PLX Technology PEX 8311RDK, Справочник по аппаратуре

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PEX 8311RDK Hardware Reference Manual, Version 0.90
12 © 2005 PLX Technology, Inc. All rights reserved.
Table 3-5. PEX 8311RDK Power supply currents
Power Supply Maximum required by the RDK Maximum available from the Regulator
+1.5 V
DC
240mA 250mA
+2.5 V
DC
220mA 2.5A
+3.3 V
DC
450mA 5A
1
Note 1: A maximum of 1.8A is available when U4 is fed from the 12V supply of a 10W PCI Express connector.
When using the 1.5V supply to provide power to the uncommitted FPGA it may be necessary to change
U3 to a larger regulator to ensure sufficient power supply current is available.
3.6.2 PEX 8311 Power Jumpers and Resistor options
Various power jumpers and resistor options are available on the PEX 8311 RDK to allow the power
consumption of the PEX 8311 to be measured under different operating conditions.
Table 3-6 details the jumper and resistor settings for the main power options. For the uncommitted FPGA
power options please see section 4.4.2.4 Uncommitted FPGA power supplies.
Table 3-6. PEX 8311RDK Power jumper and resistor options
Jumper Factory Setting Description
J7 CLOSED +3.3V supply to PEX 8311
J8 CLOSED +1.5V supply to PEX 8311
J9 CLOSED +2.5V supply to PEX 8311
R21 ASSEMBLED Link PCI Express 12V supply to U4 (+3.3V regulator)
R22 NOT ASSEMBLED Link ATX (J4) 12V supply to U4 (+3.3V regulator)
R23 ASSEMBLED U4 (3.3V Regulator) pr3.3V supply to RDK
R27 NOT ASSEMBLED PCI Express 3.3V supply (P1) pr3.3V supply to RDK