part number 77738479), Section 4.5. [2] Maximum SCSI asynchronous interface transfer rate is given in Section 5.3. [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 11.5 in this manual. See Sections 3.1.5.2 and 3.5.3.2 of the SCSI-2 Interface Product Manual for a description of synchronous data transfer operation. General timing diagrams for SCSI interface operation are shown in the SCSI-2 Interface Product Manual, Section 4.5.

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ST15150N/ND/W/WD/WC/DC Product Manual, Rev. D
85
Waveform
Waveform
Description
symbol [1]
table [1]
Typical
Max
Data in byte transfer (parameter)
T24
4.5-12
0.04 μs
Data out byte transfer (parameter)
T25
4.5-13
0.04 μs
Next data in byte access (parameter)
T26
4.5-12
0.10 μs
0.12 μs
Next data out byte access (parameter)
T27
4.5-13
0.10 μs
0.12 μs
Data in byte transfer (media) [2]
T28
4.5-12
0.03 μs
0.04 μs
Data out byte transfer (media)
[2]
T29
4.5-13
0.03 μs
0.04 μs
Next data in byte access (media)
[2]
T30
4.5-12
0.10 μs
0.12 μs
Next data out byte access (media)
[2]
T31
4.5-13
0.10 μs
0.12 μs
MSG IN byte transfer
T32
4.5-5,7
0.09 μs
0.04 μs
4.5-8,14,15
MSG OUT byte transfer
T33
4.5-2
0.04 μs
STATUS byte transfer
T34
4.5-5,8
0.04 μs
4.5-15
Synchronous data transfer characteristics:
Request signal transfer period [3]
–
–
various
800 ns
Notes:
[1]
See the
SCSI-2 Interface Product Manual
(part number 77738479), Section 4.5.
[2]
Maximum SCSI asynchronous interface transfer rate is given in Section 5.3.
[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 11.5 in this manual. See Sections 3.1.5.2
and 3.5.3.2 of the
SCSI-2 Interface Product Manual
for a description of synchronous data
transfer operation.
General timing diagrams for SCSI interface operation are shown in the
SCSI-2 Interface Product
Manual,
Section 4.5.