KCU105 Board User Guide www.xilinx.com 85
UG917 (v1.4) September 25, 2015
Chapter 1: KCU105 Evaluation Board Features
The KCU105 board supports both the internal FPGA sensor measurements and the external
measurement capabilities of the SYSMON. Internal measurements of the die temperature,
VCCINT, VCCAUX, and VCCBRAM are available. Header J48 can be used to select either an
external differential voltage reference (SYSMON_VREFP) or on-chip voltage reference
(jumper J48 2-3) for the analog-to-digital converter.
For external measurements SYSMON header (J75) is provided. This header can be used to
provide analog inputs to the FPGA's dedicated VP/VN input channel. The
VCCINT_SYSMON_SENSE_P/N signals from the series current sense R86 0.002 Ω VCCINT
resistor are also made available at J75. Figure 1-37 shows the header connections.
Tab le 1- 28 describes the SYSMON header J75 pin functions.
For more information on the UltraScale System Monitor (SYSMON), see UltraScale
Architecture System Monitor User Guide (UG580) [Ref 12].
X-Ref Target - Figure 1-37
Figure 1-37: SYSMON Header J75
Table 1-28: SYSMON Header J75 Pinout
Schematic Net Name
J75 Pin
Number
Description
NC 1,3 No Connect
SYSMON_DXP, SYSMON_DXN 2,4 Access to thermal diode.
SYSMON_AGND 5,6 Analog ground reference.
SYSMON_VREF 7 REF3012 U40 1.25V.
SYSMON_VCC 8 Filtered VCC1V8 or ADP123 U14 1.85V.
SYSMON_VN, SYSMON_VP 9,10 Dedicated analog input channel for SYSMON.
VCCINT_SYSMON_SENSE_P/N 11,12 MAX15301 U29 VCCINT series 0.002 Ω R86 IR-drop taps.
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