The MYC-C437X CPU Module is a low-cost compact-sized SOM (System on Module) based on 1GHz TI AM437x (AM4376, AM4377, AM4378, AM4379) ARM Cortex-A9 Sitara processors from Texas Instruments (TI), featuring 3D graphics acceleration for rich graphical user interfaces, PRU-ICSS for industrial protocols, improved Vector Floating Point(VFP) unit and other peripherals and interfaces support like Quad-SPI, dual parallel cameras, two independent eight-channel ADCs, etc.

The AM437x processor family consists of 4 pin-pin compatible devices (AM4376, AM4377, AM4378 and AM4379) with various options including speed grades, packages, graphics and peripherals. MYIR delivers the MYC-C437X with AM4377 or AM4378 processor by default. From the image below we can see if you need EtherCAT support, the MYC-C4377 module would be suitable; if you need 3D graphics acceleration to support display and advanced user interfaces, the MYC-C4378 module may fit your needs.

TI AM437x Devices

MYIR has also designed two development boards for evaluating the MYC-C437X CPU Module. The two boards are all built around the MYC-C437X CPU Module but the base board designs are different to satisfy customers' different requirements. The MYD-C4378 development board features versatile peripheral interfaces extended on base board including four USB Host ports, one USB OTG, two Gigabit Ethernet ports, two CAN, two camera interfaces, TF card slot, HDMI and LCD interfaces but it could not support PRU-ICSS. While the MYD-C4377-PRU development board is designed especially for PRU-ICSS applications, it features one Gigabit Ethernet port as well as two 10/100Mpbs Ethernet ports from the PRU-ICSS subsystems and uses TI SYS/BIOS v6.45 Real-time Operating System. Besides, both of the two boards can run Linux OS and are provided with software packages and detailed documentation sources. They are excellent platforms for customers’ evaluation and prototype based on TI’ AM437x solution.

MYD-C437X Development Board

MYD-C437X-PRU Development Board

MYC-C437X Interface Diagram

Features

Mechanical Parameters

• Dimensions: 60mm x 45mm
• PCB Layers: 8-layer design
• Power supply: 5V/0.33A
• Working temperature: 0~70 Celsius (commercial grade) or -40~85 Celsius (industrial grade)

Processor

• TI AM437x (AM4376, AM4377, AM4378 and AM4379)
  - Up to 1GHz Sitara ARM Cortex-A9 32-Bit RISC processor
  - POWERVR SGX Graphics Accelerator subsystem for 3D graphics acceleration to support display and gaming effects
  - Single-cycle vector floating point (VFP)
  - Dual camera and display processing subsystem
  - Cryptographic acceleration and secure boot
  - PRU-ICSS enables simultaneous industrial Ethernet protocols and motor feedback protocols
  - Support for 32 bit LPDDR2/DDR3/DDR3L
  - Low power: ~5mW deep sleep and < 0.1mW RTC-only
  - Simplified power sequence for flexible power designs

Memory

• 512MB DDR3 SDRAM (256MB is optional)
• 4GB eMMC Flash (reserved 256/512MB Nand Flash design)
• 16MB QSPI Flash (reserved design, not soldered)
• 32KB EEPROM

Peripherals and Signals Routed to Pins
MYC-C437x Pinouts Description

• Power Management IC (TPS65218B1RSLR)
• Gigabit Ethernet PHY
• One power indicator (Red LED)
• One user LED (Green)
• Two 0.8mm pitch 100-pin board-to-board expansion connectors can carry out interfaces below
  - 2 x USB
  - 6 x Serial ports
  - 2 x I2C
  - 2 x CAN
  - 2 x SPI
  - 14 x ADC (8 channels from ADC1 and 6 channels from ADC0)
  - 3 x SDIO

OS Support

• Linux 3.12.10 (for MYD-C437X)
  
• Linux 4.1.18 (for MYD-C437X-PRU)
• SYS/BIOS 6.45 (TI-RTOS) OS (for MYD-C437X-PRU)

 

Hardware Features

The TI AM437x high-performance processors are based on the ARM Cortex-A9 core. Customers using this next generation solution will see an increase in performance, as well as extensive reuse from the ARM Cortex-A8 offerings.

Increasing performance and peripheral support
Sitara AM437x processors deliver the right balance of:
Performance
• Up to 1GHz of processing power
• 3D graphics accelerator
• On-chip quad-core PRU co-processor for real-time processing
• Improved vector floating-point unit
Interfaces
• LPDDR2/DDR3
• QSPI
• Display subsystem
Connectivity
• Two parallel camera ports
• Dual-port 1Gb Ethernet switch
• Two independent, eight-channel ADCs
• WiLink connectivity drivers
• Industrial protocols via PRU-ICSS

 

A. Use of TSC will limit available ADC0 inputs.

B. Max clock: LPDDR2 = 266 MHz; DDR3/DDR3L = 400 MHz

AM437x Function Block Diagram

MYC-C437X CPU Module Function Block Diagram

Dimensions of MYC-C437X CPU Module

 

Software Features

OS	Item	Features	Description
Linux	Bootstrap program	u-boot-201605	Bootstrap (source code)
	Kernel	Version	Linux 3.12.10 (Customized kernel for MYD-C437X, source code) Linux 4.1.18 (especially designed for MYD-C437X-PRU, source code)
	Drivers	USB Host	USB Host driver (soure code)
		USB OTG	USB OTG driver (source code)
		Ethernet	Gigabit Ethernet driver (source code)
		PRU Ethernet	Industrial Ethernet driver (source code)
		MMC/SD/TF	MMC/SD/TF card driver (source code)
		Nand Flash	Nand Flash driver (source code)
		eMMC	eMMC driver (source code)
		CAN	CAN driver (source code)
		RS485	RS485 driver (source code)
		LCD Controller	LCD driver (source code, supports 4.3, 7-inch LCD)
		RTC	RTC driver (source code)
		Touch driver	Resistive and Capacitive touch screen driver (source code)
		Button	Button driver (source code)
		LED	LED driver (source code)
		Watchdog	Watchdog driver (source code)
		Camera	Camera driver (source code)
		UART	UART driver (source code)
		SPI	SPI driver (source code)
		ADC	ADC driver (source code)
		I2C	I2C driver (source code)
	File system	Buildroot	Provide image file
		Arago	Provide image file
SYS/BIOS	Kernel	Version	SYS/BIOS 6.45 for MYD-C437X-PRU
	Evaluation environment		Code Composer Studio Version 6.2.x
	ARM compiler		GNU V4.9.3 (Linaro)
	PRU compiler		PRU 2.1.13
	Application Examples		Bootloader, EtherCAT Slave Application, EtherNet/IP Adapter Application, EtherNet MAC Application, Example Utils Application

 

Relative Download and Links

You can download relative chip datasheet, products datasheet, user manual, software package from below. Any inquiry, please contact MYIR.

1	TI AM437x Datasheet	2.76 MB
2	TI AM437x Technical Reference Manual	19.8 MB
3	MYC-C437X CPU Module Overview	1.76 MB
4	MYC-C437x Pinouts Description	60 KB
5	MYD-C437X Development Board Overview	1.9 MB
6	MYD-C437X Base Board Schematic	355 KB
7	MYD-C437X-PRU Development Board Overview	0.99 MB
8	MYD-C437X-PRU Base Board Schematic	782 KB

 

MYC-C437X CPU Module (Top-view)

MYC-C437X CPU Module (Bottom-view)

MYD-C437X Development Board

MYD-C437X-PRU Development Board

 

Item	Part No.
MYC-C4378 CPU Module (1GHz AM4378, 512MB DDR3, 4GB eMMC, commercial grade)	MYC-C4378-4E512D-100-C
MYC-C4378 CPU Module (1GHz AM4378, 512MB DDR3, 4GB eMMC, industrial grade)	MYC-C4378-4E512D-100-I
MYC-C4377 CPU Module (1GHz AM4377, 512MB DDR3, 4GB eMMC, industrial grade)	MYC-C4377-4E512D-100-I