Freescale Semiconductor TWR-WIFI-RS2101 User manual

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FreescaleSemiconductorInc.
TWR‐WIFI‐RS2101
User’sManual
Rev.1.0
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Contents
1Overview......................................................................................................................................................3
2ReferenceDocuments..............................................................................................................................4
3HardwareFeatures...................................................................................................................................4
3.1RS9110‐N‐11‐21Module.................................................................................................................................................4
3.2SystemPower.......................................................................................................................................................................5
3.3AccessHeader......................................................................................................................................................................5
3.4ElevatorConnections........................................................................................................................................................5
3.5MechanicalFormFactor...................................................................................Error!Bookmarknotdefined.
4JumperTable..............................................................................................................................................8
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RevisionHistory
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Revision DateChanges
1.0July2010InitialRelease
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TWR‐WIFI‐RS2101User’sManualPage3of9
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1Overview
TheRedpineWi‐FiTowerModule(TWR‐WIFI‐RS2101)isalow‐costevaluation,demonstrationand
developmentboardthatfeaturesan802.11nsolutionfromRedpineSignals.Thefollowinglist
summarizesthefeaturesoftheTWR‐WIFI‐RS2101:
•RS9110‐N‐11‐21Wi‐Fimodule
oCompliantto802.11b/gandsinglestream802.11n
oSupportsallWi‐Ficlientsecurityprotocols(WEP,WPA,andWPA2)
oReferenceDesigncertifiedforFCC/IC/CE
oRoHScompliant
oDoesnotrequireanyWLANdriveronthehostprocessor
oHostinterfacethroughSPI
oTerminatesSLIPconnectionsandofferstransparentserialmodemfunctionality
oIntegratedantenna,frequencyreference,andlow‐frequencyclock
oUltralowpoweroperationwithpowersavemodes
oSinglesupply3.1to3.6Voperation
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AblockdiagramfortheTWR‐WIFI‐RS2101isshowninthefigurebelow.
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Redpine Signals
RS9110-N-11-21-01 Module
(with on-board Antenna)
Primary Elevator Connector
SPI0
IRQ
GPIO1
Power
Gate
POWER_EN
RSTOUT_B
Jumper
RESET
10-pin Header
3.3V
SPI, IRQ
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Figure1. TWR‐WIFI‐RS2101BlockDiagram

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2ReferenceDocuments
ThedocumentslistedbelowshouldbereferencedformoreinformationontheFreescaleTower
systemandtheTWR‐WIFI‐RS2101.Refertohttp://www.freesale.com/towerforthelatestrevisionof
allTowerdocumentation.
•TWR‐WIFI‐RS2101UserManual
•TWR‐WIFI‐RS2101QuickStartGuide
•TWR‐WIFI‐RS2101LabTutorial
•RS9110‐N‐11‐21ProductBrief
•RS9110‐N‐11‐21Wi‐FiModuleAbridgedDatasheet
3HardwareFeatures
ThissectionprovidesmoredetailsaboutthefeaturesandfunctionalityoftheTWR‐WIFI‐RS2101.
3.1 RS9110N1121Module
TheRS9110‐N‐11‐21modulefromRedpine'sConnect‐io‐n™familyofproductsisacompleteIEEE
802.11bgnWi‐FiclientdevicewithastandardserialorSPIinterfacetoahostprocessorordatasource.
ItintegratesaMAC,Basebandprocessor,RFtransceiverwithpoweramplifier,afrequencyreference,
anantenna,andallWLANprotocolandconfigurationfunctionalityinembeddedfirmwaretoprovidea
self‐contained802.11nWLANsolutionforavarietyofapplications.NoWLANdriverfunctionalityis
requiredonthehostprocessor.BasedontheRedpineSignalsRS9110SoCwhichincludesanembedded
processor,itisdesignedtoprovidestandardscompliantwirelessconnectivitytodevicesandsystems
thathaveaserialportandimplementaTCP/IPstack.Asawirelessserialmodem,theRS9110‐N‐11‐21
handlesSLIPpacketsandacceptsATcommandsforconfiguration, enablingavarietyofM2M
applicationsatlowcostandsmallfootprint.Ituniquelyprovidesconnectivityinthesinglestream
802.11nmode,preservingoverallnetworkthroughputintheemergingenterpriseenvironments.
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FortheTWR‐WIFI‐RS2101TowerPeripheralModule,theRS9110‐N‐11‐21modulecommunicateswith
theMCUthroughanSPI.
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Figure2showsafunctionalblockdiagramoftheRS9110‐N‐11‐21module.RefertotheRS9110‐N‐11‐
21Wi‐FiModuleAbridgedDatasheetformoreinformation.
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RS9110-N-11-21-01
RS9110 WLAN Subsystem
RS9110 RF
Transceiver
Flash
XO
3.3V
Supply
RF
FE
Reset LED
Reset
BT Coexistence I/f
Test Port
Freescale MCU
Applications
MQX OS/TCP IP
SLIP
SLIP
WLAN Stack
SPI/UART
Selection
GPIO
SPI
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Figure2. RS9110‐N‐11‐21Module:FunctionalBlockDiagram
3.2 SystemPower
TheRS9110‐N‐11‐21ispoweredfromasourceinanassembledTowerSystemviathe3.3Vsupplyon
thePrimaryElevatorConnector.
3.3 AccessHeader
TheSPIandinterruptsignalsareroutedtoboththePrimaryElevatorconnectoranda2x5pinheader.
ThisAccessHeadercanbeusedtoaccesstheRS9110‐N‐11‐21modulesignalsforprobingorforuse
outsideoftheTowerSystem.ThepinoutisshowninTable1.
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Table1. AccessHeaderConnections
RS9110‐N‐11‐21
SignalPin
RS9110‐N‐11‐21
Signal
3.3V 12GND
SPI_CLK 34SPI_INTR
NoConnect 56NoConnect
SPI_DATAOUT 78SPI_CS
SPI_DATAIN 910GND
3.4 ElevatorConnections
TheTWR‐WIFI‐RS2101featurestwoexpansioncard‐edgeconnectorsthatinterfacetoElevatorboards
inaTowersystem:thePrimaryandSecondaryElevatorconnectors.ThePrimaryElevatorconnector,
comprisedofsidesAandB,isutilizedbytheTWR‐WIFI‐RS2101,whiletheSecondaryElevator
connectoronlymakesconnectionstoground(GND).Table2providesthepinoutforthePrimary

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ElevatorConnector.An“X”inthe“Used”columnindicatesthatthereisaconnectionfromtheTWR‐
WIFI‐RS2101tothatpinontheElevatorconnector.An“X”inthe“Jmp”columnindicatesthata
jumperisavailablethatcanconfigureorisolatetheconnectionfromtheElevatorconnector.
Table2. TWR‐WIFI‐RS2101PrimaryElevatorConnectorPinout
TWR‐WIFI‐RS2101PrimaryConnector
SideB SideA
Pin
#NameUsageUsedJmp
Pin
#NameUsageUsedJmp
B15V    A15V 
B2GNDGroundA2GNDGround
B33.3V3.3VPower A33.3V3.3VPower
B4ELE_PS_SENSE A43.3V3.3VPower
B5GNDGroundA5GNDGround
B6GNDGroundA6GNDGround
B7SPI1_CLK/SDHC1_CLK   A7SCL0  
B8SPI1_CS1/SDHC1_CS1   A8SDA0  
B9SPI1_CS0/SDHC1_CS0   A9GPIO9/CTS1POWER_EN
B10SPI1_MOSI/SDHC1_CMD   A10GPIO8/SDHC_D2  
B11SPI1_MISO/SDHC1_D0   A11GPIO7/SD_WP_DET  
MechanicalKey
B12ETH_COL   A12ETH_CRS  
B13ETH_RXER   A13ETH_MDC  
B14ETH_TXCLK   A14ETH_MDIO  
B15ETH_TXEN   A15ETH_RXCLK  
B16ETH_TXER   A16ETH_RXDV  
B17ETH_TXD3   A17ETH_RXD3  
B18ETH_TXD2   A18ETH_RXD2  
B19ETH_TXD1   A19ETH_RXD1  
B20ETH_TXD0   A20ETH_RXD0  
B21GPIO1GPIO_RSTXA21SSI_MCLK  
B22GPIO2  A22SSI_BCLK  
B23GPIO3  A23SSI_FS  
B24CLKIN0  A24SSI_RXD  
B25CLKOUT1  A25SSI_TXD  
B26GNDGroundA26GNDGround
B27AN7  A27AN3 
B28AN6  A28AN2 
B29AN5  A29AN1 
B30AN4  A30AN0 
B31GNDGroundA31GNDGround
B32DAC1  A32DAC0 
B33TMR3  A33TMR1 
B34TMR2  A34TMR0 
B35GPIO4  A35GPIO6 
B363.3V3.3VPower A363.3V3.3VPower

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B37PWM7   A37PWM3  
B38PWM6   A38PWM2  
B39PWM5   A39PWM1  
B40PWM4   A40PWM0  
B41CANRX   A41RXD0RS_UART_OUT 
B42CANTX   A42TXD0RS_UART_IN 
B431WIRE   A43RXD1  
B44SPI0_MISOSPI_DATAOUTX A44TXD1  
B45SPI0_MOSISPI_DATAINX A45GPIO  
B46SPI0_CS0SPI_CSXA46GPIO  
B47SPI0_CS1 A47GPIO  
B48SPI0_CLKSPI_CLKX A48GPIO  
B49GNDGroundA49GNDGround
B50SCL1   A50GPIO  
B51SDA1   A51GPIO  
B52GPIO5   A52GPIO  
B53USB_DP_PDOWN   A53GPIO  
B54USB_DM_PDOWN   A54USB_DM  
B55IRQ_H   A55USB_DP  
B56IRQ_G A56USB_ID  
B57IRQ_F   A57USB_VBUS  
B58IRQ_E A58TMR7  
B59IRQ_D A59TMR6  
B60IRQ_C A60TMR5  
B61IRQ_B A61TMR4  
B62IRQ_ASPI_INTRA62RSTIN_b  
B63FB_ALE/FB_CS1_b A63RSTOUT_bRSTOUT_RST(RESET_n)
B64FB_CS0_b A64CLKOUT0 
B65GNDGroundA65GNDGround
B66FB_AD15 A66FB_AD14 
B67FB_AD16 A67FB_AD13 
B68FB_AD17 A68FB_AD12 
B69FB_AD18 A69FB_AD11 
B70FB_AD19 A70FB_AD10 
B71FB_R/W_b A71FB_AD9 
B72FB_OE_b A72FB_AD8 
B73FB_D7 A73FB_AD7 
B74FB_D6 A74FB_AD6 
B75FB_D5 A75FB_AD5 
B76FB_D4 A76FB_AD4 
B77FB_D3 A77FB_AD3 
B78FB_D2 A78FB_AD2 
B79FB_D1 A79FB_AD1 
B80FB_D0 A80FB_AD0 
B81GNDGroundA81GNDGround
B823.3V3.3VPower A823.3V3.3VPower

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4JumperTable
Thereareseveraljumpersprovidedforisolation,configuration,andfeatureselection.Refertothe
followingtablefordetails.Thedefaultinstalledjumpersettingsareshowninbold.
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Table3. TWR‐WIFI‐RS2101JumperTable
JumperOptionSettingDescription
J3ResetSelection
1‐2ConnectTowerRSTOUT_B(A63)toRS9110‐N‐11‐
21/RESET_n
2‐3ConnectTowerGPIO1(B21)toRS9110‐N‐11‐
21/RESET_n
J5ConnectPOWER_ENONPowertoRS9110‐N‐11‐21modulecontrolledby
POWER_ENsignal
OFFPowertoRS9110‐N‐11‐21isswitchedoff
J15SPI/UARTInterfaceSelect
ONRS9110‐N‐11‐21/SPIInterfaceSelectedfor
communicationwithHostMCU
OFF
RS9110‐N‐11‐21/UARTInterfaceSelectedfor
communicationwithHostMCU–thisisnotavailableas
astandardfeatureoftheTWR‐WIFI‐RS2101
J10ConnectPowerGateoutput
ONConnecttheoutputofthePowerGatetothe3.3V
supplyforRS9110‐N‐11‐21module
OFFDisconnecttheoutputofthePowerGatetothe3.3V
supplyforRS9110‐N‐11‐21module

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