Avago Technologies LSI21040 - Manual (Page 46)

3-2 Specifying the Technical Characteristics
The component height on the top and bottom of the board conforms to
the PCI Local Bus Specification Revision 2.2.
Figure 3.1 illustrates the
details of the LSI21040 mechanical drawing.
Figure 3.1 LSI21040 Mechanical Drawing
3.1.2 Electrical Characteristics
Under normal conditions, the LSI21040 maximum power requirement
that includes SCSI TERMPWR is: +5 V DC,
±
5%, 3.0 A, and over the
operating range 0
°
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 (F1) opens.
The PCI PRSNT1/ and PRSNT2/ pins are set to indicate a 15 W maximum
configuration.
5
J2 J4
J5
J6
J3
J1T
C
VDDA2
VSSA2
U6
U3 U2 U1
U7 U8
U10
U11
U12
U14 U13
U17
U16
U18
U15
VDDA
VSSA
A23
A1
LSI LOGIC HOST ADAPTER
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All Rights Reserved
AC23
AC1