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User’s Manual for Advantech SOM-A2558 series module V1.00

2.2.2 COM

SOM-A255x series (SOM-A2552, SOM-A2558, SOM-A255F) all support 5

xRS-232 ports: 3 full function (FF) RS-232 ports, 1x 2-wire (RX, TX) RS-232 and 1x 3-wire (RX, TX, RTS) RS-232 port. COM port function assignments are as following:

ØCOM1: FF RS-232

ØCOM2: FF RS-232

ØCOM3: FF RS-232

ØCOM4: 2-wire (RX, TX) RS-232

ØCOM5: 3-wire (RX, TX, RTS) RS-232

All RS-232 ports are TTL levels.

According to user target CSB demand, user could define COM5 as 3-wire (RX, TX, RTS) RS-232 port or pass through RS-485 transceiver to act as RS-485 function. User could references “Advantech SOM-A255x series CSB design guide “to design the COM5.

2.2.3 USB 1.1 Host

SOM-A255F & SOM-A2558 series supports 2 USB host ports. SOM-A2552 series supports 1 USB host port. The USB host ports on the SOM-A255x are USB 1.1 compatible. The default Windows CE.NET and Linux on board support USB keyboards, mice and mass storage devices. User could check the " SOM-A255x series verified compatible peripherals list " to know the verified compatible peripherals. If user wants to connect other devices, it may take customization on the Windows CE.

2.2.4 USB 1.1 client

The USB client port on the SOM-A255x is USB 1.1 compatible. USB client connector is used to communicate with master device (ex: PC) for ActiveSync. About SOM-A255x series ActiveSync installation, please reference to “Installation Guide-Advantech RISC platform with Microsoft ActiveSync 3.7”.

2.2.5 T/S

SOM-A255x series supports 4-wires (X+, X-, Y+, Y-) resistive T/S interface.

2.2.6 PCMCIA/CF

All SOM-A255x series supports 2 PCMCIA interface (I/F) or 2 CF I/F or 1 PCMCIA & 1 CF I/F. User could check “ SOM-A255x Series Carrier Board Design Guide “ to know how to design the I/F.

PCMCIA/CF I/F power control circuit is designed on SOM module, so PCMCIA/CF I/F is hot-swappable.

Advantech strongly suggest user to design one CF or one PCMCIA slot on user’s target carrier board, even user doesn’t need this port in target product. Advantech platform always use CF or PCMCIA slot to be system S/W upgrading port. If user doesn’t design 1 CF or PCMCIA slot on carrier board, user will run into trouble when user wants to upgrade image, boot loader & boot-logo.

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Advantech SOM-A2558 user manual 2 COM, USB 1.1 Host, USB 1.1 client, 5 T/S

SOM-A2558 specifications

The Advantech SOM-A2558 represents a significant advancement in system-on-module (SOM) technology, designed to meet the needs of demanding applications in industries such as industrial automation, transportation, and smart cities. Featuring the Intel Apollo Lake processor, specifically the dual-core or quad-core options, the SOM-A2558 delivers an optimal blend of performance and efficiency.

At the core of the SOM-A2558 is the Intel Atom E3950 or E3940 processors, which enable robust processing capabilities while maintaining low power consumption. This is crucial for embedded systems that require continuous operation in energy-sensitive environments. The module supports up to 8GB of DDR4 memory, enhancing its multitasking abilities and enabling it to handle complex applications with ease.

One of the standout features of the SOM-A2558 is its extensive array of I/O options, including USB 3.0, UART, I2C, SPI, and GPIO. This versatility allows for seamless integration with various peripherals and sensors, making it ideal for IoT applications and industrial automation systems. The SOM also supports dual Gigabit Ethernet ports, providing high-speed network connectivity essential for real-time data transfer and communications.

In terms of graphics, the SOM-A2558 supports Intel HD Graphics, which enhances the visual performance for display applications. With integrated hardware-accelerated video decoding and support for 4K resolution, it is suitable for applications such as digital signage and multimedia processing.

Advantech has designed the SOM-A2558 for durability and reliability, featuring a wide operating temperature range from -40°C to 85°C, making it suitable for harsh environments. Additionally, the module's compact form factor ensures easy integration into various system designs, allowing developers to create tailored solutions without significant space constraints.

The SOM-A2558 also supports multiple storage options, including eMMC, SATA III, and M.2 interfaces, which provide flexibility for different storage needs and configurations. Its support for TPM 2.0 enhances security, a vital aspect for applications handling sensitive data.

In summary, the Advantech SOM-A2558 combines cutting-edge technology, extensive connectivity options, and robust performance to facilitate the development of innovative solutions across various sectors. Its features make it an excellent choice for developers looking to create reliable and efficient embedded systems.