DS925 Datasheet, PDF (13/109 Pages) Xilinx, Inc – DC and AC Switching Characteristics

Zynq UltraScale+ MPSoC Data Sheet: DC and AC Switching Characteristics
Power Supply Sequencing
PS Power-On/Off Power Supply Sequencing
The low-power system must operate before the full-power system can function. The low-power and
full-power domains can be powered simultaneously. To achieve minimum current draw and ensure that the
I/Os are 3-stated at power-on, the recommended power-on sequence for the low-power domain (LPD) is
listed. The recommended power-off sequence is the reverse of the power-on sequence.
1. V_{CC_PSINTLP}
2. V_{CC_PSAUX}, V_{CC_PSADC}, and V_{CC_PSPLL} in any order or simultaneously.
3. V_{CCO_PSIO}
To achieve minimum current draw and ensure that the I/Os are 3-stated at power-on, the recommended
power-on sequence for the full-power domain (FPD) is listed. The recommended power-off sequence is
the reverse of the power-on sequence.
1. V_{CC_PSINTFP} and V_{CC_PSINTFP_DDR} driven from the same supply source.
2. V_{PS_MGTRAVCC} and V_{CC_PSDDR_PLL} in any order or simultaneously.
3. V_{PS_MGTRAVTT} and V_{CCO_PSDDR} in any order or simultaneously.
PL Power-On/Off Power Supply Sequencing
The recommended power-on sequence is V_CCINT, V_{CCINT_IO}/V_CCBRAM, V_CCAUX/V_{CCAUX_IO}, and V_CCO to
achieve minimum current draw and ensure that the I/Os are 3-stated at power-on. The recommended
power-off sequence is the reverse of the power-on sequence. If V_CCINT and V_{CCINT_IO}/V_CCBRAM have the
same recommended voltage levels, they can be powered by the same supply and ramped simultaneously.
V_{CCINT_IO} must be connected to V_CCBRAM. If V_CCAUX/V_{CCAUX_IO} and V_CCO have the same recommended
voltage levels, they can be powered by the same supply and ramped simultaneously. V_CCAUX and V_{CCAUX_IO}
must be connected together. V_CCADC and V_REF can be powered at any time and have no power-up
sequencing requirements.
The recommended power-on sequence to achieve minimum current draw for the GTH or GTY transceivers
is V_CCINT, V_MGTAVCC, V_MGTAVTT OR V_MGTAVCC, V_CCINT, V_MGTAVTT. There is no recommended sequencing for
V_MGTVCCAUX. Both V_MGTAVCC and V_CCINT can be ramped simultaneously. The recommended power-off
sequence is the reverse of the power-on sequence to achieve minimum current draw.
If these recommended sequences are not met, current drawn from V_MGTAVTT can be higher than
specifications during power-up and power-down.
PS-PL Power Sequencing
The PS and PL power supplies are fully independent. All PS power supplies can be powered before or after
any PL power supplies. The PS and PL power regions are isolated to prevent damage.
DS925 (v1.1) June 20, 2016
Advance Product Specification
www.xilinx.com
Send Feedback
13