8 d e v i c e s...carambola 2 details 1) male ufl connector for external antenna 2) rf shield 8 d e...

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Carambola 2

Quick specs

• 802.11b/g/n,2.4GHz,1x1SISO,150MBpsmaxdata

rate,21dBoutputpower

• U.FLconnectororexternalpinforexternalantenna

• 16MBFLASH,64MBDDR2RAM

• Linuxfriendly,OpenWRTflashimageandsource

codeareavailablefordownloadonwww.8devices.

com/wiki_carambola

• CPU–AR9331,400MHzclockspeed

• 28by38mmSize–smallandeasytoembed

• Surfacemountable

• Powersupply-3.3V,powerconsumption0.5W

• Availableinterfaces-USBhost/slave,se-

rialport,2xEthernet,i2S,SLIC,SPDIF,23xGPIO

Wi-Fi 4 things

8deviCes www.8devices.com

8devicesCarambola2isamemberofCarambolawire-lessmodulesfamilyandisbasedonQualcomm/AtherosAR9331SoC.

Carambola2isasurfacemountable,singlesided,Wi-FienabledLinuxmodule,featuringthelowestpowercon-sumptionintheindustry.

ModulecomesbundledwithanopensourcedevelopmentboardforaquickstartofyournewInternetofThingseraproject.

8devicesisprovidingOpenWRTlinuxdistributionsourcecodewithnecessarypatchesonGitHubhttps://github.com/8devicesandissupportedbyourgrowingcommunityonhttp://www.8devices.com/communityforum.

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Carambola 2Wi-Fi 4 things


Pinout information

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Pin Name I/O Description

1 SPDIFOUT(GPIO23) O(I/O) Speakeroutput

2 i2SMICIN(SLICDATAIN,GPIO22) I(I/O) Datainput(DatatransmittedfromSLICtoCa-rambola2)

3 i2SMCK(SLICDATAOUT,GPIO21) O(I/O) Masterclock(DatatransmittedfromCaram-bola2toSLIC)

4 i2SSD(SLICFSIN,GPIO20) I(I/O) Serialdatainput/output(Framesyncin)

5 i2SWS(SLICFSOUT,GPIO19) O(I/O) Wordselectforstereo(Framesyncout)

6 i2SCK(SLICCLK,GPIO18) O(I/O) Stereoclock(SLICclock)

7 GND - Groundconnection

8 ETH1RXP IA LANport1,positiveRXconnection

9 ETH1RXM IA LANport1,negativeRXconnection

10 ETH1TXP OA LANport1,positiveTXconnection

11 ETH1TXM OA LANport1,negativeTXconnection

12 ETH0RXP IA LANport0,positiveRXconnection

13 ETH0RXM IA LANport0,negativeRXconnection

14 ETH0TXP OA LANport0,positiveTXconnection

15 ETH0TXM OA LANport0,negativeTXconnection

16 SPIMOSI(GPIO4) O(I/O) DatatransmissionfromtheCarambola2toanexternaldevice.Onreset,SPI_MOSI(GPIO_4)isoutputandcandirectlyinterfacewithaSPIdevicesuchasaserialflash.Ifaserialflashisnotused,thesepinsmaybeusedasGPIOpins.

17 SPICLK(GPIO3) O(I/O) SPIserialinterfaceclock

18 SPIMISO(GPIO5) IL(I/O) DatatransmissionfromanexternaldevicetotheCarambola2.Onreset,SPI_MISO(GPIO_5)isinput,whichshouldbeinterfacedwithanSPIdeviceviaaresistordividerforreliability.Ifaserialflashisnotused,thesepinsmaybeusedasGPIOpins.

19 SPICS0(GPIO2) O(I/O) SPIchipselect

20 USB+ IA/OA PositiveUSBconnection

21 USB- IA/OA NegativeUSBconnection


23 UARTRTS(i2SMCK,JS,GPIO11) O UARTreadytosendsignal(Masterclock,disablesJumpstartandWPSinputfunctiononGPIO11)

24 UARTCTS(i2SMCIN,GPIO12)BootstrapL I UARTcleartosendsignal(Datainput)


26 Antenna I/O Externalantennaconnection







Pin Name IO Description



33 Hardwarereset I Hardwarereset


35 LED6(GPIO17)BootstrapH O(I/O) EthernetswitchLED5,Bootstrappinhigh

36 LED5(GPIO16)BootstrapL O(I/O) EthernetswitchLED4,Bootstrappinlow

37 LED4(GPIO15)BootstrapL O(I/O) EthernetswitchLED3,Bootstrappinlow

38 LED3(ETH1,GPIO14)BootstrapL O(I/O) EthernetswitchLED2,Bootstrappinlow

39 LED2(ETH0,GPIO13)BootstrapH O(I/O) EthernetswitchLED1,Bootstrappinhigh

40 LED1(GPIO1)BootstrapH O(I/O) WLANLED2,Bootstrappinhigh

41 LED0(WLANLED,GPIO0)BootstrapH O(I/O) WLANLED1,Bootstrappinhigh


43 UARTRX(SPICS1,GPIO9) I(O,I/O) Serialdatain(SPIchipselect)

44 UARTTX(SPICS2,GPIO10) O(O,I/O) Serialdataout(SPIchipselect)






50 3.3Vinput(+3VD) - Input+3.3V

51 3.3Vinput(+3VD) - Input+3.3V

General GPIO characteristics

Parameter Units Min Max

Outputhighvoltage V 2.44 2.8

Outputlowvoltage V -0 0.1

Inputhighvoltage V 1.93 3.0

Inputlowvoltage V -0.3 0.75

Currentdriveupto24mA.

GPIO

Bootstrap HIGH or LOWmeansthatduringbootstrapprocess(firstfewsecondswhenthedeviceisturnedon)thesepinsneedtobeinthespecifiedstate.Ifpinsarenotinrequiredstatethendevicewillnotbootcorrectly.

IA-analoginputsignalI-digitalinputsignalI/O-digitalbidirectionaldignalIL-inputsignalswithweakinternalpull-up,topreventsignalsfromfloatingwhenopenOA-analogoutputsignal

O-digitaloutputsignal



Parameter Units Min Recommended Max

DCsupplyvoltage V 2.97 3.3 3.63

Current A 0.09 0.110 0.450

Networktransformervoltage V 1.9 2.0 2.15

Power ratings

Fortheoptimalperformanceandstabilityrecommendedpowerratingsmustbeused.Devicemightmalfunctionoutsideminimumandmaximumpowerratings.

GPIO

LED GPIO LED0 (GPIO0), LED2 (GPIO13) and LED3 (GPIO14)arebeingusedbykernelmodule“leds_gpio”-Youcanusethemafterremovingleds_gpiomodulebyrmmod,orremovingitpermanentlyfrom/etc/modules.d

Free GPIO pins:Ifyouhavesomehobyproject,itisadvisedtouseGPIOpins18,19,20,21,22and23withoutanyworries.Thesepinsarenotusedduringthebootingprocess.OtherGPIOpinsshouldnotbeusedifyoudon’tknowexactlywhatyouwanttoachieve,becausetheyareusedduringthebootprocess(bootstrap).

Power supply

Allthe3.3VandGNDpinsareinterconnectedontheCarambola2module.Itisrecommendedtousemorethanoneofthesepinstogivepowersupplytothemodule.Pin50andpin51areenoughtforfeedingthesupplyvoltage.Use100nFceramiccapacitorsfordecoupling.

Software

8devicesisprovidingOpenWRTlinuxdistributionsourcecodewithnecessarypatchesonGitHubhttps://github.com/8devicesandissupportedbyourgrowingcommunityonhttp://www.8devices.com/communityforum.

Parameter Units Min Max

Workingtemperature C 0 65

Storagetemperature C -40 70

Humidity %RH 10 90

Storagehumidity %RH 5 90

Operating conditions

Themodulecanoperateinawidetemperaturerangeanddifferentconditionsdependingontheenclosure.Thefollowingguidelinesguaranteethatitwillworkcorrectly.

PCB footprint

Soldering paste footprint

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Reflow profile recommendation

Rampuprate 3°C/secondmax

Maximumtimemaintainedabove217°C 120seconds

Peaktemperature 250°C

Maximumtimewithin5°Cofpeaktemperature 20seconds

Rampdownrate 6°C/secondmax

Output

power

(dBm

)

802.11N20MHz

7.2Mbps 14.4Mbps 21.7Mbps 28.9Mbps 43.3Mbps 57.8Mbps 65Mbps 72.2Mbps

21 20 20 19 18 17 16 15

802.11N40MHz

15Mbps 30Mbps 45Mbps 60Mbps 90Mbps 120Mbps 135Mbps 150Mbps

20 19 19 19 18 17 16 15

Receive

sensitivity

(dBm

)

802.11N(20MHz)

7.2Mbps 14.4Mbps 21.7Mbps 28.9Mbps 43.3Mbps 57.8Mbps 65Mbps 72.2Mbps

-94 -91 -88 -85 -82 -79 -76 -73

802.11N(40MHz)

15Mbps 30Mbps 45Mbps 60Mbps 90Mbps 120Mbps 135Mbps 150Mbps

-89 -86 -83 -80 -78 -75 -72 -69

Radio characteristics

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Carambola 2 details

1)MaleUFLconnectorforexternalantenna

2)RFshield

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E1-Integrated2.4GHzchipan-tennaJ12, J13 -2x102.54mmpitchpro-totypingareaholesJ3-ETH0LANportJ4-ETH1LANportJ8-TypeAUSBsocketJ14-Mini-AUSBsocket(console+power5V)S1-HardwareresetbuttonS2-GPIOprogramablebutton

Carambola 2 development board

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Formoreinformation,pleasecontactusat:[email protected]:www.8devices.comUAB"8devices"Gediminost.47,Kaunas,LT-44242,Lithuania 8deviCes ©

8 d e v i c e s...carambola 2 details 1) male ufl connector for external antenna 2) rf shield 8 d e...

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