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Technical Speciﬁcations 3-9

3.3.1 Electrical Characteristics

Table 3.3 lists the maximum power requirements for standard Ultra320

SCSI to PCI-X host adapter boards, including SCSI TERMPWR, under

normal operation.

3.3.2 Thermal and Atmospheric Characteristics

The thermal and atmospheric characteristics for all Ultra320 SCSI Host

Adapter boards are:

• Temperature range: 0 °Cto55°C (dry bulb)

• Relative humidity range: 5% to 90% noncondensing

• Maximum dew point temperature: 32 °C

• Airﬂow must be sufﬁcient to keep the LSI53C1020 and LSI53C1030

heat sink temperature below 80 °C

The following parameters deﬁne the storage and transit environment for

the Ultra320 SCSI Host Adapter boards:

• Temperature range: 40 °C to 105 °C (dry bulb)

• Relative humidity range: 5% to 90% noncondensing

Table 3.3 Maximum Power Requirements

Host

Adapter

PCI/PCI-X

+5.0 V

PCI/PCI-X

+3.3 V

PCI PRSNT1#/

PRSNT2# Power

Over the

Operating Range

LSI20320

LSI20320-R

LSI20320-L

LSI20320-H

1.5 A 2.0 A 15 W 0 ˚C to 55 ˚C

LSI21320

LSI21320-R

1.5 A 2.5 A 15 W 0 ˚C to 55 ˚C

LSI22320

LSI22320-R

5A 0.0A 25W 0˚Cto55˚C

1 2 ... 34 35 36 37 38 39 40 41 42 43 44 ... 47 48

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Lsi 320 Manual do Utilizador Página 39