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Zynq Ult MPSoC SOM Hardware User Guide
iWave Systems Technologies Pvt. Ltd.
2.3.6
MPSoC System Monitor/ADC
The Zynq Ult MPSoC contain two System Monitor block (SYSMONE4), one in the PL (PL SYSMON) and
another in the PS (PS SYSMON). It is used to enhance the overall safety, security and reliability of the system by
monitoring the physical environment via on-chip power supply and temperature sensors.
The PL SYSMON uses 10-bit 200kSPS ADC to digitize the sensor/ADC inputs. It monitors the die temperature in the PL
and several internal PL and PS power supply nodes. The PL SYSMON can also monitor up to 17 external analog
channels which includes 16 auxiliary analog inputs and one VP_VN dedicated input. The external auxiliary inputs can
be routed through any PL Bank. The ADC voltage reference is selectable between an internal reference and the
external pins VREFP and VREFN. In Zynq Ult MPSoC SOM, 1.25V external voltage reference is supported.
The PS SYSMON uses 10-bit 1MSPS ADC to digitize the sensor inputs. It is located in the PS LPD and monitors two
temperature points & several internal fixed voltage nodes. The PS has two temperature sensors, one is physically
located in the PS SYSMON near the RPU. The second, remote sensor is located in the FPD near the APU. The ADC
always uses an internally generated voltage reference.
2.4
PMIC with RTC
The Zynq Ult MPSoC SOM supports Dialog semiconductor DA9062 PMIC. The I2C0 module of Zynq
Ult MPSoC PS is used for PMIC interface through MIO pins with I2C address 0x58.
PMIC’s LDO3 is connected to I/O voltage of PL HD Banks (PL Bank 45 & 46) and
by default set to 1.8V. The I/O voltage
is configurable through software after bootup. PMIC supports reset output and connected to Zynq Ult
MPSoC PS (PS_POR_B) for power on reset. Also PMIC supports IRQ output for events indication and connected to
MPSoC’s PS
GPIO (PS_MIO2_500).
The PMIC supports Real Time Clock functionality. It uses the Coin cell battery power from Board to Board
Connector2 pin68 for RTC backup power. The PMIC can support backup battery charging to charge Lithium-
Manganese coin cell batteries and super capacitors if required.