Xilinx AC701 User Manual page 65

Monitoring Voltage and Current
Voltage and current monitoring and voltage control are available for the TI controlled power rails
through the Texas Instruments Fusion Digital Power Designer GUI. The two onboard TI
UCD90120A power controllers (U8 at PMBus address 101 and U9 at address 102) are wired to the
same PMBus. The PMBus connector, J2, is provided for use with the TI USB Interface Adapter
PMBus pod (TI part number EVM USB-TO-GPIO) and associated TI Fusion Digital Power
Designer GUI. This is the simplest and most convenient way to monitor the voltage and current
values for the power rail listed in
Record
In
set-point at or above which the particular rail is deemed good. The PG Off Threshold is the set-point
at or below which the particular rail is no longer deemed good. The controller internally ORs these
PG conditions together and drives an output PG pin High only if all active rail PG states are good.
The on and off delay parameter values are relative to when the board power on-off slide switch
SW15 is turned on and off.
Table 1-28
U8 controller at PMBus Address 101.
Table 1-28: Power Rail Specifications for UCD90120A PMBus Controller U8 at Address 101
Nominal
Rail
Voltage
1 VINT_1V0 1.000
2 VAUX_1V8 1.800
3 VBRAM_1V0 1.000
4 FPGA_1V5 1.500
Table 1-29
U9 controller at PMBus Address 102.
Table 1-29: Power Rail Specifications for UCD90120A PMBus Controller U9 at Address 102
Nominal
Rail
Voltage
1 VADJ_2V5 2.500
2 FPGA_1V8 1.800
3 FPGA_3V3 3.300
4 MGTVC_1V0 1.000
5 MGTVT_1V2 1.200
AC701 Evaluation Board
UG952 (v1.4) August 6, 2019
54022.
Table 1-28 and Table 1-29 (one per controller), the Power Good (PG) On Threshold is the
defines the voltage and current values for each power rail controlled by the UCD90120A
Power Good On Power Good Off
0.900 –10.0% 0.850
1.620 –10.0% 1.530
0.900 –10.0% 0.850
1.350 –10.0% 1.275
defines the voltage and current values for each power rail controlled by the UCD90120A
Power Good On Power Good Off
2.250 –10.0% 2.125
1.620 –10.0% 1.530
2.970 –10.0% 2.805
0.900 –10.0% 0.850
1.080 –10.0% 1.020
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Table 1-28 and Table 1-29. For more information, see
Turn
Turn On
Off
Delay
Delay
(ms)
(ms)
–15.0% 0.0 15.0
–15.0% 10.0 5.0
–15.0% 5.0 10.0
–15.0% 15.0 0.0
Turn Turn
On Off
Delay Delay
(ms) (ms)
–15.0% 5.0 15.0
–15.0% 10.0 10.0
–15.0% 0.0 20.0
–15.0% 5.0 5.0
–15.0% 10.0 0.0
Feature Descriptions
Answer
Rail Turn-on
Fault
Dependencies
Shutdown
Slaves
Rail GPI
Rail #2,3,4 None None
Rail #1,3,4 Rail #3 None
Rail #1,2,4 Rail #1 None
Rail #1,2,3 Rail #2 None
Rail Turn-on
Fault
Dependencies
Shutdown
Slaves
Rail GPI
FMC_
Rail #2,3,4,5 Rail #3 VADJ_
ON_B
Rail #1,3,4,5 None None
Rail #1,2,4,5 None None
Rail #1,2,3,5 Rail #2 None
Rail #1,2,3,4 Rail #4 None
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