User Manual

When the board is turned on, the 12V input voltage provided by the bundled PCIe ATX supply is filtered and fed to the series
MOSFETs of the protection circuit. The LM5060 IC monitors the input voltage and the current drawn by the entire board. If an input
overvoltage/undervoltage or an overcurrent condition is detected, the LM5060 isolates the VCC12V0 net from the external supply by
turning off the series MOSFETs.
During normal operation the MOSFETs provide a low impedance path and the VCC12V0 net is correctly biased with 12V. This voltage
serves both as output rail for the FMC port and power input for downstream voltages.
Table 1.2.1 describes the list of power supply rails implemented on Genesys ZU. This table can be used to estimate the available power
budget for a given project.
Table 1.2.1: Genesys ZU power rails
Voltage Rail Generated from Min/Typ/Max Voltage Max
current
Used for
VCC12V0 12V power input 12V+-5% 8.5A FMC, power input for other rails
VCC5V0_STABLE VCC12V0 5V+-5% 0.306A IC81+IC80 , VCC3V3_STABLE
VCC5V0 VCC12V0 5V+-5% 4A SYZYGY, RGB
LED (), Audio,
USB-s, HDMI Rx AUX
VCC3V3_STABLE VCC5V0_STABLE 3.16V / 3.3V / 3.465V 0.224A Platform MCU, Supply I2C pull-
ups, FMC, SFP, HDMI Clock,
PCIe REFCLK
VCC3V3 VCC12V0 3.154V / 3.3V / 3.4V 7.64A DDR4 VDDSPD (I2C interface),
PCAMs, LEDs, SFP, HDMI,
FMC, FPGA Internals,
SYZYGY, PMODs, PCIe, SD
Card, WI-FI, USB 3.0, USB 2.0
Hub, USB Config, Display Port,
Flash
VADJ VCC12V0 Selectable - 1.2V / 1.5V / 1.8V
+- 5%
2.4A FMC, SYZYGY, FPGA
VCC2V5 VCC12V0 2.375V / 2.5V / 2.625V 2.1A DDR4 VPP, MGT Oscillators,
Ethernet
VCC1V8_AUX VCC12V0 1.746V / 1.8V / 1.854V 1.59A FPGA Internals, Ethernet,
DisplayPort, Audio, USB 3.0,
USB 2.0, USB Prog, SD Card
VCC1V8_MGT VCC2V7_LDOIN 1.746V / 1.8V / 1.854V 0.09A FPGA Internals
VCC1V5_PCI VCC12V0 1.5V=-5% 0.5A PCIe port
VREF1V25 VCC3V3 1.25V+-5% 0.01A XADC reference
VCC1V2_MGTAVTT VCC12V0 1.164V / 1.2V/ 1.236V 0.77A FPGA Internals
VCC1V2_PSDDR VCC12V0 1.14V / 1.2V/ 1.26V 6.87A FPGA Internals, DDR4
VCC1V1 VCC1V8_AUX 1V/ 1.1V/ 1.155V 0.49A Ethernet, HDMI
VCC0V9_MGTAVCC* VCC12V0 0.873V / 0.9V / 0.927V 0.55 FPGA Internals (5EV variant
only)
VCC0V9_VCU* VCC12V0 0.873V / 0.9V / 0.927V 2A FPGA Internals (5EV variant
only)
VCC0V85_PSMGTRAVCC VCC2V7_LDOIN 0.825V / 0.85V /0.875V 0.3A FPGA Internals