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i.MX8M SMARC SOM Hardware User Guide
iWave Systems Technologies Pvt. Ltd.
2.4
PF4210 PMIC
i.MX8M SMARC SOM uses one PF4210 PMIC for SOM Power management. The PF4210 PMIC are programmed with
standard A1 Sequence from NXP.
The PF4210 is defined to power low-cost audio/video applications using the i.MX 8M family of applications processors.
The PF4210 high performance power management integrated circuit (PMIC) provides a highly
programmable/configurable architecture with fully integrated power devices and minimal external components. With
up to six buck converters, six linear regulators, an RTC supply, and a coin cell charger, the PF4210 can provide power
for a complete system, including applications processors, memory, and system peripherals, in a wide range of
applications. In i.MX8M SMARC SOM PF4210 PMIC (U9) is placed on Top side.
2.5
Memory
2.5.1
LPDDR4 RAM
The i.MX8M SMARC SOM supports 2GB RAM using 32bit DDR_CH0 channel of CPU to support LPDDR4 up to 1.6 GHz.
LPDDR4 part (U11) is placed on Top side of the SOM. LPDDR4 memory size can be customised based on the
requirement by contacting iWave support team.
2.5.2
eMMC Flash
The i.MX8M SMARC SOM supports 8GB eMMC as default boot device and storage device. This is connected to uSDHC1
controller of the i.MX8M CPU and operates at 1.8V (I/O supply) and 3.3V (NAND core supply) Voltage levels.
The eMMC flash (U20) memory is physically located on Top side of the SMARC SOM. The memory size of the eMMC
Flash can be customised based on the requirement by contacting iWave Support Team.
2.5.3
Micro SD Connector slot (Optional)
The i.MX8M SMARC SOM optionally supports Micro SD slot which can be used to connect Micro SD card as optional
boot device as well as Mass storage device. Micro SD card connector (J3) is and eMMC both share uSDHC1 controller
of the i.MX8M CPU, hence either eMMC or microSD can be used at a time. The main power to Micro SD Card Connector
is 3.3 Voltage. The i.MX8M SMARC SOM supports configurable IO voltage levels for uSDHC1 lines through a GPIO. And
the micro SD Connector is physically located on Top side of the i.MX8M SMARC SOM.
Note: In default configuration uSDHC1 is used for on board eMMC module. Contact iWave Support team if microSD
feature is required.