8 d e v i c e s...Carambola 2 details 1) Male UFL connector for external antenna 2) RF shield 8 d e...
Transcript of 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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8 d e v i c e s
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
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8devicesCarambola2isamemberofCarambolawire-lessmodulesfamilyandisbasedonQualcomm/AtherosAR9331SoC.
Carambola2isasurfacemountable,singlesided,Wi-FienabledLinuxmodule,featuringthelowestpowercon-sumptionintheindustry.
ModulecomesbundledwithanopensourcedevelopmentboardforaquickstartofyournewInternetofThingseraproject.
8devicesisprovidingOpenWRTlinuxdistributionsourcecodewithnecessarypatchesonGitHubhttps://github.com/8devicesandissupportedbyourgrowingcommunityonhttp://www.8devices.com/communityforum.
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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
22 GND - Groundconnection
23 UARTRTS(i2SMCK,JS,GPIO11) O UARTreadytosendsignal(Masterclock,disablesJumpstartandWPSinputfunctiononGPIO11)
24 UARTCTS(i2SMCIN,GPIO12)BootstrapL I UARTcleartosendsignal(Datainput)
25 GND - Groundconnection
26 Antenna I/O Externalantennaconnection
27 GND - Groundconnection
28 GND - Groundconnection
29 GND - Groundconnection
30 GND - Groundconnection
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Pin Name IO Description
31 GND - Groundconnection
32 GND - Groundconnection
33 Hardwarereset I Hardwarereset
34 GND - Groundconnection
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
42 GND - Groundconnection
43 UARTRX(SPICS1,GPIO9) I(O,I/O) Serialdatain(SPIchipselect)
44 UARTTX(SPICS2,GPIO10) O(O,I/O) Serialdataout(SPIchipselect)
45 GND - Groundconnection
46 GND - Groundconnection
47 GND - Groundconnection
48 GND - Groundconnection
49 GND - Groundconnection
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
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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.
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PCB footprint
Soldering paste footprint
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Carambola 2Wi-Fi 4 things
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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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8 d e v i c e s
Carambola 2 details
1)MaleUFLconnectorforexternalantenna
2)RFshield
8 d e v i c e s
Carambola 2Wi-Fi 4 things
8deviCes www.8devices.com
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 ©