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    WiFi设计芯片RS9110-N-11-28_datesheet

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    RS-9110-N-11-28 Self Contained 802.11 a/b/g/n Module with Networking Stack Datasheet Version 1.9 November 2012 Redpine Signals, Inc. 2107 N. First Street, #680 San Jose, CA 95131. Tel: (408) 748-3385 Fax: (408) 705-2019 Email: info@redpinesignals.com Website: www.redpinesignals.com Redpine Signals, Inc. RS-9110-N-11-28 Self Contained 802.11 a/b/g/n Module with Networking Stack Datasheet Version 1.9 The RS9110-N-11-28 module from Connect-io-nTM family of products is a complete dual band (2.4/5GHz) IEEE 802.11abgn based wireless device server that directly provides a wireless interface to any equipment with a serial or SPI interface for data transfer. It integrates a MAC, Baseband processor, dual band RF transceiver with power amplifier and diplexer; and all WLAN protocol and configuration functionality, networking stack in embedded firmware to make a dual band 802.11n WLAN solution for a variety of applications. As a wireless serial modem, the RS9110-N11-28 originates and terminates TCP and UDP connections, enabling a variety of M2M applications at low cost and small footprint. Applications:  Seamless Wi-Fi connectivity for any equipment with a serial or SPI interface  Industrial M2M communications  Point of Sale Terminals  Metering  Security Cameras & Surveillance Equipment  Warehousing  Digital Picture Frames  Logistics and Freight Management  Several Medical Applications including Patient Monitoring, Remote Diagnostics etc. Device Features:  802.11a/b/g/n (single stream) module  2.4/5 GHz, 802.11n RF transceiver with power amplifier  Supports WPA2-PSK, WEP (64 and 128 bits) and TKIP modes of security in infrastructure mode  Supports WEP (64 and 128 bits) modes of security in ad-hoc mode  Host interface through UART and SPI  Iintegrated TCP/IP stack with option to bypass the stack in SPI mode  Ultra low power operation with power save modes  Ad-hoc and infrastructure modes for maximum deployment flexibility  Configure module wirelessly and upgrade firmware wirelessly for easy field deployment  Single supply 3.1 to 3.6 V operation  Pad for external antenna connection  Device Dimensions 20 mm x 17.5 mm x 3.5mm RS9110-N-11-28 System Block Diagram Re se t 3.3V Re fe re nce Fre que ncy UART/SPI Select T/R Sw itch Diple xe r Diple xe r 5 GHz 2.4 GHz Balun Balun 5G 2.4G RF Tra nsce ive r + PA RS9110 (TCP, UDP, WLAN Stack) UART SPI Inte rrupt RS9110-N-11-28 Flash Host Processor Appli ca t i ons Redpine Signals, Inc. Page 2 RS-9110-N-11-28 Self Contained 802.11 a/b/g/n Module with Networking Stack Datasheet Version 1.9 Table of Contents RS-9110-N-11-28 Self Contained 802.11 a/b/g/n Module with Networking Stack ..................................................................... 1 1: Detailed Feature List ............................................................ 7 1.1: Host Interfaces ........................................................................ 7 1.2: WLAN ....................................................................................... 7 1.2.1: MAC .............................................................................................. 7 1.2.2: Baseband Processing .................................................................... 7 1.2.3: RF ................................................................................................. 7 1.3: Networking Protocols .............................................................. 8 1.4: Configuration ........................................................................... 8 1.5: Software .................................................................................. 8 2: Package Description ............................................................. 9 2.1: Top View .................................................................................. 9 2.2: Bottom View ............................................................................ 9 2.3: Package Dimensions ................................................................ 9 2.4: PCB Landing Pattern .............................................................. 11 2.5: Recommended Reflow Profile ................................................ 12 2.6: Baking Instructions ............................................................... 12 3: Pin Description ................................................................... 13 3.1: Module Pinout ........................................................................ 13 3.2: Pin Description....................................................................... 13 4: Electrical Characteristics .................................................... 17 4.1: Absolute Maximum Ratings.................................................... 17 4.2: Recommended Operating Conditions ..................................... 17 4.3: DC Characteristics – Digital I/O Signals................................. 17 4.4: AC Characteristics .................................................................. 18 4.4.1: SPI Interface .............................................................................. 18 4.4.2: Reset Sequence and Timing ........................................................ 19 5: Performance Specifications ................................................ 20 5.1: Wireless Specifications .......................................................... 20 5.2: Receive Characteristics .......................................................... 20 5.2.1: Sensitivity................................................................................... 20 5.3: Throughput ............................................................................ 21 5.4: Standards Compliance ........................................................... 21 6: Software Architecture ........................................................ 22 6.1: Host ....................................................................................... 23 6.1.1: UART .......................................................................................... 23 6.1.2: SPI ............................................................................................. 23 6.1.3: Thin SPI Driver ........................................................................... 23 6.2: RS9110-N-11-28 .................................................................... 23 6.2.1: SPI ............................................................................................. 23 6.2.2: UART .......................................................................................... 23 6.2.3: Host Abstraction Layer (HAL) ..................................................... 23 6.2.4: Wireless Control Block (WCB)..................................................... 24 Redpine Signals, Inc. Page 3 RS-9110-N-11-28 Self Contained 802.11 a/b/g/n Module with Networking Stack Datasheet Version 1.9 6.2.4.1: TCP/IP Control frames.......................................................... 24 6.2.5: Station Management Entity (SME) .............................................. 24 6.2.6: WPA Supplicant .......................................................................... 24 6.2.7: Power Save Modes ...................................................................... 24 6.2.7.1: Power mode 0 ....................................................................... 24 6.2.7.2: Power mode 1 ....................................................................... 24 6.2.7.3: Power mode 2 ....................................................................... 25 7: Ordering Information ......................................................... 26 8: Command Reference (AT commands and SPI commands).. 27 Redpine Signals, Inc. Page 4 RS-9110-N-11-28 Self Contained 802.11 a/b/g/n Module with Networking Stack Datasheet Version 1.9 Table of Figures Figure 1: Top View of the Module ................................................................. 9 Figure 2: Bottom View of the Module ........................................................... 9 Figure 3: Package Dimensions ................................................................... 10 Figure 4: PCB Landing Pattern.................................................................... 11 Figure 5: Reflow Profile.............................................................................. 12 Figure 6: Pinout of the Module ................................................................... 13 Figure 7: Interface Timings – SPI Interface ............................................... 18 Figure 8: Reset Pin Timing Diagram ........................................................... 19 Figure 9: RS9110-N-11-28 Software Architecture Block Diagram .............. 22 Redpine Signals, Inc. Page 5 RS-9110-N-11-28 Self Contained 802.11 a/b/g/n Module with Networking Stack Datasheet Version 1.9 List of Tables Table 1: Absolute Maximum Ratings .......................................................... 17 Table 2: Recommended Operating Conditions ............................................ 17 Table 3: Input/Output DC Characteristics .................................................. 18 Table 4: AC Characteristics – SPI Interface ................................................ 18 Table 5: Wireless Specification................................................................... 20 Table 6: Receive Sensitivity........................................................................ 20 Table 7: Device Ordering Information ........................................................ 26 Redpine Signals, Inc. Page 6 RS-9110-N-11-28 Self Contained 802.11 a/b/g/n Module with Networking Stack Datasheet Version 1.9 1: Detailed Feature List 1.1: Host Interfaces  UART  The UART forms the physical layer of the TCP/IP stack, transferring frames between a Host processor and the module.  The UART interface supports variable baud rates from 9600 to 3686400 bps  AT Command Interface for configuring and operating the module  SPI  Standard 4-wire SPI  Operation up to a maximum clock speed of 25MHz The module can be configured in UART or SPI mode by configuring the pin MODE_SEL_1 as described in the section for Pin Description. 1.2: WLAN 1.2.1: MAC  Conforms to IEEE 802.11a/b/g/n standards for MAC  Dynamic selection of fragment threshold and data rate depending on the channel statistics  Hardware accelerators for AES  WPA, WPA2, WEP support  Infrastructure and Ad-hoc modes 1.2.2: Baseband Processing  Supports DSSS (1, 2 Mbps) and CCK (5.5, 11 Mbps) modes  Supports all OFDM data rates (6, 9, 12, 18, 24, 36, 48, and 54 Mbps)  Supports IEEE 802.11n single-stream modes with data rates up to 65 Mbps  Supports long, short, and HT preamble modes  High-performance multipath compensation in OFDM, DSSS, and CCK modes 1.2.3: RF  Highly integrated 2.4 GHz/5 GHz transceiver with direct conversion architecture Redpine Signals, Inc. Page 7 RS-9110-N-11-28 Self Contained 802.11 a/b/g/n Module with Networking Stack Datasheet Version 1.9  Receiver with 34 dB RF selectable gain range and 60 dB baseband variable gain range  Power amplifier with 17 dBm output power for Low Band OFDM and 15 dBm for High Band OFDM.  Integrated LNA, LPF, Power Amplifier and etc. 1.3: Networking Protocols  TCP  UDP  ARP  ICMP  DHCP  The RS9110-N-11-28 comes with flexible frameworks to enable usage in various application scenarios, viz., high throughput, more network features etc. Please contact Redpine Signals for addition of network features like HTTP server. 1.4: Configuration The RS9110-N-11-28 module can be configured through UART or SPI. The following are some of the commands that can be given to the module:  Scan  Connect  Pre-shared Keys  SSID of hidden WLAN networks  DHCP Enable/Disable  Create/Join an IBSS network  Open/Close sockets for TCP, UDP, Listening TCP 1.5: Software  Sample Host driver for SPI  Configuration and management GUI for Windows XP for UART  Embedded software for complete WLAN functionality including 802.11n aggregation and Block-ACK, auto rate adaptation, security and also complete network stack and applications including TCP, UDP, ARP, DHCP, HTTP.  The module can be made to come up as an Access point, to which a standard WLAN device such as a laptop can connect and configure the module or upgrade the firmware Redpine Signals, Inc. Page 8 RS-9110-N-11-28 Self Contained 802.11 a/b/g/n Module with Networking Stack Datasheet Version 1.9 2: Package Description 2.1: Top View Figure 1: Top View of the Module 2.2: Bottom View Figure 2: Bottom View of the Module 2.3: Package Dimensions Redpine Signals, Inc. Page 9 RS-9110-N-11-28 Self Contained 802.11 a/b/g/n Module with Networking Stack Datasheet Version 1.9 Figure 3: Package Dimensions Module height = 3.5 mm Redpine Signals, Inc. Page 10 RS-9110-N-11-28 Self Contained 802.11 a/b/g/n Module with Networking Stack Datasheet Version 1.9 2.4: PCB Landing Pattern Figure 4: PCB Landing Pattern Redpine Signals, Inc. Page 11 RS-9110-N-11-28 Self Contained 802.11 a/b/g/n Module with Networking Stack Datasheet Version 1.9 2.5: Recommended Reflow Profile Figure 5: Reflow Profile Note: The profile shown is based on SAC 305 solder (3% silver, 0.5% copper). We recommend the ALPHA OM-338 lead-free solder paste. This profile is provided mainly for guidance. The total dwell time depends on the thermal mass of the assembled board and the sensitivity of the components on it. 2.6: Baking Instructions The RS9110-N-11-28 package is moisture sensitive and devices must be handled appropriately. After the devices are removed from their vacuum sealed packs, they should be taken through reflow for board assembly within 168 hours at room conditions, or stored at under 10% relative humidity. If these conditions are not met, the devices must be baked before reflow. The recommended baking time is nine hours at 125 C. Redpine Signals, Inc. Page 12 RS-9110-N-11-28 Self Contained 802.11 a/b/g/n Module with Networking Stack Datasheet Version 1.9 3: Pin Description 3.1: Module Pinout GND 45 44 REF_CLK 43 RESET_N 42 LED_ON 41 NC VRF33 40 39 VRF33 38 VINLDOP123 NC 37 36 NC 35 NC NC 34 33 FBDC1P3 VOUTBCKDC1P3 32 31 NC GND 30 46 GND 47 VRF28 48 MODE_SEL_1 49 NC 50 NC 51 SLEEP_CLK_X1 52 GND 53 NC 54 NC 55 NC 56 SPI_MOSI 57 SPI_MISO 58 SPI_CLK RS9110-N-11-28 Pin Diagram GND 29 NC 28 GND 27 RF_OUT1 26 RF_OUT2 25 VINBCKDC 24 XTAL_EN 23 NC 22 NC 21 NC 20 NC 19 18 NC DVDD33 17 1 GND 2 INTR 3 SD3 4 SPI_CS 5 NC 6 NC 7 NC 8 UART_RX 9 UART_TX 10 JPD0 11 JPD2 12 JPD1 13 JNC 14 NC 15 NC 16 GND Figure 6: Pinout of the Module 3.2: Pin Description Pin No. 1 Pin Name GND Direction - 2 INTR Output Type Description Ground LVCMOS Interrupt to the host. Active high, 8mA level triggered. Asserted by the module when: Redpine Signals, Inc. Page 13 RS-9110-N-11-28 Self Contained 802.11 a/b/g/n Module with Networking Stack Datasheet Version 1.9 Pin No. Pin Name 3 SD3 4 SPI_CS 5 NC 6 NC 7 NC 8 UART_RX 9 UART_TX 10 JPD0 11 JPD2 12 JPD1 13 JNC 14 NC 15 NC 16 GND 17 DVDD33 18 NC 19 NC 20 NC 21 NC 22 NC 23 XTAL_EN Direction - Input Input Output Ground Power Output Type LVCMOS 8mA Description 1.The module has to transmit data to the host through SPI. 2.When the module wakes up from sleep mode No connect in SPI mode. In UART mode, connect pull-down (1K to 10K Ohms) Active low SPI Chip Select. In UART mode, connect pull-down (1K to 10K Ohms) No connect No connect No connect LVCMOS 4mA LVCMOS 8mA UART input. No connect in SPI mode. UART output. No connect in SPI mode. Connect pull down of 1K Ohms Connect pull down of 1K Ohms Connect pull down of 1K Ohms No connect No connect No connect Ground 3.3 Volts Input to the I/O Rail No connect No connect No connect No connect No connect LVCMOS This signal controls an external 4mA reference clock oscillator for power- save purposes. Redpine Signals, Inc. Page 14 RS-9110-N-11-28 Self Contained 802.11 a/b/g/n Module with Networking Stack Datasheet Version 1.9 Pin No. Pin Name 24 VINBCKDC 25 RF_OUT2 26 RF_OUT1 27 GND 28 NC 29 GND 30 GND 31 NC 32 VOUTBCKDC1P3 33 FBDC1P3 34 NC 35 NC 36 NC 37 NC 38 VINLDOP123 39 VRF33 40 VRF33 41 NC 42 LED_ON 43 RESET_n Direction Power RFIn/RFOut Rfin/Rfout Ground No-connect Ground Ground No-connect Power Power Power Power Power - Inout Input Type Description 1 – Enable 0 – Disable 3.3 Volts input to the Lite-Fi’s PMU Antenna-2 port. 50 ohms impedance. Antenna-1 Port. 50 ohms impedance Ground No connect Ground Ground No connect Internal DC-DC convertor output. A Schottky diode is to be placed on this line for protection. Feedback for the DC-DC Converter No connect No connect No connect No connect Input to the LDO’s. This has to be connected to FBDC1P3. 3.3 Volts input to the RF transceiver 3.3 Volts input to the RF transceiver No connect LVCMOS 4mA LVCMOS LED Control signal. Indicates activity on WLAN – the device pulls this line low when the module is activated. To be connected to the Cathode of an LED with a recommended series resistor of 820 ohms to VDD. This pin may also be used as a GPIO. Active low power on reset. Required to be low for at least 10 ms after Redpine Signals, Inc. Page 15 RS-9110-N-11-28 Self Contained 802.11 a/b/g/n Module with Networking Stack Datasheet Version 1.9 Pin No. Pin Name Direction Type Description power on. 44 REF_CLK Input Reference Clock source: 40 MHz. 45 GND Ground Ground 46 GND Ground Ground 47 VRF28 Power 2.8 Volts LDO OUTPUT 48 MODE_SEL_1 Input LVCMOS SPI Mode: Connect pull down (3.9K 2mA Ohms to 4.7KOhms) UART Mode: No connect 49 NC - No connect 50 NC - No connect 51 SLEEP_CLK_X1 Input Ground 52 GND Ground Ground 53 NC - No connect 54 NC - No connect 55 NC - No connect 56 SPI_MOSI Input LVCMOS SPI Data Input. Connect pull down 8mA (1K to 10K Ohm) 57 SPI_MISO Output LVCMOS SPI Data Output. No connect in UART 8mA mode. 58 SPI_CLK Input LVCMOS SPI interface clock input. Connect pull 8mA down (1K to 10K Ohm) Notes:  Please contact Redpine Signals for application notes or for customization of a solution. Redpine Signals, Inc. Page 16 RS-9110-N-11-28 Self Contained 802.11 a/b/g/n Module with Networking Stack Datasheet Version 1.9 4: Electrical Characteristics 4.1: Absolute Maximum Ratings Absolute maximum ratings in the table given below are the values beyond which the device could be damaged. Functional operation at these conditions or beyond these conditions is not guaranteed. Parameter Input Supply voltage Supply voltage for I/O Rail Supply Voltage for the RF RF Input Level Storage temperature PA Output Load Mismatch Electrostatic discharge tolerance (MM) Electrostatic discharge tolerance (CDM) Electrostatic discharge tolerance (HBM) Symbol Vin DVDD33 VRF33 RFIN Tstore ESDMM ESDCDM ESDHBM Value 3.6 3.6 3.6 10 -65 to 150 10:1 200 500 2000 Units V V V dBm C V V V Table 1: Absolute Maximum Ratings 4.2: Recommended Operating Conditions Parameter Input supply voltage Supply voltage for I/O Rail Supply voltage for the RF Ambient temperature Symbol Min. VIN 3.1 DVDD33 3.1 VRF33 3.1 Ta -40 Typ. 3.3 3.3 3.3 25 Max. 3.6 3.6 3.6 85 Units V V V C Table 2: Recommended Operating Conditions 4.3: DC Characteristics – Digital I/O Signals Parameter Input high voltage Input low voltage Output low voltage Output high voltage Min. 2 -0.3 2.4 Typ. - Max. 5.5 0.8 0.4 - Units V V V V Redpine Signals, Inc. Page 17 RS-9110-N-11-28 Self Contained 802.11 a/b/g/n Module with Networking Stack Datasheet Version 1.9 Parameter Min. Input leakage current (at 3.3V or 0V) - Tristate output leakage current (at 3.3V or 0V) Typ. - Max. 10 10 Units A A Table 3: Input/Output DC Characteristics 4.4: AC Characteristics 4.4.1: SPI Interface Parameter Symbol SPI_CLK Frequency Fspi SPI_CS to output valid Tcs SPI CS, setup time Tcst SPI_DATAIN (MOSI), setup Tsd time SPI_DATAIN (MOSI), hold time Thd SPI_DATAOUT (MISO), clock to Tod output delay Min. 0 3.5 2 1 1.5 4 Typ. - - Max. 25 7.5 9.25 Units MHz ns ns ns ns Table 4: AC Characteristics – SPI Interface SPI_CLK SPI_CS Tcst SPI_MOSI SPI_MISO Tsd Thd Tod SPI_CS Tcs SPI_MISO Figure 7: Interface Timings – SPI Interface Redpine Signals, Inc. Page 18 RS-9110-N-11-28 Self Contained 802.11 a/b/g/n Module with Networking Stack Datasheet Version 1.9 4.4.2: Reset Sequence and Timing Following diagram shows the timing requirement for Reset_n input in two scenarios. This timing is valid for both UART and SPI based modules. The crystal oscillator output should be stable before releasing reset. A. Power up B. Giving hard reset during module operation 3.3V input supply Reset_n 20msec 1msec A B Figure 8: Reset Pin Timing Diagram Redpine Signals, Inc. Page 19 RS-9110-N-11-28 Self Contained 802.11 a/b/g/n Module with Networking Stack Datasheet Version 1.9 5: Performance Specifications 5.1: Wireless Specifications Feature Description Frequency Band 2.400 – 2.500 GHz (Low band) 4.900 – 5.850 GHz (High Band) Frequency Reference 40 MHz Modulation OFDM with BPSK, QPSK, 16-QAM, and 64-QAM 802.11b with CCK and DSSS Supported Data Rates 802.11n: 6.5, 13, 19.5, 26, 39, 52, 58.5, 65 Mbps 802.11a/g: 6, 9, 12, 18, 24, 36, 48, 54 Mbps 802.11b: 1, 2, 5.5, 11 Mbps 802.11n Features MCS 0-7, STBC, RIFS, Greenfield Protection A-MPDU, A-MSDU Aggregation with Block-ack Typical Transmit Power (+/- 2 dBm) ‘bg’ Mode 17 dBm for 802.11b DSSS 17 dBm for 802.11b CCK 15 dBm for 802.11g/n OFDM Typical Transmit Power 12 dBm (+/- 2 dBm) ‘a’ Mode Table 5: Wireless Specification 5.2: Receive Characteristics 5.2.1: Sensitivity Data Rate (bg Mode) 1 Mbps 2 Mbps 11 Mbps 6 Mbps 54 Mbps 65 Mbps Typical Sensitivity (+/- 1.5 dBm) -94.0 dBm (< 8% PER) -89.0 dBm (< 8% PER) -86.0 dBm (< 8% PER) -89.0 dBm (<10% PER) -74.0 dBm (< 10% PER) -71.0 dBm (< 10% PER) Data Rate (a Mode) Typical Sensitivity (+/- 1.5 dBm) 6 Mbps -88.0 dBm (<10% PER) 54 Mbps -72.0 dBm (< 10% PER) 65 Mbps -69.0 dBm (< 10% PER) Table 6: Receive Sensitivity Redpine Signals, Inc. Page 20 RS-9110-N-11-28 Self Contained 802.11 a/b/g/n Module with Networking Stack Datasheet Version 1.9 5.3: Throughput Interface UART (measured at 115200 bauds per sec) SPI (TCP) Throughput Tx – 75 kbps Rx – 72 kbps Tx – 8 Mbps (TCP), 9 Mbps (UDP) Rx – 5 Mbps (TCP), 6 Mbps (UDP) The numbers are the actual application throughputs. For physical data rates, please refer to the table Wireless Specification. 5.4: Standards Compliance RS9110-N-11-28 is compliant with the requirements of IEEE 802.11b, 802.11g, 802.11a, 802.11j, and 802.11n that include the following:  Transmit Spectral Mask  Transmit Center Frequency Leakage  Transmit Center Frequency Tolerance  Symbol Clock Frequency Tolerance  Transmit Constellation error  Receiver Adjacent Channel Interference Rejection  Receiver Non-adjacent Channel Rejection  Receiver Minimum Input Level  Receiver Maximum Input Level Redpine Signals, Inc. Page 21 RS-9110-N-11-28 Self Contained 802.11 a/b/g/n Module with Networking Stack Datasheet Version 1.9 6: Software Architecture The following figure depicts the software architecture of the RS9110-N-11-28 module. HOST PROCESSOR (HOST) Application Interrupt Thin SPI Driver SPI UART Driver UART SPI UART Host Abstraction Layer SLIP Wireless Control Block Station Managment Entity TCP/IP WPA/WPA-2 802.11 a/b/g/n MAC RS9110-N-11-28 Figure 9: RS9110-N-11-28 Software Architecture Block Diagram As shown in the figure above, the RS9110-N-11-28 module is integrated with the Host using either UART or SPI interfaces. The transmission and reception of the data to/from the Host depends on the interface used to connect the module as briefed below. Redpine Signals, Inc. Page 22 RS-9110-N-11-28 Self Contained 802.11 a/b/g/n Module with Networking Stack Datasheet Version 1.9 UART mode: The Host transmits/receives raw data using UART interface when the RS9110N-11-28 module is configured for UART mode. The access to the TCP/IP stack in the Wi-Fi module through the UART is provided through AT commands. SPI mode: Host transmits/receives raw data using SPI interface when the RS9110-N-1128 module is configured for SPI mode. A thin driver on the Host takes care of interacting with the Wi-Fi module through the SPI Host interface. 6.1: Host The Host is any system that has applications being executed and either a UART or SPI interface. The Host configures the RS9110-N-11-28 module through AT commands. 6.1.1: UART The UART on the Host side provides an interface for the host to access the Wi-Fi module. UART is used to configure various parameters of the RS9110N-11-28 module and also to send and receive data over the network by accessing the TCP/IP stack in the RS9110-N-11-28 module. 6.1.2: SPI The SPI on the Host side provides an interface for the host to access the Wi-Fi module. SPI on the Host acts as the master. 6.1.3: Thin SPI Driver The SPI driver on the Host is a thin driver through which the applications interact with the Wi-Fi module. The SPI driver uses the SPI host controller driver on the Host to send/receive the data to/from the RS9110-N-11-28 module and also to configure the same over the SPI interface. 6.2: RS9110-N-11-28 The RS9110-N-11-28 module incorporates Wi-Fi, TCP/IP, HTTP, DHCP, ARP, etc., and OS functionality to act as a wireless device server. It handles all the network connectivity functions. The following sections describe the software components of the RS9110-N-11-28 module in brief. 6.2.1: SPI The SPI on the RS9110-N-11-28 acts the SPI slave. It is a standard 4-wire SPI and can support a maximum frequency of 25MHz. 6.2.2: UART The UART on the RS9110-N-11-28 module is the physical interface which transmits/receives the data from the Host. It supports variable baud rates from 9600 to 3686400 bps. AT commands are used to configure and operate the module through UART interface. 6.2.3: Host Abstraction Layer (HAL) The HAL abstracts the lower layers in the host interface with which the RS9110-N-11-28 module is connected. The HAL interacts with the Wireless Redpine Signals, Inc. Page 23 RS-9110-N-11-28 Self Contained 802.11 a/b/g/n Module with Networking Stack Datasheet Version 1.9 Control Block layer for the processing of the frames obtained from or destined to the Host. 6.2.4: Wireless Control Block (WCB) The data from/to the Host is classified as Wi-Fi specific frames and TCP/IP specific frames. The WCB layer processes the frame obtained and acts accordingly. The functionality of the WCB module depends on the type of the frame and the direction of the frame (in case of TCP/IP) as described below. 6.2.4.1: TCP/IP Control frames If the frames from the host are interpreted as TCP/IP specific frames then the WCB interacts with the TCP/IP stack. 6.2.5: Station Management Entity (SME) The SME is the core layer which manages the Wi-Fi connectivity. The SME maintains the state machine to detect the activity on the Wi-Fi network and indicates to the user accordingly. It also performs re-association to the configured access point in Infrastructure mode. It interacts with the WPA supplicant if Security is enabled in the Wi-Fi network. 6.2.6: WPA Supplicant The WPA supplicant is used to initiate the 802.1x/EAccess Point authentication if WPA/WPA2-PSK is used as the security parameter. It also plays a major part in performing the 4-way handshake to derive the PTK in WPA/WPA2-PSK modes. 6.2.7: Power Save Modes The RS9110-N-11-2X module supports three power modes. The Host can switch among the power modes depending on the Wi-Fi connection status as defined in this section. 6.2.7.1: Power mode 0 In this mode, power save is disabled in the RS9110-N-11-2X module. The module will be in Power Mode 0 by default. 6.2.7.2: Power mode 1 The RS9110-N-11-2X module powers off the Baseband, RF and also the Core Control block in this mode. To power off the Core Control block, the RS9110N-11-2X module sends request to Host for permission to sleep. Once the permission is received the Core Control block is powered off. The Host has to wait for the module to wakeup based on the timer that is configured by the Host, before it can transmit any packets. The functioning of the module in this mode depends on the connection status as explained below 1. Before Wi-Fi connection In this state, the module is configured with a sleep timer. Once the timer expires, the module powers on the Core Control block and Redpine Signals, Inc. Page 24 RS-9110-N-11-28 Self Contained 802.11 a/b/g/n Module with Networking Stack Datasheet Version 1.9 sends the request for sleep permission to the Host again. On getting permission the Host, the module will power off the Core Control block for another interval of the sleep period. If the host wants to perform any Wi-Fi related activity like scanning or joining networks, it has to switch to Power Mode 0. After a connection is established, it can switch back to Power Mode 1 or 2. 2. After Wi-Fi Connection In this state, the RS9110-N-11-2X module periodically wakes up to receive beacons from the Access Point (AP). If there is no data to be transmitted or received to/from the Access Point, it powers off the Baseband and RF components and requests the Host permission to turn off the Core Control block. On receiving permission from the Host, the module goes to sleep and wakes up before the next beacon comes. 6.2.7.3: Power mode 2 The RS9110-N-11-2X module powers off the Baseband and RF components in this mode. The Core Control block interacting with the Host is always functional in this mode. Hence, the module can receive commands from the host at any time. NOTE: The average current consumption in Power Mode 2 is higher than Power Mode 1. The functioning of the module in this mode depends on the connection status as explained below 1. Before Wi-Fi connection If this power mode is enabled before the Wi-Fi connection is established, the module powers off the Baseband and RF components until the Host reconfigures the module to Power Mode 0. If the host wants to perform any Wi-Fi related activity like scanning and joining networks, it has to switch to Power Mode 0. This can be done at any time during the operation. The Host can switch back to Power Modes 1 or 2 after the Wi-Fi connection is established. 2. After Wi-Fi Connection In this state, the RS9110-N-11-2X module gets information from the Access Point to which it is connected for any buffered data at every beacon. If there is no data to be transmitted or received to/from the Access Point, it powers off the Baseband and RF components. Redpine Signals, Inc. Page 25 RS-9110-N-11-28 Self Contained 802.11 a/b/g/n Module with Networking Stack Datasheet Version 1.9 7: Ordering Information Contact Information: For additional information, please contact Sales at Redpine Signals, Inc. Redpine Signals, Inc. 2107 North First Street, Suite 680, San Jose, CA 95131 USA Phone: +1 408 748 3385 E-mail: sales@redpinesignals.com Website: http://www.redpinesignals.com/ Device Ordering Information: The following table lists the part numbers to be used for ordering modules or evaluation boards (EVB). Redpine Signals can create and provide customized firmware based on user requirements. Device Number Description Packaging Qualification RS9110-N-11-28-04 Part with UART/SPI as Host Interface. UART or SPI mode can be selected using the pin MODE_SEL_1. Tray -40 C to +85 C RS9110-N-11-28-04EVB Evaluation board with UART/SPI as Host Interface. UART or SPI mode can be selected using the pin MODE_SEL_1. Board Table 7: Device Ordering Information Collateral: The following documentation and software are available along with the RS9110-N-11-28 module.  Embedded firmware for WLAN and TCP/IP stack  AT Command Interface and SPI driver software  Reference schematics and layout guidelines – Describes hardware schematics to operate the module in UART and SPI modes.  Programming Reference Manual – Describes how to operate the module in UART and SPI modes.  Evaluation Board (EVB) and related user guides Redpine Signals, Inc. Page 26 RS-9110-N-11-28 Self Contained 802.11 a/b/g/n Module with Networking Stack Datasheet Version 1.9 8: Command Reference (AT commands and SPI commands) AT Command Set (for UART interface) and SPI command set (for SPI interface) supports the following in RS9110-N-11-XX module. This is an indicative list and not a full list. Full list of commands available in Programming Reference Manual. i. Configure the band to 2.4GHz or 5 Ghz ii. Initialize MAC and Baseband iii. Scan for avialable networks iv. Join an available network in infrastructure or ad-hoc modes v. Configure IP addresses vi. Open and close TCP and UDP sockets vii. Send and receive data viii. Soft reset ix. Query by host for network parameters like RSSI, IP addresses, security type etc. *** Redpine Signals, Inc. Page 27

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