LSI U160 Manual do Utilizador descarregar pdf (Página 27)

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52.5 pc

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Detailed Installation Procedure 2-7

2.2.3 Connecting the SCSI Peripherals

SCSI bus connections to the LSIU160 inside your computer can be made

with an unshielded 68 conductor Ultra SCSI TPE ribbon cable (see

Figure 2.3). The lead connected to pin 1 on the cable is marked with a

colored stripe. The connectors on this cable may also be keyed to ensure

proper pin-1 connection.

All external SCSI bus connections to the LSIU160 are made with high

quality shielded 68 conductor cables (see Figure 2.3). The connectors on

this cable are always keyed to ensure proper pin-1 connection.

Note: All the cables shown in Figure 2.3 are included in the

LSI Logic Adapter Board Kit for the LSIU160.

A list of the SCSI bus width and maximum data transfer rate, for various

SCSI deﬁnitions, is provided in Table 2.1.

You can connect up to eight SCSI, Fast SCSI, and Ultra SCSI devices

on an SE Ultra SCSI bus only if they are evenly spaced on a 1.5-meter

Ultra SCSI cable (0.19 m between devices).

Table 2.1 SCSI Bus Widths and Speeds

STA Terms

SCSI Bus

Width, Bits

SCSI Bus Speed

Maximum Data Rate,

Mbytes/s

SCSI-1 8 5

Fast SCSI 8 10

Fast Wide SCSI 16 20

Ultra SCSI 8 20

Wide Ultra SCSI 16 40

Ultra2 SCSI 8 40

Wide Ultra2 SCSI 16 80

Ultra160 SCSI 16 160

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LSI U160 Manual do Utilizador Página 27