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

History
Version	Issue Date	Notes
1.0.0	Jan 2021	First release

TBD: nella pagina vanno documentate le varie sezioni e documentate ad hoc a seconda del SoC (ad esempio per Bora va aggiunta la sezione PL)

Processor and memory subsystem

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

• i.MX8M Mini 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

This chapter shortly describes the main MITO 8M Mini/Nano components.

Processor Info

Table: i.MX8M Mini models comparison

Processor	i.MX8M Mini Dual	i.MX8M Mini Quad
# Cores	2x Arm® Cortex®-A53 1x Arm® Cortex®-M4	4x Arm® Cortex®-A53 1x Arm® Cortex®-M4
Clock	1.3 GHz 1.6 GHz
L2 Cache	1 MB
LPDDR4	32 bit @ 1600 MHz (LPDDR4-3200)
GPU	3D: Vivante GC NanoUltra (1 Shader) 2D: Vivante GC320 OpenGL ES 1.1, 2.0, 3.0, 3.1 Open CL 1.2 Vulkan
VPU	1080p60 HEVC/H.264, VP8, VP9, H.265 decoder 1080p60 H.264, VP8 encoder
Display Controller	Dual Independent LVDS channel Display Support up to 1080p60
Video Output	1x MIPI-DSI (with MIPI to LVDS bridge)
Camera Input	1x MIPI CSI (4-lanes)
PCIe	1x PCIe 2.1 (1-lane)
USB	2x USB 2.0 OTG

RAM memory bank

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 bank

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 bank

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 map

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

Power supply unit

MITO 8M Mini 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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