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Appendix C
Functional Description
C-15
C.1.4
PCI Riser Board
Because of the space limitations to the system enclosures, a PCI riser board is present
in the systems. The PCI riser board supports a maximum of three PCI cards.
C.1.4.1
Connector Definition
The PCI riser board uses the PCI 64-bit standard connector with revised pinout for
additional power needed to support three PCI cards. The following table lists the
PCI riser board pin summary.
■
Current rating is 1 ampere at 30˚C for each pin.
■
Pinout follows the 64-bit 5-VDC PCI specification (with modifications for
additional power).
■
The IDSEL pin for each PCI slot is reserved.
C.1.4.2
PCI Riser Board Pin Assignment
The following table lists the PCI riser board pin assignments.
TABLE C-5
PCI Riser Board Pin Summary
Pin Type
Number of Pins
Current Rating
Gnd
38
N/A
+5V
18 + 4 + 3= 25
26 amp (max)
+12V
1 + 2 = 3
2 amp (max)
-12V
1
1 amp (max)
TABLE C-6
PCI Riser Board Pin Assignment
Pin Number
Signal
Pin Number
Signal
A1
TRST_L
A9
Reserved
A2
+12V
A10
+5V
A3
TMS
A11
Reserved
A4
TDI
A12
Gnd
A5
+5V
A13
Gnd
Содержание Ultra 5
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