LSI 20860 Electrical Characteristics, Maximum Power Requirements, Electromagnetic Compliance

The component height on the top and bottom of the board conforms to the PCI Specification.

1.1.2.2 Electrical Characteristics

The LSI20860 maximum power requirement, including SCSI TERMPWR, under normal operation is:

Table 1.1 Maximum Power Requirements

+ 5 V DC

±5%

1.5 A

Over the operating range 5 °C to 55 °C

Under abnormal conditions such as a short on SCSI TERMPWR, +5 V current may be higher. At temperatures of at least 25 °C a current of 4 A is sustained no longer than 30 seconds before the self-resetting TERMPWR short circuit protection device opens.

The PCI PRSNT1/ and PRSNT2/ pins are set to indicate a 7.5 W maximum configuration.

1.1.2.3 Thermal, Atmospheric Characteristics

The board is designed to operate in an environment defined by the following parameters:

∙Temperature range: 5 °C to 55 °C (dry bulb)

∙Relative humidity range: 5% to 90% noncondensing

∙Maximum dew point temperature: 32 °C

∙Storage Temperature: −40 °C to +85 °C with 0 to 95% RH noncondensing 10 °C

1.1.2.4Electromagnetic Compliance

The board is designed and implemented to minimize electromagnetic emissions, susceptibility, and the effects of electromagnetic discharge. The board meets the requirements of FCC Class B and CISPR 22 limits and is marked with the FCC Class B Declaration of Conformity Symbol. It also carries the CE mark.

1-4 Using the LSI20860