Advantech SOM-A2552 USB 1.1 Host, USB 1.1 client, 5 T/S, 7 SD/MMC, Audio AC’97 Codec on board

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User’s Manual for Advantech SOM-A2552 series module V1.00

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.

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

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Contents Advantech Risc SOM-A2552 Series Module User’s ManualAcknowledgements CopyrightRevision History Version Date Reason SOM-A200 architecture SOM-A2552 series Architecture 1.1 IntroductionSOM-A2552 series Design highlight SOM-A2552 benefit SOM-A2552 series design-in package Testing SetSOM-A255x series support CD includes Software Development ToolsLCD-A057-STQ1-0 Optional item Risc CE-BuilderLCD-A064-TTV1-0 Optional item LCD-A104-TTS1-0 Optional itemSOM-A2552 Block diagram Enhance Graphic Chip SMI SM501 introduction SoC Intel XScale PXA255 introductionSystem Memory Cpld System SpecificationsAudio Codec Mechanical Specification Power Consumption Power System RequirementSymbol Description Min Typ Max Input DC Operating ConditionsAssignments and Descriptions Connector LocationsX2 SODIMM-200 connector CSB Mating Connector table VendorX3 Feature Extension connector X1 AMI busSODIMM-200 Pin Out Table Pin DefinitionJP1 PXA255 Jtag pin header Pin typeSASKTA6 SASKTA9SASKTA7 SASKTA4Micin AC97LINEINSASKT1VCC SASKT1RDYPwren SASKT0VCCBatvcc Sysvcc NDCINSYSVCC3P3 SmbusdatBuzzerout UsbcpUSBLINK5V UART2RTSUART3TXD UART2CTSUART2DTR UART3CTSUSBN1 VbkenaUSBP1 UART5RXDCrtvsync VconrcsCrtsda FlmvsyncLphsync ADDR14 ADDR15ADDR13 ADDR12BUFDQM2 BUFDQM0BUFDQM3 BufsdclkADDR21 ADDR19ADDR23 DATA0PXAGP7 KeypadirqEvairq LAN1IRQPXAGP82 PXAGP81PXAGP83 PXAGP84Mbreq DMAREQ1DMAACK1 B50 Model Default stateMbgnt A50 3M6864A20 A18MMDAT0 MMDAT3ZV9 ZV8ZV5 ZV6ZV4 ZV32 COM System BusA50 VpclkUSB 1.1 client USB 1.1 Host5 T/S 7 SD/MMCCRT-out Zoom Video ZV port System Reset InterfaceBuzzer Control Interface Back-up power input Power-inputSystem Management Bus SM Bus interface PCI I/F Thru