Advantech SOM-A2558 Buzzer Control Interface, System Management Bus SM Bus interface, Power-input

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

ØnSW_RESET : software rest input pin. The pin is pulled high in SOM-A255F. The pin is triggered by signal falling edge.

ØnSA_PWR_ON : Suspend/wake-up pin. The pin is pulled high in SOM-A255F. The pin is triggered by signal falling edge.

2.2.13 Buzzer Control Interface

SOM-A255x series all support this function. Buzzer-out control signal is designed to control the buzzer on/off status.

If users want to design buzzer on CSB to be reminding or alarm system, user could reference “Advantech SOM-A255x series CSB design guide “.

If users want to control the buzzer, users can check the memory map to do it.

2.2.14 System Management Bus (SM Bus) interface

SOM-A255x series SM Bus is implemented by PXA255 I2C bus. If users’CSB is powered by battery pack with SM bus battery gauge IC, then users could connect the SOM-A255x SM Bus to battery pack to monitor battery status. SOM-A255x series SM bus directly support TI BQ2040 gas gauge IC.

2.2.15 Power-input

SOM-A255x needs 3.3V & 5V DC power inputs. The power sources (3.3V,

5V) must always be supplied even in system sleep mode. SOM-A255x power management is completely implemented on itself; users’CSB doesn’t need to control the power supply to SOM-A255x.

2.2.16 Back-up power input

If user want to keep the real time clock(RTC) works well in power off mode, user should connect the coin battery positive pin to BAT-VCC in X2

directly .The back-up power pin (BAT_VCC) is the only power source to supply RTC power when SOM-A255x system power (3.3V, 5V) is off.

The coin battery must be 3.0V Li-ion coin type.

The coin battery charging circuit is designed on SOM-A255x, so user shouldn’t and needn’t design the charging circuit on CSB.

If users don’t need RTC function in CSB, just let the BAT_VCC pin open.

2.2.17 PCI I/F (Thru X3)

SOM-A2558 & SOM-A255F could support 4 channels PCI device controllers on CSB. The PCI clock is 33 MHz. PCI I/F comes from Advantech EVA-C210 I/O enhancement chip. The PCI I/F feature is as followings:

-Compatible with PCI specification version 2.2

-32-bit data bus interface

-Built-in PCI bus arbiter

-Supports up to 3 individual external bus master devices

-Support PCI Bus Controller (FPCI) to PCI slave I/O read/write, memory read/write, configuration read/write cycle

-PCI Bus master support all disconnect types (Master-Abort, Target-Abort, Target-Retry, Disconnect with data, Disconnect without

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Contents User’s Manual Copyright AcknowledgementsRevision History Version Date Reason SOM-A2558 series Design highlight SOM-A2558 series Architecture 1.1 IntroductionSOM-A200 architecture SOM-A2558 benefit SOM-A2558 series ApplicationTesting Set SOM-A2558 series design-in packageSOM-A255x series support CD includes Software Development ToolsRisc CE-Builder LCD-A057-STQ1-0 Optional itemLCD-A064-TTV1-0 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 Power System Requirement Power ConsumptionSymbol Description Min Typ Max Input DC Operating ConditionsConnector Locations Assignments and DescriptionsSOM Connector vendor table Vendor CSB Mating Connector table VendorX2 SODIMM-200 connector X3 Feature Extension connectorPin Definition SODIMM-200 Pin Out TableJP1 PXA255 Jtag pin header Pin typeSASKTA15 SASKTA12SASKTA13 SASKTA10GND SASKTA25AC97EAPD AC97LINEINSASKT0VCC Pwren BatvccNDCIN SysvccSmbusdat UsbcpBuzzerout USBLINK5VUART3RTS UART2CTSUART3TXD UART2DTRVddena VeeenaVbkena USBN1UART4RXD UART5RTSUART4TXD UART5TXDFlmvsync CrtsdaLphsync ADDR15 ADDR14ADDR13 ADDR12ADDR20 ADDR22Bufrdy DATA15Bufsdclk BufsdckeADDR0 ADDR1DATA16 DATA17DATA18 DATA19Displayir PXAGP7LAN1IRQ UsbirqPXAGP84 PXAGP83DMAREQ1 Mbreq DMAACK1Mbgnt PCIAD0PCIAD2 PCIAD3PCIAD4 PCIAD5PCIAD16 PCIAD17PCIAD18 PCIAD19System Bus 2 COM USB 1.1 HostUSB 1.1 client 5 T/SAudio AC’97 Codec on board 7 SD/MMCCRT-out System Reset Interface Zoom Video ZV portPower-input Back-up power inputBuzzer Control Interface 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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