MITO 8M SOM/MITO 8M Hardware/General Information/Processor and memory subsystem

History
Issue Date	Notes
2020/09/29	First release

Contents

Processor and memory subsystemEdit

The heart of MITO 8M module is composed by the following components:

• i.MX8M SoC application processor
• Power supply unit
• LPDDR4 memory bank
• eMMC or NAND flash banks
• Connectors:
  • 1 x 204 pins SO-DIMM edge connector with interfaces signals
    • partially compatible with AXEL Lite SOM
  • 2 x 25 pins One Piece mating board layout Expansion

This chapter shortly describes the main MITO 8M components.

Processor InfoEdit

Table: i.MX8M models comparison

Processor	i.MX8M Dual	i.MX8M Quad
# Cores	2x Arm® Cortex®-A53 1x Arm® Cortex®-M4	4x Arm® Cortex®-A53 1x Arm® Cortex®-M4
Clock	1.3 GHz 1.5 GHz
L2 Cache	1 MB
LPDDR4	32 bit @ 1600 MHz (LPDDR4-3200)
GPU	4 Shader OpenGL ES 1.1, 2.0, 3.0, 3.1 Open CL 1.2 Vulkan
VPU	4Kp60 HEVC/H.265 main, and main 10 decoder 4Kp60 VP9 decoder 4Kp30 AVC/H.264 decoder 1080p60 MPEG-2, MPEG-4p2, VC-1, VP8, RV9, AVS, MJPEG, H.263 decoder
Display Controller	Dual Independent Display Support up tp 4kp60
Video Output	1x HDMI 2.0a 1x MIPI-DSI (with MIPI to LVDS bridge)
Camera Input	2x MIPI CSI (4-lanes each)
PCIe	2x PCIe 2.0 (1-lane each)
USB	2x USB 3.0 Dual role

RAM memory bankEdit

LPDD4 SDRAM memory bank is composed by 1x 32-bit width chip. The following table reports the SDRAM specifications:

CPU connection	Multi-mode DDR controller (MMDC)
Size max	4 GB
Width	32 bit
Speed	1600 MHz

eMMC flash bankEdit

On board main storage memory eMMC is connected to the SDIO1 interface and it can act as boot peripheral. The following table reports the eMMC flash specifications:

CPU connection	SDIO1
Size min	4 GB
Size max	64 GB
Bootable	Yes

NAND flash bankEdit

Section not completed yet

Alternative option for main storage memory can be a 8-bit wide NAND flash connected to the CPU's Raw NAND flash controller. It can act as boot peripheral. The following table reports the NAND flash specifications:

CPU connection	Raw NAND flash controller
Page size	TBD
Size min	TBD
Size max	TBD
Width	8 bit
Chip select	TBD
Bootable	Yes

Memory mapEdit

For detailed information, please refer to chapter 2 “Memory Maps” of the i.MX8M Applications Processor Reference Manual

Power supply unitEdit

MITO 8M embeds all the elements required for powering the unit, therefore power sequencing is self-contained and simplified. Nevertheless, power must be provided from carrier board, and therefore users should be aware of the ranges power supply can assume as well as all other parameters.

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