VCU1287 Characterization Board
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16
UG1121 (v1.0) December 11, 2015
Chapter 3:
Board Component Descriptions
Using External Power Sources
Callout 19,
Figure 2-1
Each voltage rail for the FPGA logic and MGT transceiver has an associated Euro-Mag
spring-clamp terminal block that can be used to provide power from an external source
(
Table 3-2
).
CAUTION!
Do NOT apply power to any of the FPGA logic external power supply connectors without
first disabling the associated regulator or regulators. Failing to disable the regulator can damage the
board.
Each onboard FPGA logic regulator can be disabled using its respective power regulation
inhibitor dip switch (callout 18,
Figure 2-1
). A regulator is disabled when the power
regulation inhibitor switch is set to the ON position.
Table 3-2
shows a list of external power
connections for the different power rails.
Maxim MAX15027
U25
Fixed LDO regulator
VCC_1V8
1.8V
CAUTION!
The output voltages of the Max15301 can be reprogrammed using the Maxim InTune Digital Power
Tool
[Ref 5]
. However,
extreme caution
must be taken when attempting to modify any of the onboard
regulators. An incorrectly programmed regulator can damage onboard components.
Notes:
1. The MAX20751EKX device has limited nonvolatile memory reprogramming saves (four counts).
Table 3-1:
Onboard Power System Devices
(Cont’d)
Device Part
Number
Reference
Designator
Description
Power Rail Net
Name
Voltage
Table 3-2:
FPGA Logic and MGT Transceiver Rails
Power Rail Net
Name
External Supply
Connector (s)
Power Regulation
Jumper
FPGA Logic
VCCINT
J25
J22
VCCAUX
J23
VCCBRAM
J20
VCCO_HP
J19
VCCO_HR
J18
GTH Transceiver
MGTAVCC_R
J26
J15
MGTAVTT_R
J16
MGTVCCAUX_R
J17
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