Advantech SOM-A2558 user manual 7 SD/MMC, Audio AC’97 Codec on board, CRT-out

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

2.2.7 SD/MMC

All SOM-A255x series supports 1 slot SD/MMC port. The Multi Media Card (MMC) is a low cost data storage and communication media. The MMC controller in the SOM-A255x is compliant with The Multi Media Card System Specification, Version 2.1. The only exception is one and three byte data transfers are not supported.

SD/MMC I/F in SOM-A255x only support 1-bit memory mode, not support I/O mode.

2.2.8 Audio (AC’97 Codec on board)

All SOM-A255x uses Realtek ALC202 AC97 audio Codec on SOM module. SOM-A255x series provides mono microphone-in, stereo line-in, and stereo line-out interface. If users want to drive speakers, users could follow the “Advantech SOM-A255x series CSB design guide “to design the audio amplifier on CSB.

2.2.9 CRT-out

SOM-A255F & SOM-A2552 series supplies CRT-out I/F which resolution is up to 1024*768. CRT-out function comes from SM501. CRT-out signals are all analog signals; user must follow the analog signals layout rules.

SOM-A2558 series doesn’t support CRT-out function, but user could design CRT-out solution IC on CSB to add the function on SOM-A2558 platform. About detail implement way, please check “Advantech SOM-A255x series CSB design guide “.

2.2.10LCD TTL interface w/LCD Brightness & Contrast Control interface

SOM-A2552 & SOM-A255F series LCD-out interface comes from SM501. SOM-A2552 & SOM-A255F LCD-out supports 24 bit and resolution up to 1024*768. SOM-A2552 & SOM-A255F supports both active and passive LCD displays. SOM-A2558 series LCD-out function comes from SoC PXA255. SOM-A2558 LCD-out supports 16 bit and resolution up to 800*600.

The LCD signals are 3.3V level in X2. If users’CSB want to drive 5V level panel, users could design buffers on CSB to translate LCD signals level. User could refer “Advantech SOM-A255x series CSB design guide “.

Advantech design LCD brightness control circuit & LCD contrast control circuit on SOM-A255x series modules. STN LCD panel needs contrast control signals. In X2, LCD contrast control signals are nVCONR_INC, VCONR_CS and VCONR_UnD. The control signals are based on DALLAS DS1804 NV Trimmer Potentiometer to design. Users could check the “Advantech SOM-A255x series CSB design guide “ to know how to wire. User could check “to know how to control.

Brightness control signals are used to control the LCD backlight inverter lamp current. In X2, LCD brightness control signals are nVBRIR_INC, VBRIR_CS and nVBRIR_UnD. The control signals are based on DALLAS DS1804 NV Trimmer Potentiometer to design. Users could check the “Advantech SOM-A255x series CSB design guide “to know how to wire. User could check appendix about SOM-A255F memory map to know how to control.

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Contents User’s Manual Copyright AcknowledgementsRevision History Version Date Reason SOM-A200 architecture SOM-A2558 series Architecture 1.1 IntroductionSOM-A2558 series Design highlight SOM-A2558 benefit SOM-A2558 series ApplicationSOM-A255x series support CD includes Testing SetSOM-A2558 series design-in package Software Development ToolsLCD-A064-TTV1-0 Optional item Risc CE-BuilderLCD-A057-STQ1-0 Optional item LCD-A104-TTS1-0 Optional itemSOM-A2558 Block diagram SoC Intel XScale PXA255 introduction Enhance I/O chip Advantech EVA-C210 introductionSystem Memory CpldSystem Specifications SOM-A2558 standard product specification tableFCC/CE Mechanical Specification Symbol Description Min Typ Max Power System RequirementPower Consumption Input DC Operating ConditionsConnector Locations Assignments and DescriptionsX2 SODIMM-200 connector SOM Connector vendor table VendorCSB Mating Connector table Vendor X3 Feature Extension connectorJP1 PXA255 Jtag pin header Pin DefinitionSODIMM-200 Pin Out Table Pin typeSASKTA13 SASKTA15SASKTA12 SASKTA10AC97EAPD GNDSASKTA25 AC97LINEINSASKT0VCC NDCIN PwrenBatvcc SysvccBuzzerout SmbusdatUsbcp USBLINK5VUART3TXD UART3RTSUART2CTS UART2DTRVbkena VddenaVeeena USBN1UART4TXD UART4RXDUART5RTS UART5TXDLphsync CrtsdaFlmvsync ADDR13 ADDR15ADDR14 ADDR12Bufrdy ADDR20ADDR22 DATA15ADDR0 BufsdclkBufsdcke ADDR1DATA18 DATA16DATA17 DATA19LAN1IRQ DisplayirPXAGP7 UsbirqDMAREQ1 PXAGP83PXAGP84 Mbgnt MbreqDMAACK1 PCIAD0PCIAD4 PCIAD2PCIAD3 PCIAD5PCIAD18 PCIAD16PCIAD17 PCIAD19System Bus USB 1.1 client 2 COMUSB 1.1 Host 5 T/SCRT-out 7 SD/MMCAudio AC’97 Codec on board System Reset Interface Zoom Video ZV portBuzzer Control Interface Power-inputBack-up power input System Management Bus SM Bus interfaceData SOM-A2552 series don’t support PCI I/F

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.
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