Xilinx KCU105 User Manual

KCU105 Board User Guide www.xilinx.com 79
UG917 (v1.4) September 25, 2015
Chapter 1: KCU105 Evaluation Board Features
The Maxim GUI regulator on/off settings are shown in Table 1-26 .
Documentation describing PMBUS programming for the Maxim InTune™ power controllers
is available at the Maxim Integrated website [Ref 36].
The PCB layout and power system design meet the recommended criteria described in the
UltraScale Architecture PCB Design User Guide (UG583) [Ref 17].
FMC VADJ_1V8 Power Rail
The KCU105 evaluation board implements the ANSI/VITA 57.1 section 5.5.1 IPMI support
functionality. The power control of the VADJ_1V8 power rail is significantly different from
other Xilinx evaluation boards, and is managed by the U111 system controller. This rail
powers both the FMC HPC (J22) and FMC LPC (J2) VADJ pins, as well as the XCKU040 HP
banks 47, 48, 66, 67, and 68 (see Table 1- 3, page 17). The valid values of the VADJ_1V8 rail
are 1.2V, 1.5V, and 1.8V.
At power on, the system controller detects if an FMC module is connected to each interface.
• If no cards are attached to the FMC ports, the VADJ voltage is set to 1.8V.
• When one FMC card is attached, its I2C EEPROM is read to find a VADJ voltage
supported by both the KCU105 board and the FMC module within the available choices
of 1.8V, 1.5V, 1.2V, and 0.0V.
• When two FMC cards are attached with differing VADJ requirements, VADJ_1V8 is set to
the lowest value compatible with the KCU105 board and the FMC modules, within the
available choices of 1.8V, 1.5V, 1.2V, and 0.0V.
• If no valid information is found in the I2C EEPROM, the VADJ_1V8 rail is set to 0.0V.
Table 1-26: Maxim Power Tool GUI Regulator Settings
Maxim Power Tool (1.08.02) PMBus Regulator Settings Schematic Reference
Regulator
Type
PMBus
Address
Vout Set
Point (V)
On Delay
Time (ms)
On Rise
Time (ms)
Off Delay
Time (ms)
Off Fall
Time (ms)
Current
(A)
Ref.
Des.
Schematic Net
Name
Page
Number
MAX15301 0x0A 0.950 4.98 2.02 25.00 2.02 40 U29 VCCINT_FPGA 52
MAX15303 0x0B 1.800 11.81 2.34 14.78 2.34 5 U10 VCCAUX_FPGA 53
MAX15303 0x0F 0.950 7.84 2.02 19.94 2.02 5 U3 VCCBRAM_FPGA 54
MAX15303 0x11 1.800 19.78 2.33 7.97 2.33 2 U9 VCC1V8_FPGA 55
MAX15301 0x12 1.800 24.84 2.34 5.11 2.34 10 U30 VADJ_1V8_FPGA 56
MAX15303 0x14 1.200 24.88 1.89 5.12 1.89 3 U4 VCC1V2_FPGA 57
MAX15301 0x1B 3.300 1.00 2.12 30.13 2.12 10 U31 UTIL_3V3 61
MAX20751E 0x72 1.000 10.00
Not
Supported
20.00
Not
Supported
5 U137 MGTAVCC_FPGA 58
MAX20751E 0x73 1.200 14.00
Not
Supported
14
Not
Supported
5 U138 MGTAVTT_FPGA 59
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Xilinx KCU105 Specifications

General

Brand	Xilinx
Model	KCU105
Category	Motherboard
Language	English