KCU116 Board User Guide 77
UG1239 (v1.2) September 28, 2018 www.xilinx.com
Chapter3: Board Component Descriptions
The KCU116 board supports both the internal FPGA sensor measurements and the external
measurement capabilities of the SYSMON. Internal measurements of the die temperature,
V
CCINT
, V
CCAUX
, and V
CCBRAM
are available. Header J90 can be used to select either an
external differential voltage reference (SYSMON_VREFP) or on-chip voltage reference
(jumper J90 2-3) for the analog-to-digital converter.
For external measurements the SYSMON header (J93) is provided. This header can be used
to provide analog inputs to the FPGA’s dedicated VP/VN input channel. The
VCCINT_VIN_R_P/N signals from the V
CCINT
regulator circuit series current sense 0.002Ω
resistor R36 are also made available at J93 pins 11 and 12.
X-Ref Target - Figure 3-30
Figure3‐30: KCU116 SYSMON and SYSMON Header J93 Voltage Source Options
FPGA
VCCADC
U1
SYSMON_VCC
SYSMON Header J93
GNDADC
SYSMON_VCC
Ferrite Bead
VCCAUX
100 nF
Close to
Package Pins
SYSMON_AGND
SYSMON_AGND
VREFP
REF3012
Out In
Gnd
SYSMON_AGND
Ferrite Bead
GND
SYSMON_VREFP
J90
100 nF
Close to
Package Pins
SYSMON_AGND
VREFN
100Ω
2700 pF
100Ω
VP
VN
DXP
DXN
To
Header
J93
SYSMON_AGND
Star Grid
Connection
10 μF
0.47 μF
U64
VREF(1.25V)
X18424-120916
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