Xilinx VC709 - Page 58

58 www.xilinx.com VC709 Evaluation Board
UG887 (v1.0) February 4, 2013
Chapter 1: VC709 Evaluation Board Features
Table 1-23 defines the voltage and current values for each power rail controlled by the
UCD9248 PMBus controller at address 53 (U43).
Table 1-24 defines the voltage and current values for each power rail controlled by the
UCD9248 PMBus controller at address 54 (U64).
Table 1-23: 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 35 5 5 1 2.875 9.5 84
2 Rail #2 VCC1V5 1.5 1.35 1.275 30 5 10 1 1.725 9.5 84
3 Rail #3 MGTAVCC 1 0.9 0.85 10 4 35 4 1.45 9.5 84
4 Rail #4 MGTAVTT 1.2 1.08 1.02 15 4 25 4 1.38 9.5 84
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 1-24: Power Rail Specifications for UCD9248 PMBus Controller at Address 54
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 VCCAUX_IO 2 1.8 1.7 25 5 15 5 2.3 9.5 84
2 Rail #2 NOT USED 1 0.9 0.85 35 4 5 4 1.15 9.5 84
3 Rail #3 MGTVCCAUX 1.8 1.62 1.53 15 4 25 4 2.07 9.5 84
4 Rail #4 VCC1V8_FPGA 1.8 1.62 1.53 30 4 10 4 2.07 9.5 84
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.