LSI LSI21003, Руководство пользователя

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Physical Environment 3-3
3.1.2 Electrical Characteristics
The LSI21003 maximum power requirements, which include SCSI
TERMPWR, under normal operation are listed in
Table 3.1 :
The PCI
PRSNT1#
and
PRSNT2#
pins are set to indicate a 15 W maximum
configuration.
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 3 A is sustained no longer than ten seconds before the self-resetting
TERMPWR short circuit protection device opens.
3.1.3 Thermal, Atmospheric Characteristics
The board is designed to operate in an environment, which is defined by
the following parameters:
•
Temperature range: 0 to 55
°
C (dry bulb)
•
Relative humidity range: 5% to 90% (noncondensing)
•
Maximum dew point temperature: 32
°
C
The board is designed for a storage and transit environment, which is
defined by the following parameters:
•
Temperature range:
−
45
°
C to +105
°
C (dry bulb)
•
Relative humidity range: 5% to 90% (noncondensing)
3.1.4 Electromagnetic Compliance
The board is designed and implemented so as to minimize
electromagnetic emissions, susceptibility, and the effects of electrostatic
discharge. The board carries the CE mark, C-Tick mark, FCC
Self Certification logo, Canadian Compliance Statement, and meets the
requirements of FCC and CISPR Class B.
Table 3.1 Maximum Power Requirements
+5 V DC
±
5% 1.5 A Over the operating range 5
°
C to 55
°
C