Xilinx VC709 User Manual

VC709 Evaluation Board www.xilinx.com 57
UG887 (v1.0) February 4, 2013
Feature Descriptions
FMC_VADJ Voltage
The FMC VADJ rail is fixed at 1.8V (U63 V
OUT
B VCC1V8).
Monitoring Voltage and Current
Voltage and current monitoring and control are available for selected power rails through
Texas Instruments' Fusion Digital Power graphical user interface. The three onboard TI
power controllers (U42 at address 52, U43 at address 53, and U64 at address 54) are wired
to the same PMBus. The PMBus connector, J5, 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 Table 1-22, Table 1-23, and
Table 1-24.
In each of these the three tables (one per controller), the Power Good (PG) On Threshold is
the 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 OR's 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 and rise and fall times are
relative to when the board power on-off slide switch SW12 is turned on and off.
Table 1-22 defines the voltage and current values for each power rail controlled by the
UCD9248 PMBus controller at address 52 (U42).
REF3012 U35 Fixed linear voltage reference XADC_VREF 1.25V 27
Notes:
1. See Table 1-22.
2. See Table 1-23.
3. See Table 1-24.
4. The FMC VADJ rail is fixed at 1.8V.
Table 1-21: Onboard Power System Devices (Cont’d)
Device Type
Reference
Designator
Description
Power Rail
Net Name
Power Rail
Voltage
Schematic
Page
Table 1-22: 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 5 4 35 4 1.15 35 84
2 Rail #2 VCCAUX 1.8 1.62 1.53 20 4 20 4 2.07 9.5 84
3 Rail #3 VCC3V3 3.3 2.97 2.805 35 5 5 5 3.795 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.

Xilinx VC709 Specifications

General

Brand	Xilinx
Model	VC709
Category	Motherboard
Language	English