The board contacting the Cortex-A5 processor is not a day two days. The first contact is when playing Atmel Sama5d3 XPlained board, then played Mier Technology's myd-sama5d3, until the last time, started Atmel Sama5D4 XPLained Ultra, although all based on the ARM Cortex-A5 processor development board, but the manufacturer is different, the board's peripheral resources are not the same, to be honest, atmel's own Cortex-A5-based board peripheral resources is less. Basically, it is an extension IO. For engineers like DIY, it is good for me, but also like Mil Technology's Cortex-A5 board, including core plates and bottom plates, can expand DIY, The peripheral resources are rich, and there are many routines, and it is also suitable for learning assessment. Recently, fortunately, I was very excited to get the trial of Mir Technology on the panel online. It is very excited to share with you in this article.
MYD-JA5D44 development board
The Cortex-A5 board, which is the Mil Technology introduced MiD-JA5D44 development board. Based on the Atmel Sama5D4 series of microcontrollers, from the box to the box, Mir Technology should have worked hard to redesite, and also focused Highlight its own brand.
MYD-JA5D44 development board is a feature-rich assessment platform. Open packaging can see the internal accessories, from the purchase of the engineer, the engineer does not cost too much energy in the expansion module, the extended line is small Troubleshooting. However, no LCD screen is a regret that users need to spend an extra money to buy, and the price is not cheap.
The MYD-JA5D44 development board consists of the bottom plate and the core board. It is basically the traditional Mil Technology Industrial Control Panel. The core board uses the SO-DIMM design with a smaller size and the interface standardization, which can be convenient to user design, and the bottom plate It is an extension of the core board peripheral interface function and is used to evaluate the core board.
MYD-JA5D44 Development Board Main Features:
Processor Atmel ATSAMA5D42 / ATSAMA5D44 (Supports 2 core boards), 600MHz running frequency
Memory 512MB NAND-FLASH, 512MB DDR2 SDRAM
Audio interface an audio 3.5mm input interface, a 3.5mm output interface
1 road 24-bit RGB interface, all the way HDMI display output
Standard JTAG interface
Micro SD card interface
2 RS232 level interface, 1 way RS485 interface
3-way USB interface (2 high speed USB HOST, 1 way mini usb host / device)
2-way 10 / 100M Zhao Ethernet interface
1 Road ISI camera interface, 1 channel SMD interface
4 buttons (wake up, flash chip, reset, users)
1 1225 Button Battery Interface
LED indicator
Related recommendation based on ARM development board:
The SVTronics OMAP5432 evaluation board is a Cortex-A15, Cortex-M4 can be easily assessable for various applications that require high performance processing and graphics functions under low power consumption.
The STM32F469NI MCU exploration kit is a Cortex-M4 core-based network application for wearable devices, smart home, etc. Internet applications for the Internet applications that need to implement graphical interactive interfaces provide the killer level.
WIZNET W7500 Evaluation Board A single-chip solution based on a Cortex-M0 kernel is suitable for a variety of embedded application platforms, especially the Internet of Things.
Core board
The core plate is designed with a 8-layer board. The interface has a SO-DIMM of 200 feet. The size is only 67.6mm * 45mm, which is equivalent to a notebook memory module, and the board mainly includes processor and memory, which only needs to replace the core board. A variety of type microprocessors can be assessed. In addition to SAMA5D44 MPU, the core plate also includes a 100 pHY, NAND FLASH, SPI Flash, DataFlash, SDRAM and other resources.
The onboard resources are shown below:
Atmel Sama5D4 MPU, 600MHz
512MB DDR2 SDRAM, 512MB NAND FLASH, 4MB DATAFLASH, 64KB EEPROM
1 Road 10 / 100M Ethernet PHY
A power indicator (red) and a user LED (blue)
2-way 100M network, all the way I have integrated PHY chip, all the way to take an external PHY chip
Scalable 3 USB (2 high speed USB HOST, 1 way mini usb host / device)
Can expand 8 serial port, expand 4 TWI bus, can expand 3 SPI
5 roads 12-bit ADC sampling and touch features, 2 roads 4-bit SDIO interface, can expand 1 SMD interface, how old is 128 GPIO
Of course, there is a reuse of the IO port in the above resources, and the user needs to be rationally assigned an IO port in accordance with the needs of its own project. The microprocessor of the core plate uses Atmel Sama5d4, which is a highly integrated ARM Cortex-A5 processor embedded MPU belonging to the Atmel Sama5D4 Series MPU. The SAMA5D4 operating frequency is 600MHz, integrated with rich communication features and peripheral interfaces.
For Sama5d4's MPU, it is also very obvious compared to the previous generation SAMA5D3 series:
As can be seen from the above figure, SAMA5D4 has significantly improved in the performance of the CPU, and more inclined to safety, but the speed of the Ethernet is reduced, and support for CAN is removed. So where is the improvement of Sama5D4?
Neon is a 128-bit SIMD (single-instruction multi-data) extended structure, which is an implementation of SIMD. The processor with Neon technology is equipped with 32 64-bit registers and 16 128-bit registers, respectively, respectively (D0-D31, Q0-Q15). Neon is used to accelerate high precision calculations and complex algorithms, on SAMA5D4, can be used more support for multimedia.
L2 cache is a secondary cache, which is an important parameter we purchase, and the role is of course to make up for the speed difference between DDR memory and CPU-level cache.
Hardware video decoding, today's video has entered the HD era, processors for multimedia applications If there is no hardware decoder, it is like a 1080p video than a few years ago.
Advanced ATMEL's security technology, it is possible to prevent forgery, protect external communication, system authentication, main functions: external DDR code real-time encryption / decryption, encryption engine supports AES / 3DES, RSA, ECC-TRNG, SHA, tamper detection Pins, memory protection (key storage)
Related recommendation based on ARM development board:
The SVTronics OMAP5432 evaluation board is a Cortex-A15, Cortex-M4 can be easily assessable for various applications that require high performance processing and graphics functions under low power consumption.
The STM32F469NI MCU exploration kit is a Cortex-M4 core-based network application for wearable devices, smart home, etc. Internet applications for the Internet applications that need to implement graphical interactive interfaces provide the killer level.
WIZNET W7500 Evaluation Board A single-chip solution based on a Cortex-M0 kernel is suitable for a variety of embedded application platforms, especially the Internet of Things.
MYD-JA5D44 development board peripheral
The backplane of the MYD-JA5D44 development board is a universal floor, integrated with a large number of peripheral resources, and can evaluate all of the microprocessor core boards.
Some peripheral interfaces of the bottom plate:
Serial port, power Jack port, power switch, USB HOST interface / miniusb OTG interface
RS485, JTAG, expansion IO port, ISI camera interface
MicroSD card, button battery, microphone, mechanical buttons, audio input / output, HDMI
LCD interface, network port, SMD interface
Demo demonstration
Since there is no screen, temporarily via the serial port to see the startup of the MYD-JA5D44 development board, let's take a look at the working situation on the development board.
The system started from the serial port can see the board running the Linux custom YOCTO system.
Since the factory has been built into the system, it also saves the work of re-burning systems, directly with the factory built-in system to test some of the officially provided DEMO programs, copy the Examples routines in the disc supplied in Mil Technology.
For example, you can copy to the USB flash drive, and then insert the U disk to the developer, which is very easy to obtain information.
First look at the U disk which partition
Then create a folder with mkdir, and then use the mount command to mount the U disk partition to the created folder directory, find the corresponding routine
Serial test
RTC test, check the time date at this time
Set the current correct time date, view
It is necessary to say that although Mil Technology provides some official routines for users to refer, but from actual use, these routines are not applicable to any development board, such as the current MYD-JA5D44 development board, quite example Cheng is not suitable, if you need to test more features or to modify according to the actual situation, this article will not explain more.
summary
ARM926, ARM1176 These classic processors have always been a role in traditional industrial control field, we can see their active figure everywhere, and with the release of ARM Cortex-A5 processors, there is a powerful competition in this field. In contrast, the advantage of Cortex-A5 is obvious, regardless of performance or power consumption, whether in performance or power consumption. Mil Technology's work control board MYD-JA5D44 development board in Mil Technology has a rich peripheral resource and matching hardware and software development resources, information, and customizable services, can be widely used in industrial Embedded applications, including factory and building automation, smart grid, medical and hand-held terminals, as well as smart watches, outdoor GPS, digital enhanced cordless communication phones and other consumer product applications.
Related recommendation based on ARM development board:
The SVTronics OMAP5432 evaluation board is a Cortex-A15, Cortex-M4 can be easily assessable for various applications that require high performance processing and graphics functions under low power consumption.
The STM32F469NI MCU exploration kit is a Cortex-M4 core-based network application for wearable devices, smart home, etc. Internet applications for the Internet applications that need to implement graphical interactive interfaces provide the killer level.
WIZNET W7500 Evaluation Board A single-chip solution based on a Cortex-M0 kernel is suitable for a variety of embedded application platforms, especially the Internet of Things.
Original declaration: This article is originally created by the panel network, declined!
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