VC707 Evaluation Board www.xilinx.com 73
UG885 (v1.4) May 12, 2014
Feature Descriptions
Table 1-30 defines the voltage and current values for each power rail controlled by the
UCD9248 PMBus controller at address 52 (U42).
Table 1-31 defines the voltage and current values for each power rail controlled by the
UCD9248 PMBus controller at address 53 (U43).
Table 1-30: Power Rail Specifications for UCD9248 PMBus Controller at Address 52
Shutdown Threshold
(1)
Rail
Number
Rail
Name
Schematic
Rail Name
Nominal V
OUT
(V)
PG
On Threshold (V)
PG
Off Threshold (V)
On Delay (ms)
Rise Time (ms)
Off Delay (ms)
Fall Time (ms)
V
OUT
Over Fault (V)
I
OUT
Over Fault (A)
Temp Over Fault (°C)
1 Rail #1 VCCINT_FPGA 1 0.9 0.85 0 5 10 1 1.15 20 90
2 Rail #2 VCCAUX 1.8 1.62 1.53 0 5 5 1 2.07 10.41 90
3 Rail #3 VCC3V3 3.3 2.97 2.805 0 5 4 1 3.795 10.41 90
4 Rail #4 VADJ 1.8 1.62 1.53 0 5 3 1 2.07 10.41 90
Notes:
1. The values defined in these columns are the voltage, current, and temperature thresholds that cause the regulator to shut down if
the value is exceeded.
Table 1-31: Power Rail Specifications for UCD9248 PMBus Controller at Address 53
Shutdown Threshold
(1)
Rail
Number
Rail
Name
Schematic
Rail Name
Nominal V
OUT
(V)
PG
On Threshold (V)
PG
Off Threshold (V)
On Delay (ms)
Rise Time (ms)
Off Delay (ms)
Fall Time (ms)
V
OUT
Over Fault (V)
I
OUT
Over Fault (A)
Temp Over Fault (°C)
1 Rail #1 VCC2V5_FPGA 2.5 2.25 2.125 0 5 1 1 2.875 10.41 90
2 Rail #2 VCC1V5 1.5 1.35 1.275 0 5 0 1 1.725 10.41 90
3 Rail #3 MGTAVCC 1 0.9 0.85 0 5 7 1 1.45 10.41 90
4 Rail #4 MGTAVTT 1.2 1.08 1.02 0 5 8 1 1.38 10.41 90
Notes:
1. The values defined in these columns are the voltage, current, and temperature thresholds that causes the regulator to shut down if
the value is exceeded.