REL1.0
Page 15 of 71
i.MX8 SMARC SOM Hardware User Guide
iWave Systems Technologies Pvt. Ltd.
2.4
PF8100 PMIC
i.MX8 QM/QP SMARC SOM uses two PF8100/PF8200 PMIC for SOM Power management. Both the PF8100 PMIC are
programmed with custom Sequence code EP and EQ from NXP.
The PF8100 is a power management integrated circuit (PMIC) features seven high efficiency buck converters and four
linear regulators for powering the processor, memory and miscellaneous peripherals. Built-in one-time programmable
memory stores key start up configurations, drastically reducing external components typically used to set output
voltage and sequence of external regulators. Regulator parameters are adjustable through high-speed 3.4 MHz I2C
after start up offering flexibility for different system states. The PF8100 PMIC U6 (EP) & U3 (EQ) comes in 56pin 8x8
QFN Packages and are placed on the Top side of the SOM.
2.5
Memory
2.5.1
LPDDR4 RAM
The i.MX8 QM/QP SMARC SOM supports 4GB RAM using two 32bit 2GB LPDDR4 IC connected to DDR_CH0 and
DDR_CH1 channels of CPU to support LPDDR4 up to 1.6 GHz. Both the LPDDR4 parts U5 and U9 are 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.MX8 QM/QP SMARC SOM supports 16GB eMMC as default boot and storage device. This is connected to eMMC0
version 5.1 controller of the i.MX8 CPU and operates at 1.8V (I/O supply) and 3.3V (NAND core supply) Voltage levels.
The eMMC flash (U39) memory is physically located on bottom 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 (Optional)
The i.MX8 QM/QP SMARC SOM optionally supports Micro SD connector which can be used to connect Micro SD card
as optional boot device as well as Mass storage device. Micro SD card connector (J4) is connected to the USDHC2
controller of the i.MX8 CPU. The main power to Micro SD Card Connector is 3.3 Voltage. The i.MX8 SMARC SOM
supports configurable I/O voltage levels for USDHC2 lines through LDO2OUT of PMIC1/PMIC2. The I/O voltage level of
USDHC2 lines can be set 1.8V or 3.3V based on PMIC configuration. And the micro SD Connector is physically located
on Top side of the i.MX8 SMARC SOM.
Note: In default configuration USDHC2 is used for on board Wi-Fi module. Contact iWave Support team if microSD
feature is required or refer Application Note:
“
AN2703-i.MX8 QM SMARC SOM-Enabling On SOM Micro SD Support-
Application Note-R4.0-REL1.0.pdf
”
