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C156-E097-01EN
The maximum length of the SCSI cable is as follows. If more than one SCSI device is
connected, the total length must not exceed 6 m.
A 25-pair twisted-pair cable satisfying the following requirements is recommended for the SCSI
cable:
Table 3.5
SCSI cable requirements
Item
Single-Ended type
Conductor size
28 AWG or larger
Characteristic impedance
100 to 132
Ω
Each pair of wires must be connected to pins n and n + 1 (where n is an odd number) on the
interface connector. All cables used on the same SCSI must have the same characteristic
impedance to reduce signal reflection and to maintain transmission characteristics.
When an SCSI device is not connected to an end of the SCSI cable, connection to the SCSI
connector must be at a branching point of the cable. If an SCSI device is connected to an end of
the SCSI bus, any excess cable length after the last SCSI device must be terminated with a
resistor. (See Figure 3.18.)
Содержание MCE3064SS
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Страница 52: ...C156 E097 01EN 2 21 Figure 2 3 Example of alternate processing ...
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Страница 72: ...C156 E097 01EN 3 19 Figure 3 17 SCSI cable connector ...
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Страница 119: ...7 2 C156 E097 01EN Host system A Host system B Figure 7 1 Example of SCSI configuration ...
Страница 133: ...7 16 C156 E097 01EN Figure 7 6 ARBITRATION phase ...
Страница 135: ...7 18 C156 E097 01EN µ Figure 7 7 SELECTION phase 30 30 30 30 ...
Страница 141: ...7 24 C156 E097 01EN Figure 7 10 Transfer in asynchronous mode 18 18 ...
Страница 145: ...7 28 C156 E097 01EN Figure 7 11 Transfer in synchronous mode 11 11 11 11 43 18 43 18 ...
Страница 146: ...C156 E097 01EN 7 29 Figure 7 12 Transfer in FAST SCSI mode ...
Страница 148: ...C156 E097 01EN 7 31 Figure 7 13 Data transfer rate in asynchronous mode ...
Страница 158: ...C156 E097 01EN 7 41 Figure 7 17 RESET condition ...
Страница 160: ...C156 E097 01EN 7 43 Figure 7 18 Bus phase sequence 1 of 2 ...
Страница 161: ...7 44 C156 E097 01EN Figure 7 18 Bus phase sequence 2 of 2 ...
Страница 162: ...C156 E097 01EN 7 45 Figure 7 19 Example of bus phase transition on execution of a single command 1 of 5 ...
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Страница 166: ...C156 E097 01EN 7 49 Figure 7 19 Example of bus phase transition on execution of a single command 5 of 5 ...
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