Seagate ST32430N, Product Manual

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42 Product Manual - Hawk 2LP Family SCSI-2 (Volume 1), Rev. F
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11.5 Synchronous data transfer
11.5.1 Synchronous data transfer periods supported
Table 11.5-1 and 11.5-2 list Synchronous Data transfer periods supported by the drive. The data transfer period
to be used by the drive and the initiator is established by an exchange of messages during the Message Phase
of operation. See the section on message protocol in the SCSI Interface manual*.
Table 11.5-1. Synchronous data transfer periods for drive
M (Decimal) Transfer period (M times 4 nanoseconds)
25 100
31 124
37 150
50 200
62 250
75 300
87 350
100 400
11.5.2 REQ/ACK offset
The maximum value supported by the Hawk 2LP Family drives for REQ/ACK offset is 15 (0Fh).
11.6 Physical interface
Figure 11.6-1 shows the locations of the physical interface components for the N/ND drives. Shown are the
locations of the D.C. power connector, the SCSI interface connector, the I/O line terminators, and the drive
select and option select header.
Details of the physical, electrical and logical characteristics are given in paragraphs following, while the SCSI
operational aspects of Seagate drive interfaces are given in the Seagate SCSI Interface Product Manual,
P/N 77738479.
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*SCSI Interface Product Manual, P/N 77738479