Fmc_Vadj Voltage - Xilinx VC709 User Manual

Table 1-21: Onboard Power System Devices (Cont'd)
Reference
Device Type
Designator
REF3012 U35
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.

FMC_VADJ Voltage

The FMC VADJ rail is fixed at 1.8V (U63 V
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
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
UCD9248 PMBus controller at address 52 (U42).
Table 1-22: Power Rail Specifications for UCD9248 PMBus Controller at Address 52
Rail Rail Schematic
Number Name Rail Name
1 Rail #1 VCCINT_FPGA
2 Rail #2 VCCAUX
3 Rail #3 VCC3V3
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.
VC709 Evaluation Board
UG887 (v1.0) February 4, 2013
Description
Fixed linear voltage reference
1-24.
defines the voltage and current values for each power rail controlled by the
1 0.9 0.85
1.8 1.62 1.53
3.3 2.97 2.805
www.xilinx.com
Power Rail
Net Name
XADC_VREF
B VCC1V8).
OUT
Table 1-22,
5 4 35 4
20 4 20 4
35 5 5 5
Feature Descriptions
Power Rail Schematic
Voltage Page
1.25V 27
Table 1-23, and
(1)
Shutdown Threshold
1.15 35 84
2.07 9.5 84
3.795 9.5 84
57