Voltage Voltage Rated Voltage Shut down Influences
Supply Name Value Current Source via PWR_EN PWR_GOOD
VCC_1V0 1.0 V 20 A VCC_MOD Yes Yes
VCC_1V2 1.2 V 2 A VCC_3V3 Yes Yes
VCC_DDR3 1.35 V/1.5 V 2 A VCC_3V3 Yes Yes
VCC_1V8 1.8 V 2 A VCC_3V3 Yes Yes
VCC_1V55 1.55 V 2 A VCC_1V8 Yes No
VCC_2V0
6
2.0 V 0.3 A VCC_2V5 Yes No
VCC_2V5 2.5 V 2 A VCC_3V3 Yes Yes
VCC_2V9 2.9 V 0.2 A VCC_2V9 Yes No
VCC_3V3 3.3 V 9 A VCC_MOD No Yes
Table 13: Generated Power Supplies
Please refer to the Enclustra Module Pin Connection Guidelines for general rules on the power pins [10].
2.11.2 Power Enable/Power Good
The Mercury ZX1 SoC module provides a power enable input on the module connector. This input may be
used to shut down the DC/DC converters for 1.0 V, 1.2 V, 1.35 V/1.5 V, 1.8 V, and 2.5 V. The 3.3 V supply is
always active.
The PWR_EN input is pulled to VCC_3V3 on the Mercury ZX1 SoC module with a 10 kΩ resistor. The
PWR_GOOD signal is pulled to VCC_3V3 on the Mercury ZX1 SoC module with a 10 kΩ resistor.
PWR_GOOD is an open collector signal and must not be used to drive a load directly. This signal is pulled
to GND if the on-board regulators fail or if the module is disabled via PWR_EN. The list of regulators that
influence the state of PWR_GOOD signal is provided in Section 2.11.1.
Pin Name Module Connector Pin Remarks
PWR_EN A-10
Floating/3.3 V: Module power enabled
Driven low: Module power disabled
PWR_GOOD A-12
0 V: Module supply not ok
3.3 V: Module supply ok
Table 14: Module Power Status and Control Pins
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The 2.0 V LDO is equipped only for SoC devices in FFG packages.
D-0000-403-002 25 / 56 Version 05, 25.07.2019
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