B plus B SmartWorx APPN551 Model APPN-TT551 Module User Manual
B&B; Electronics Model APPN-TT551 Module
User Manual
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Product Specification 802.11b/g/n Advanced Enterprise Device Server and Access Point Revision: 1.1 May 2013 APPN-TT551 Databook B&B Electronics, Inc. B&B Confidential Copyright © 2013 B&B ® Inc. ALL RIGHTS RESERVED. No part of this publication may be copied in any form, by photocopy, microfilm, retrieval system, or by any other means now known or hereafter invented without the prior written permission of B&B ® Inc. This document may not be used as the basis for manufacture or sale of any items without the prior written consent of B&B Inc. B&B Inc. is a registered trademark of B&B Inc. Airborne™ is a trademark of B&B Inc. All other trademarks used in this document are the property of their respective owners. Disclaimer The information in the document is believed to be correct at the time of print. The reader remains responsible for the system design and for ensuring that the overall system satisfies its design objectives taking due account of the information presented herein, the specifications of other associated equipment, and the test environment. B&B ® Inc. has made commercially reasonable efforts to ensure that the information contained in this document is accurate and reliable. However, the information is subject to change without notice. No responsibility is assumed by B&B for the use of the information or for infringements of patents or other rights of third parties. This document is the property of B&B ® Inc. and does not imply license under patents, copyrights, or trade secrets. B&B, Inc. Headquarters B&B ® Inc. 707 Dayton Road Ottawa, IL, 61350, USA Telephone: 815-433-5100 Toll Free (USA): 888-948-2248 Fax: 815-433-5109 Technical Support: 800-346-3119 / support@bb-elec.com Web Site: www.bb-elec.com APPN-TT551 Databook B&B Electronics, Inc. Contents 1.0 1.1 1.2 1.3 1.4 2.0 3.0 4.0 4.1 4.2 4.3 4.4 4.5 4.6 5.0 5.1 5.2 6.0 6.1 6.2 6.3 6.4 6.5 7.0 7.1 7.2 7.3 7.4 7.5 7.6 8.0 9.0 10.0 11.0 11.1 11.2 11.3 11.4 11.5 11.6 12.0 Conventions ..................................................................................................................................... 5 Terminology ................................................................................................................................ 5 Notes ............................................................................................................................................ 5 Caution ......................................................................................................................................... 5 File Format .................................................................................................................................. 5 Product Description ........................................................................................................................ 6 Model Numbers ............................................................................................................................... 7 Pin out and Connectors ................................................................................................................. 8 Digital UART Ports ..................................................................................................................... 9 Ethernet PHY Port ...................................................................................................................... 9 Serial Peripheral Interface (SPI) .............................................................................................10 Debug/Console Port..................................................................................................................10 General Purpose Input/Output (GPIO) ...................................................................................10 Connector Definition .................................................................................................................11 Electrical & RF Specification ........................................................................................................12 AC Electrical Characteristics – Transmitter ...........................................................................14 Performance/Range ..................................................................................................................14 SPI Interface ...................................................................................................................................15 Pin-out .........................................................................................................................................15 SPI AC Characteristics .............................................................................................................16 SPI Protocol ...............................................................................................................................17 SPI Modes ..................................................................................................................................18 SPI Commands..........................................................................................................................18 Antenna ...........................................................................................................................................21 Antenna Selection .....................................................................................................................21 Host Board Mounted Antenna .................................................................................................21 Host Chassis Mounted Antenna..............................................................................................21 Embedded Antenna ..................................................................................................................22 Antenna Location ......................................................................................................................23 Performance...............................................................................................................................23 RESET Function ............................................................................................................................25 Mechanical Outline ........................................................................................................................26 Recommended Footprint ..............................................................................................................27 Regulatory Certification and Agency Approvals ........................................................................28 FCC Statement ..........................................................................................................................28 FCC RF Exposure Statement ..................................................................................................29 Information for Canadian Users (IC Notice) ..........................................................................29 FCC/IC Modular Approval ........................................................................................................30 End Product Labeling ...............................................................................................................31 Regulatory Test Mode Support ...............................................................................................32 Physical & Environmental Approvals ..........................................................................................33 B&B Electronics, Inc. APPN-TT551 Databook Figures Figure 1 – APPN-TT551 Block Diagram ................................................. Error! Bookmark not defined. Figure 2 - SPI Read/Write Timing ............................................................................................................16 Figure 3 - SPI Clock and Select Timing ..................................................................................................16 Figure 4 - Power on RESET Timing.........................................................................................................25 Figure 5 - RESET Timing ..........................................................................................................................25 Figure 6 – DP550 Mechanical Outline .....................................................................................................26 Figure 7 - Recommended PCB Footprint ................................................................................................27 Figure 8 - Full FCC/IC Label .....................................................................................................................31 Figure 9 - Minimum FCC/IC Label ...........................................................................................................31 Tables Table 1 - Model Numbers ........................................................................................................................... 7 Table 2 – Module Pin Definition ................................................................................................................. 8 Table 3 - UART Pin Definition .................................................................................................................... 9 Table 4- Absolute Maximum Values .......................................................................................................12 Table 5 – Operating Conditions & DC Specification ..............................................................................12 Table 6 - RF Characteristics – 802.11b/g/n ............................................................................................13 Table 7 - Supported Data Rates by Band ...............................................................................................13 Table 8 - Operating Channels ...................................................................................................................13 Table 9 - Radio Typical Performance Range .........................................................................................14 Table 10 - SPI Pinout Details ....................................................................................................................15 Table 11 - SPI Signal Descriptions ..........................................................................................................15 Table 12 - SPI AC Timings ........................................................................................................................16 Table 13 - TX Message Header ...............................................................................................................17 Table 14 - RX Message Header ...............................................................................................................17 Table 15 - SPI Modes ................................................................................................................................18 Table 16 - SPI Command Description .....................................................................................................18 Table 17 - Embedded Antenna Options ..................................................................................................22 Table 18 - RESET Timing..........................................................................................................................25 Table 19 - Regulatory Approvals ..............................................................................................................28 Table 20 - Modular Grant Numbers .........................................................................................................30 Table 21 - Mechanical Approvals .............................................................................................................33 APPN-TT551 Databook 1.0 B&B Electronics, Inc. Conventions The following section outlines the conventions used within the document. Where convention is deviated from the deviation takes precedence and should be followed. If you have any question related to the conventions used or clarification of indicated deviation please contact B&B Sales or Wireless Support. 1.1 Terminology Airborne Enterprise Device Server and AirborneDirect Enterprise Device Server are used in the opening section to describe the devices detailed in this document. After this section the term module will be used to describe the devices. 1.2 Notes A note contains information that requires special attention. The following convention will be used. The area next to the indicator will identify the specific information and make any references necessary. The area next to the indicator will identify the specific information and make any references necessary. 1.3 Caution A caution contains information that -- if not followed -- may cause damage to the product or injury to the user. The shaded area next to the indicator will identify the specific information and make any references necessary. The area next to the indicator will identify the specific information and make any references necessary. 1.4 File Format These documents are provided as Portable Document Format (PDF) files. To read them, you need Adobe Acrobat Reader 4.0.5 or higher. For your convenience, Adobe Acrobat Reader is provided on the Radio Evaluation Kit CD. Should you not have the CD, go to the Adobe Web site (www.adobe.com) and download the latest version of the free Adobe Acrobat Reader. B&B Electronics, Inc. 2.0 APPN-TT551 Databook Product Description The APPN-TT551 module is the latest generation of 802.11 wireless device servers and adapters from B&B. The radio features the following: o 802.11 b/g/n Wi-Fi Radio with 32bit ARM9 CPU (128/256Mb SDRAM, 64Mb Flash) o Atheros AR6203 802.11 b/g/n radio chipset. o Supports Access Point, Infrastructure and AdHoc Client networks (Software selectable) o Access Point device includes: Up to eight (8) simultaneous clients WEP, WPA-PSK and WPA2-PSK security Integrated DHCP server Tx Power Control MAC address filtering o Infrastructure device includes: Supports WEP, WPA, WPA2, 802.11i and 802.1x Supplicant, with Certificates. o The wireless device server includes integrated: 802.11 b/g/n radio driver TCP/IP stack, UDP, telnet, FTP server Data bridging and buffering Command Line Interface Web interface WPA Supplicant 802.11 Radio Driver o Operating Temperature (-40°C to 85°C) o Storage temp (-40°C to 85°C) o 52 Pin mini PCIe card connector o Hirose U.FL RF connector for the antenna o Multiple host interfaces supported: UART (921.6K BAUD) SPI MII/RMII (Bridge/Router modes supported) o No host driver required o Small form factor module o Worldwide Regulatory Support APPN-TT551 Databook Model Numbers The following table identifies the model numbers associated with the device server family. Please contact B&B sales for details, quotes and availability. Table 1 - Model Numbers 802.11i WPA2 WPA WEP GPIO Security MII/RMII SPI 802.11b/g/n, Access Point/Client RS485 APPN-TT551 RS232 Description UART Model Number Interface 802.11 b/g/n Access Point Wi-Fi 802.11 b/g/n Client 3.0 B&B Electronics, Inc. RoHS Evaluation Kits APPN-TT551 Databook B&B Electronics, Inc. 4.0 Pin out and Connectors Pin definition is dependent upon the device type selected. The specific pin function is defined in Table 2 for each device type. Where multiple options are available for a single device type, these options are software selectable by the device firmware. Table 2 – Module Pin Definition Pin Signal Description PCIe Pin Mapping VSS Not Used DVDD DVDD Not Used DBG_TXD Ground 9,15,21,27,29,35,50,40,34,26,18,4 Not Used 2,24,52 2,24,52 Not Used 30 22 #RESET 10 DBG_RXD Not Used Not Used 11 #DEFAULT/LED_LINK 12 UART_CTS1/SPI_SEL 13 14 15 16 17 LAN_RX+ LAN_RXVSS 18 UART_RTS1/SPI_CLK 19 20 21 Not Used Not Used Not Used 22 SRL_MODE/SPI_INT 23 LED_CONNECT 24 UART_RXD1/SPI_MOSI 25 26 27 LED_POST LED_WLAN_CFG Not Used VSS Not Used Power, +3.3 V Power, +3.3 V Debug serial transmit data Reset active low input. A transition to high releases the reset condition (see “Reset” in the Data book). There is a weak pull-up on this pin. Debug serial receive data At boot, restore factory default active low input. LAN link or serial connection detected LED output. May be used as digital input or 3.3 V CMOS-compatible digital output (VOL≤0.4, 2.4 V≤ VOH). Primary UART clear to send input or SPI select output Signal is LVTTL-compatible. LAN receive positive LAN receive negative Ground Ground Primary UART request to send output or SPI clock input Signal is LVTTL-Compatible. Serial transceiver protocol select output or SPI interrupt output (see Error! Reference source not found.). Signal is LVTTL-Compatible. Wireless TCP session established LED output Primary UART receive data input or SPI slave data input. Signal is LVTTL-Compatible. Power-on self-test LED output Wireless IP address assigned LED output 32 Not Used Not Used 45 36 Not Used Not Used 9,15,21,27,29,35,50,40,34,26,18,4 9,15,21,27,29,35,50,40,34,26,18,4 Not Used 38 Not Used Not Used Not Used 47 20 51 44 46 Not Used APPN-TT551 Databook Pin B&B Electronics, Inc. Signal 28 UART_TXD1/SPI_MISO 29 30 31 32 33 34 35 36 LAN_TXLAN_TX+ Not Used Not Used DVDD DVDD LED_#RF_ACT VSS 4.1 Description PCIe Pin Mapping Primary UART transmit data output or SPI slave data output. Signal is LVTTL-Compatible. LAN transmit negative LAN transmit positive 49 Power, +3.3 V Power, +3.3 V RF activity LED active low output Ground Not Used Not Used Not Used Not Used 2,24,52 2,24,52 42 9,15,21,27,29,35,50,40,34,26,18,4 Digital UART Ports The device supports a digital UART port. Use of this port is determined by the device type choice made in firmware. The details of the port can be seen in Table 3. Table 3 - UART Pin Definition Device Type UART 1 All Pin Definition UART1 Pin Debug Data out (DOUT) 28 Data In (DIN) 24 Clear-to-Send (CTS) 12 Ready-to-Send (RTS) 18 Serial Mode (SER_MOD) The primary UART1 supports a 4-wire interface. The primary digital UART1 can be used as the primary connection for the Serial device type. Definitions of this interface can be seen in Table 3. The UART1 interface supports the following possible configurations: BAUD: 300, 600, 1200, 2400, 4800, 9600, 14400, 19200, 28800, 38400, 57600, 115200, 230400, 460800, 921600 Flow Control: None, Hardware (CTS/RTS), Software (XON/XOFF) Default settings: 9600, 8, N, 1, No Flow Control. 4.2 Ethernet PHY Port An MII/RMII 10/100 Ethernet PHY interface is supported. It is enabled by default when the Ethernet device type is selected in firmware. APPN-TT551 Databook B&B Electronics, Inc. 4.3 Serial Peripheral Interface (SPI) Please refer to section 6.0 for details on this interface. 4.4 Debug/Console Port A debug/console port is supported by a 2-wire serial interface defined in Table 3. This port is a bi-directional serial port intended for debug of the unit only. It does not support data transfer. It is recommended that a connection to this port be supported via test points or a two pin header. The default settings for the debug port are 115200, 8, N 1, No Flow Control. CAUTION: Do not use the debug port without contacting B&B Technical Support first. Potential damage to the module may occur. 4.5 General Purpose Input/Output (GPIO) A number of the interface pins support multiple functional definitions. Those alternately defined as GPIO pins can be selected as such via device firmware. The GPIO pins are digital I/O capable of supporting up to an 8mA drive current at 3.3VDC. 10 APPN-TT551 Databook 4.6 B&B Electronics, Inc. Connector Definition There are a total of three connectors to the radio: CN1: 52 pin Mini PCIe form factor ANT1: RF connector for 802.11b/g/n antenna. Hirose U.FL 11 APPN-TT551 Databook B&B Electronics, Inc. 5.0 Electrical & RF Specification Table 4- Absolute Maximum Values1 Parameter Min Max Unit Supply Voltage -0.5 3.6 VDC Power Dissipation 2.00 Operating Temperature Range -40 85 Storage Temperature -40 85 Note: 1. Values are absolute ratings, exceeding these values may cause permanent damage to the device. Table 5 – Operating Conditions & DC Specification Symbol Parameter Min Typ Max Units VDD Supply Voltage 3.14 3.30 3.60 VIL Input Low Level Voltage -0.3 0.8 VIH Input High Level Voltage 2.0 VDD + 0.3 VOL Output Low Level Voltage VOH Output High Level Voltage IIR Inrush current 0.4 VDD - 0.4 1500 mA 400µs duration ICCG Operating Current – UART Data (802.11g) 320 mA 430 mA 190 mA Connection Rate @ 54Mb/s UART 100% Duty Cycle @ 920K BAUD ICCB Operating Current – UART Data (802.11b) Connection rate @ 11Mb/s UART 100% Duty Cycle @ 920K BAUD ICCU 12 Radio and CPU on. No data traffic (UART) APPN-TT551 Databook B&B Electronics, Inc. Table 6 - RF Characteristics – 802.11b/g/n POUTB Transmit Power Output 802.11b 11, 5.5, 2, 1 15.0 31.6 dBm POUTG Transmit Power Output 802.11g 6, 9, 12, 18, 24, 36, 48, 54 12.6 18.2 dBm PRSENB Receive Sensitivity 802.11b FRANGEBG Min Peak dBm / mW Parameter PRSENG Rate (Mb/s) Average dBm / mW Symbol 11 -86 -92 54 -72 36 -78 18 -84 -89 Units dBm Receive Sensitivity 802.11g dBm Frequency Range 802.11b/g 2401 2495 MHz Table 7 - Supported Data Rates by Band Band Supported Data Rates (Mb/s) 802.11b 11, 5.5, 2, 1 802.11g 54, 48, 36, 24, 18, 12, 9, 6 802.11n 65, 58.5, 42, 39, 26, 19.5 13, 6.5 Table 8 - Operating Channels Band 802.11b1,2 802.11g1,2 Region Freq Range (GHz) No. of Channels Channels US/Canada 2.401 - 2.473 11 1 – 11 Europe 2.401 - 2.483 13 1 – 13 Japan 2.401 - 2.495 14 1 – 14 US/Canada 2.401 - 2.473 11 1 – 11 Europe 2.401 - 2.483 13 1 – 13 Japan 2.401 - 2.483 13 1 – 13 1. Only channels 1, 6 and 11 are non-overlapping. 2. Channel 14 is non-overlapping (Japan only). 13 APPN-TT551 Databook B&B Electronics, Inc. 5.1 AC Electrical Characteristics – Transmitter Transmit power is automatically managed by the device for minimum power consumption. The MAXIMUM transmit power at the RF connector is typically +15dBm ± 2 dB for all bands (b/g/n) and rates. 5.2 Performance/Range The following table illustrates the typical data rates, performance and range that the device is capable of providing using an omni directional antenna. Table 9 - Radio Typical Performance Range Typical Outdoor Distance Data Rate (2dBi antenna gain on each end for B/G mode) 1.0 Mb/s 350m 11.0 Mb/s 270m 6Mb/s 802.11g 260m 54Mb/s 802.11g 104m Ranges are based on receiver sensitivity, Transmitter power, free-space path loss estimates, antenna gain factors, and link margin estimates. Actual range will vary from those stated. Non line-of-sight applications will result in typical values less than shown above. The Data Rate is the supported connection rate for the wireless link. However, the actual data throughput for the link will be less than the stated data rates. 14 APPN-TT551 Databook 6.0 B&B Electronics, Inc. SPI Interface The following section details the SPI interface specification for both hardware timing and SPI protocol. The device is a SPI slave and requires a compatible SPI master for operation. 6.1 Pin-out When the SPI interface is enabled, through the CLI or web interface, the following pins are assigned for communication. Table 10 - SPI Pinout Details Pin Definition SPI Master In Slave Out (MISO) 28 Master Out Slave In (MOSI) 24 SPI Interrupt (SPI_INT) 22 SPI Clock (SPI_CLK) 18 SPI Select (/SPI_SEL) 12 Table 11 - SPI Signal Descriptions Pin Definition Description Master In Slave Out (MISO) Serial Data OUT; must be connected to the serial data in of the master. Master Out Slave In (MOSI) Serial Data IN; Must be connected to the serial data out of the master. SPI Interrupt (SPI_INT) Interrupt signal driver by slave see Table 16 for details of operation. SPI Clock (SPI_CLK) SPI clock sourced from the master. SPI Select (/SPI_SEL) Enable the SPI slave, sourced from the master. Active low signal. Use of the SPI interface is mutually exclusive with the use of UART1 and the Ethernet ports, as the API interface reuses pins from both of these interfaces. 15 APPN-TT551 Databook B&B Electronics, Inc. 6.2 SPI AC Characteristics The following specification identifies the required hardware timing to successfully implement a SPI interface with the Airborne Device Server module. Table 12 - SPI AC Timings Symbol Parameter Min fMAX Maximum Clock Frequency tCS SPI Select Low to Clock Rising Edge 100 ns tCH Clock High 62.5 ns tCL Clock Low 62.5 ns tDA Clock High to Data Out Max Units 8.00 MHz tDS Clock Low to Data In Valid Set-up time 14 ns tDH Clock Low to Data Valid Hold time ns tCSH Clock Falling Edge to SPI Select High 100 ns tDELAY SPI Select High to SPI Select Low 40 µs 60 Figure 1 - SPI Read/Write Timing Figure 2 - SPI Clock and Select Timing 16 Typ ns APPN-TT551 Databook 6.3 B&B Electronics, Inc. SPI Protocol A SPI message is composed of a 4 byte header followed by 0 or more bytes of data. The header data is full-duplex. That is, the TX message header is sent to the Airborne Device Server module by the host at the same time that the RX message header is sent to the host from the Airborne Device Server. The TX message header consists of a Command (CMD) byte, followed by three Parameter (PARM) bytes. They are described in the SPI Commands section 0 below. The RX message header is shifted out as the first four bytes of an SPI message regardless of the contents of the TX message header. The RX message header consists of a RX Data Available field and a TX Buffer Available field. The RX Data Available field indicates the number of data bytes the Device Server has available for the host. The data can be received by the RXDATA command. The TX Buffer Available field indicates how many data bytes the Device Server is able to accept from the host. This data is to be shifted in by the host using the TXDATA (Table 16) command. Both fields are 16 bit values and are stored in little-endian format (Least significant byte first). The /SPI_SEL signal must be de-asserted between successive SPI messages. The messages will not be processed correctly if /SPI_SEL is held asserted across multiple messages. Table 13 - TX Message Header CMD PARM1 PARM2 Table 14 - RX Message Header RX Data Available TX Buffer Available SPI data is transferred most significant bit first (msb). 17 APPN-TT551 Databook B&B Electronics, Inc. 6.4 SPI Modes The Airborne device supports the following four SPI modes. These are selectable through the command line or web interfaces. The default mode is zero (0). Table 15 - SPI Modes 6.5 SPI Mode Clock Idle Clocking Edge Low High-Low (trailing edge) Low Low-High (leading edge) High Low-High (trailing edge) High High-Low (leading edge) SPI Commands The following commands are available for use in the CMD message header. Unused parameters should be set to zero. Table 16 - SPI Command Description Command (Hex) Name 0x00 NOP Description The NOP command does nothing. It is intended to be used when the host wants to simply retrieve the RX Message Header without any other operation. PARM1 and PARM2 are unused for this command and should be set to zero. 0x04 BREAK The BREAK command will issue a break sequence to the module. It is analogous to the BREAK signal on a common UART. Use this command to issue a BREAK if the esc-mode-serial brk setting is configured in the module. PARM1 and PARM2 are unused for this command and should be set to zero. 0x08 TXINTCLR The TXINTCLR command will clear the TX interrupt. Use this command when the module is issuing a TX interrupt but the host has no more data to send. This is analogous to the reset TX interrupt command on a common UART. The result of this command is that the TX interrupt is cleared even though the host is not writing more data to the module. PARM1 and PARM2 are unused for this command and should be set to zero. 18 APPN-TT551 Databook B&B Electronics, Inc. Command (Hex) Name Description 0x10 INTENA The INTENA command will configure the specific interrupts to be enabled from the module. For this command, the PARM1 field will define the interrupts to be enabled. The definition of the PARM1 field for this command is a bit-mask and is formatted as follows: Bit 7 Interrupt Sense – Determines the asserted state of the interrupt pin. If this bit is set to a 1, the interrupt pin will be active high; otherwise the interrupt pin will be active low. The module will use the setting of this bit from the most recently issued INTENA command to determine the Interrupt Sense. Bit 1 TX Interrupt – If this bit is set to a 1, the interrupt pin will be asserted when there is space available in the TX buffer. The interrupt will be cleared when the module has TX data to process from the host. Alternately, the host can clear this interrupt by using the TXINTCLR command if the host has no more data to send. Bit 0 RX Interrupt – If this bit is set to a 1, the interrupt pin will be asserted when there is RX data available. The interrupt will be cleared when the host has received all the RX data available from the module. All other bits of PARM1 are unused for this command and should be set to zero. PARM2 is unused for this command and should be set to zero. For example, to enable TX interrupts with the interrupt pin active high, use the SPI message 0x10 0x82 0x00 0x00. That is, SPI command 0x10, PARM1 is 0x82, PARM2 is 0x0000. Important: The INTENA command can only be used to enable the specified interrupts. This command cannot be used to disable specified interrupts by setting the corresponding interrupt enable bits to zero in PARM1. The INTDIS command must be used to disable the specified interrupts. 0x20 INTDIS The INTDIS command will configure the specific interrupts to be disabled from the module. For this command, the PARM1 field will define the interrupts to be disabled. The definition of the PARM1 field for this command is a bit-mask and is formatted as follows: Bit 1 TX Interrupt – If this bit is set to a 1, The TX interrupt function will be disabled. Bit 0 RX Interrupt – If this bit is set to a 1, the RX interrupt function will be disabled. All other bits of PARM1 are unused for this command and should be set to zero. PARM2 is unused for this command and should be set to zero. For example, to disable TX interrupts, use the SPI message 0x20 0x02 0x00 0x00. That is, SPI command 0x20, PARM1 is 0x02, PARM2 is 0x0000. 19 APPN-TT551 Databook B&B Electronics, Inc. Command (Hex) Name 0x40 TXDATA Description The TXDATA command is used to send data to the module to be interpreted as commands if the module is in CLI mode, or to be transmitted on the wireless link if the module has an active data connection established. The host may send at most the number of bytes indicated by the TX Buffer Available field in the RX Message Header. The actual number of bytes sent by the host is determined by the 16 bit value in PARM2. The value in PARM2 is little-endian (least significant byte first) and must be less than or equal to the number in the TX Buffer Available field. Any bytes sent in excess of this number will be ignored. PARM1 is unused for this command and should be set to zero. For example, to send the auth dpac dpac command, use the SPI message 0x40 0x00 0x0F 0x00 0x61 0x75 0x74 0x68 0x20 0x64 0x70 0x61 0x63 0x20 0x64 0x70 0x61 0x63 0x0D. That is, SPI command 0x40, PARM1 is 0x00, PARM2 is 0x000F, followed by the text for auth dpac dpac. 0x80 RXDATA The RXDATA command is used to receive data from the module. In CLI mode, this data will be the local echoing of the commands issued to the module, as well as the command responses generated by the module. If the module has an active data connection established, this data will be the data received on the wireless link. The host may receive at most the number of bytes indicated by the RX Data Available field in the RX Message Header. The actual number of bytes received by the host is determined by the 16 bit value in PARM2. The value in PARM2 is little-endian (least significant byte first) and must be less than or equal to the number in the RX Data Available field. If additional clock cycles are sent to the module beyond this number, meaningless data will be returned. PARM1 is unused for this command and should be set to zero. The TXDATA and RXDATA commands can be combined for full-duplex operation. For example, a command byte of 0xC0 would be a TXDATA and RXDATA command combined. The result of this command would be that the module would accept data being shifted in as TX data, while at the same time, RX data would be shifted out. In this case, the number of bytes transferred for TXDATA must be equal to the number of bytes transferred for RXDATA. The PARM2 parameter will indicate the number of bytes to be transferred for both the TXDATA and RXDATA commands. 20 APPN-TT551 Databook 7.0 B&B Electronics, Inc. Antenna The unit supports antenna connections through a Hirose U.FL connector (ANT1). It is located on the top surface of the device next to the RF shielding. Any antenna used with the system must be designed for operation within: the 2.4GHz ISM band and must specifically support 2.412GHz to 2.482GHz for 802.11b/g operation. They are required to have a VSWR of 2:1 maximum referenced to a 50Ω system impedance. 7.1 Antenna Selection The Airborne radio supports a number of antenna options, all of which require connection to the U.FL connectors on the radio. The best antenna option will be determined by a number of factors. These include the application, mechanical construction and desired performance. Since the number of possible combinations is enormous, we will review some of the more common solutions in this section. Contact Technical Support for more specific answers if your application is not covered during this discussion. The available antenna connections include: Host board mounted antenna Host chassis mounted antenna Embedded antenna Location and performance also need to be considered. The following sections discuss these factors. 7.2 Host Board Mounted Antenna Host board mounting requires that an antenna connection be physically mounted to the host system board. It also requires that the host board include a U.FL connector to allow a U.FL to U.FL coaxial lead to connect from the radio to the host board. It will then require 50Ω matched PCB traces to be routed from the U.FL connector to the antenna mount. There are several sources for the U.FL to U.FL coaxial cable. These include Hirose, Sunridge and IPEX. Please contact B&B for further part numbers and supply assistance. This approach can simplify assembly, but it does require that the host system configuration can accommodate an antenna location that is determined by the host PCB. This approach also makes it harder to seal the enclosure. Host board mounting also limits your choices of antenna. You must use antennas that screw or press fit to the PCB mount connector. There are many antenna connector types, but if you wish to utilize the FCC/IOC modular approval the connector choice must comply with FCC regulations. These state that a nonstandard connector is required. For example, RP-TNC/RP-SMA are allowed, and TNC/SMA are not. 7.3 Host Chassis Mounted Antenna Host Chassis mounted antennas require no work on the host PCB. They use an antenna type called ‘flying lead’. There are two types of flying leads. One 21 APPN-TT551 Databook B&B Electronics, Inc. provides a bulkhead mounted antenna connector and the other provides a bulk head mounted antenna. The type you choose will be determined by the application. A flying lead system connects a U.FL coaxial lead to the radio’s U.FL connector. The other end of the coax is attached to either a bulkhead mounted antenna connector or directly to an antenna that has an integrated bulkhead mount. In either case, the use of host chassis mounting significantly reduces the antenna system development effort. It provides for greater flexibility in antenna choice and placement in the host system chassis. When using the flying lead antenna (integrated bulk head mounting) there are no connector choice restrictions for use with the FCC/IOC modular certification. However if the flying lead connector is used, the same restrictions as identified for the Host Mounted Antenna apply. There are many suppliers of flying lead antenna and connectors. B&B’s Airborne Antenna product line offers a range of antenna solutions. 7.4 Embedded Antenna Embedded antennas can be the most interesting approach for M2M, industrial and medical applications. Their small form factor and the absence of any external mounting can make them very useful. But they will typically provide lower performance than an external antenna. This does not make them unusable, but it will impact the choice of antenna type and it will require more focus on antenna placement. The three main embedded antenna types are PCB embedded, chip (PCB mounted) and flying lead. Each has its advantages and disadvantages (See Table 17). Table 17 - Embedded Antenna Options Features Antenna Type Cost Size Availability Performance Lowest Largest Custom Poor Chip Low Small Standard Poor Flying Lead Low Small Standard Fair PCB Embedded PCB Embedded – This approach embeds an antenna design into the host PCB. It is very common with add-in Wi-Fi cards (CF, PCMCIA, SDIO, etc.), as it requires no external connections and has the lowest production cost. But the lower production costs are offset by significant development costs and diminished performance and flexibility. Chip – The integration of a chip antenna is simple, and it requires a relatively small footprint on the host system. But, like a PCB embedded antenna, there will be limitations in flexibility and performance. Many suppliers can provide chip antennas; many configuration and performance options are available. Flying Lead – Embedded flying lead antennas are similar to external flying lead antennas. The difference is that the embedded antennas have smaller form factors and provide a range of chassis and board mounting options. Embedded 22 APPN-TT551 Databook B&B Electronics, Inc. flying lead antennas tend to provide more performance and flexibility than other approaches, since the location of the antenna is not determined by the host PCB design. The assembly of a system using embedded flying lead antennas may be slightly more complex, as the antenna is not necessarily mounted on the host PCBA. 7.5 Antenna Location The importance of location cannot be over stressed. It can often be the difference between the success and failure of a Wi-Fi implementation. There are several factors that need to be considered when determining location: Distance of Antenna from radio. Location of host system. − − − Proximity to RF blocking or absorbing materials. Proximity to potential noise or interference. Position relative to infrastructure (Access Points or Laptops). Orientation of host system relative to infrastructure. − − Is it known? Is it static? The following things need to be considered during the development process: 1. Minimize the distance between the radio and the location of the antenna. The coaxial cable between the two impacts the Transmit Power and Receive Sensitivity negatively. B&B recommends using 1.32-1.37mm outer diameter U.FL coaxial cables. 2. Minimize the locations where metal surfaces come into contact or are close to the location of the antenna. 3. Avoid locations where RF noise may occur, whether it is close to or overlapping the ISM bands. This would include microwave ovens and wireless telephone systems in the 2.4GHz frequency range. 4. Mount the antenna as high on the equipment as possible. 5. Locate the antenna where there is a minimum of obstruction between the antenna and the location of the Access Points. Access Points are typically located in the ceiling or high on walls. 6. Keep the main antenna’s polarization vertical, or in-line with the antenna of the Access Points. 802.11 systems use vertical polarization and aligning both transmit and receive antenna maximizes the link quality. All of these factors will influence connection quality. 7.6 Performance Performance is difficult to define. The appropriate metric changes with each application, and may be a combination of parameters and application requirements. The most important characteristic will normally be link quality. This can be defined as the available bandwidth between the two devices. The lower the link quality, the less likely it will be that the devices can communicate. Measurement of link quality can be made in several ways; Bit Error Rate (BER), Signal to Noise (SNR) ratio, Signal Strength and distortion. The link quality is used by the radio to determine the link rate. In general, when the link quality for 23 APPN-TT551 Databook B&B Electronics, Inc. a given link rate drops below a predefined limit the radio will drop to the next lowest link rate and try to communicate at that rate. The reverse is also true. If the radio observes good link quality at one rate it will try to move up to the next rate to see if communication can still be sustained. Note that for a given position the link quality improves as the link rate is reduced. As the link rate drops, the radios’ Transmit power and Receive sensitivity improve. Looking at the link rate is an indirect way of assessing the quality of the link between the device and an Access Point. You should strive to make the communication quality as good as possible in order to support the best link rate. But be careful not to over specify the link rate. Consider your application’s bandwidth requirements and tailor your link rate to optimize the link quality. For example, if the link quality for a location at 6Mb/s is better than it would be for 54Mb/s, and the application only needs 2Mb/s of data throughput, the 6Mb/s rate would provide better link quality. Radio performance is only one of the things that contribute to the link quality. Other factors include the items discussed earlier and choices made regarding overall antenna gain. The antenna gain contributes to the Equivalent Isotropically Radiated Power (EIRP) of the system. This is called link margin, and it is part of the overall measurement of the link quality. Link Margin provides a measure of all the parts of the RF path that impact the communications between two systems. The basic equation looks like this: EIRP (dB) = TxP + TxA – TxC Link Margin (dB) = EIRP – FPL + (RxS + RxA – RxC) Where: TxP = Transmitter output power (dBm) TxA = Transmitter antenna gain (dBi) TxC = Transmitter to Antenna coax cable loss (dB) FPL = Free Path Loss (dB) RxS = Receiver receive sensitivity (dBm) RxA = Receiver antenna gain (dBi) RxC = Receiver to Antenna coax cable loss (dB) This is a complex subject and we won’t try to cover it here. B&B’s technical experts can help you if you need to explore it in more detail. But you should understand that optimizing link quality involves a combination of hardware selection, design choices and radio configuration. 24 APPN-TT551 Databook 8.0 B&B Electronics, Inc. RESET Function For correct operation of the on-board Power-on RESET (POR) and internal RESET controllers, the RESET pin on the module must obey the following timing and signal conditions. Figure 3 - Power on RESET Timing Figure 4 - RESET Timing Table 18 - RESET Timing Symbol Parameter tPURST Valid VDD to RESET valid tRLRV RESET Valid to RESET Low tRPWI Valid VDD to Internal RESET completed tRPW RESET Pulse Width Min Typ Max Units 200 ms ms 200 100 ms µs 25 APPN-TT551 Databook B&B Electronics, Inc. 9.0 Mechanical Outline Figure 5 – APPN-TT551 Mechanical Outline Module Connector: 52 Pin Mini PCIe form factor Board Connector: 0679105700 (Molex Inc) Molex Inc: PCIe Mini card edgecard 52 pos RF Connector: U.FL Hirose: Ultra Small Surface Mount Coaxial Connector 26 APPN-TT551 Databook B&B Electronics, Inc. 10.0 Recommended Footprint Figure 6 - Recommended PCB Footprint 27 APPN-TT551 Databook B&B Electronics, Inc. 11.0 Regulatory Certification and Agency Approvals IMPORTANT! It is required that the following section be read and understood before use of the B&B Airborne™ device is permitted. Use of approved antenna is required for compliance to FCC and IC regulations. The unit complies with the following agency approvals: Table 19 - Regulatory Approvals Country Standard Status FCC Part 15 North America (US & Canada) Sec. 15.107, 15.109, 15.207, 15.209, 15.247 Pending Modular Approval CISPR 16-1 :1993 Europe ETSI EN 300 328 Part 1 V1.2.2 (2000-07) Pending ETSI EN 300 328 Part 2 V1.1.1 (2000-07) ARIB STD-T71 v1.0, 14 (Dec 2000) Japan ARIB RCR STD-T33 (June 19, 1997) Pending ARIB STD-T66 v2.0 (March 28, 2002) 11.1 FCC Statement This equipment has been tested and found to comply with Part 15 of the FCC Rules. Operation is subject to the following two conditions: 1. This device may not cause harmful interference, and 2. This device must accept any interference received, including interference that may cause undesired operation. This equipment generates, uses, and can radiate radio frequency energy and if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures: Reorient or relocate the receiving antenna. Increase the separation between the equipment and receiver. Connect the equipment to an outlet on a circuit different from that to which the receiver is connected. Consult the dealer or an experienced radio/TV technician for assistance. Changes or modifications not expressly approved by the party responsible for compliance could void the user’s authority to operate the equipment. 28 APPN-TT551 Databook 11.2 B&B Electronics, Inc. FCC RF Exposure Statement To comply with FCC/IC RF exposure compliance requirements, the antenna used for this transmitter must be installed to provide a separation distance of at least 20 cm from all persons and must not be co-located or operate in conjunction with any other antenna or transmitter. As such, the radio component of this device is intended only for OEM integrators under the following two conditions: • The antenna must be installed such that 20 cm is maintained between the antenna and users. • The transmitter module may not be co-located with any other transmitter or antenna. As long as the two conditions above are met, further transmitter testing will not be required. However, the OEM integrator is still responsible for testing their end product for any additional compliance requirements required with this module installed (e.g., digital device emissions, PC peripheral requirements). In the event that these conditions cannot be met (for example, co-location with another transmitter), then the FCC authorization is no longer considered valid and the FCC ID cannot be used on the final product. In these circumstances, the OEM integrator will be responsible for re-evaluating the end product (including the transmitter) and obtaining a separate FCC authorization. 11.3 Information for Canadian Users (IC Notice) This device has been designed to operate with an antenna having a maximum gain of 3.8dBi in the 2.4GHz band. An antenna having a higher gain is strictly prohibited per regulations of Industry Canada. The required antenna impedance is 50Ω. Only approved antenna may be used with this equipment. Under Industry Canada regulations, this radio transmitter may only operate using an antenna of a type and maximum (or lesser) gain approved for the transmitter by Industry Canada. To reduce potential radio interference to other users, the antenna type and its gain should be so chosen that the Equivalent Isotropically Radiated Power (EIRP) is not more than required for successful communication. Conformément à la réglementation d'Industrie Canada, le présent émetteur radio peut fonctionner avec une antenne d'un type et d'un gain maximal (ou inférieur) approuvé pour l'émetteur par Industrie Canada. Dans le but de réduire les risques de brouillage radioélectrique à l'intention des autres utilisateurs, il faut choisir le type d'antenne et son gain de sorte que la puissance isotrope rayonnée équivalente (p.i.r.e.) ne dépasse pas l'intensité nécessaire à l'établissement d'une communication satisfaisante. This radio transmitter (3913A-APPN551) has been approved by Industry Canada to operate with the antenna types listed below with the maximum permissible gain and required antenna impedance for each antenna type indicated. Antenna types not included in this list, having a gain greater than the maximum gain indicated for that type, are strictly prohibited for use with this device. Cet émetteur radio (3913A-APPN551) a été approuvé par Industrie Canada pour fonctionner avec les types d'antennes énumérés ci-dessous avec le gain maximal admissible et l'impédance d'antenne requise pour chaque type d'antenne indiqué. Types d'antennes ne figurent pas dans cette liste, ayant un 29 APPN-TT551 Databook B&B Electronics, Inc. gain supérieur au gain maximum indiqué pour ce type, sont strictement interdites pour une utilisation avec cet appareil. The following is a list of the Antenna’s approved to work with this transmitter, please contact your B&B representative if you have any questions. MFG P/N Max. Gain 2.4G (dBi) Impedance (Ω Ω) Taoglas GW.71.5153 3.8 50 The installer of this radio equipment must ensure that the antenna is located or pointed such that it does not emit RF field in excess of Health Canada limits for the general population; consult Safety Code 6, obtainable from Health Canada’s website www.hc-sc.gc.ca. This Device complies with Industry Canada license-exempt RSS standard(s).Operation is subject to the following two conditions: (1) this device may not cause interference, and (2) this device must accept any interference, including interference that may cause undesired operation of the device. Le présent appareil est conforme aux CNR d'Industrie Canada applicables aux appareils radio exempts de licence. L'exploitation est autorisée aux deux conditions suivantes : (1) l'appareil ne doit pas produire de brouillage, et (2) l'utilisateur de l'appareil doit accepter tout brouillage radioélectrique subi, même si le brouillage est susceptible d'en compromettre le fonctionnement. 11.4 FCC/IC Modular Approval This document describes the Airborne FCC modular approval and the guidelines for use as outlined in FCC Public Notice (DA 00-1407). The APPN-TT551 is covered by the following modular grants: Table 20 - Modular Grant Numbers Country Standard Grant FCC Part 15 North America (US) Sec. 15.107, 15.109, 15.207, 15.209, 15.247 F4AAPPN551 Modular Approval Canada RSS 210 Modular Approval 3913A-APPN551 By providing FCC modular approval on the Airborne module, the customers are relieved of any need to perform FCC part15 subpart C Intentional Radiator testing and certification, except where they wish to use an antenna that is not already certified. B&B supports a group of pre-approved antenna; use of one of these antennas eliminates the need to do any further subpart C testing or certification. If an antenna is not on the list, it is a simple process to add it to the pre-approved list without having to complete a full set of emissions testing. Please contact B&B Technical support for details of our qualification processes. Please note that as part of the FCC requirements for the use of the modular approval, the installation of any antenna must require a professional installer. This is to prevent any non-authorized antenna being used with the radio. There 30 APPN-TT551 Databook B&B Electronics, Inc. are ways to support this requirement but the most popular is to utilize a nonstandard antenna connector, this designation includes the reverse polarity versions of the most popular RF antenna types (SMA, TNC, etc.). For more details please contact B&B. The following documents are associated with this applications note: FCC Part 15 – Radio Frequency Devices th FCC Public Notice – DA 00-1407 (June 26 , 2000) B&B recommends that during the integration of the radio, into the customers system, that any design guidelines be followed. Please contact B&B Technical Support if you have any concerns regarding the hardware integration. Contact B&B Technical support for a copy of the FCC and IOC grant certificates, the test reports and updated approved antenna list. 11.5 End Product Labeling This transmitter module is authorized only for use in devices where the antenna may be installed such that 20 cm may be maintained between the antenna and users. The final end product must be labeled in a visible area with the FCC and Industry of Canada Grant numbers as shown in Table 20. The following label or similar must be placed on the outside of the product, utilizing the Airborne™ device, whenever physically possible: Figure 7 - Full FCC/IC Label Figure 8 - Minimum FCC/IC Label When the device is so small or for such use that it is not practicable to place the label shown in Figure 7, the label shown in Figure 8 may be used, however the information required shall also be placed in a prominent location in the instruction manual or pamphlet supplied to the user. Alternatively, the required information shown in Figure 7 shall be placed on the container in which the device is marketed. In all cases the FCC and IC identifiers must be displayed on the device in which the module is installed. 31 APPN-TT551 Databook B&B Electronics, Inc. 11.6 Regulatory Test Mode Support The Airborne Device Server includes support for all FCC, IC and ETSI test modes required to perform regulatory compliance testing on the module, please contact B&B Technical Support for details on enabling and using these modes. 32 APPN-TT551 Databook B&B Electronics, Inc. 12.0 Physical & Environmental Approvals The device has passed the following primary physical and environmental tests. The test methods referenced are defined in SAE J1455 Aug1994. Table 21 - Mechanical Approvals Test Temperature Range (Operational) Reference Conditions Table 1B, Type 2b -40°C to +85°C Temperature Range (NonOperational) -40°C to +85°C Humidity Sect 4.2.3 Altitude Sect 4.8 0-95%RH @ 38°C condensing Fig 4a – 8 hours active humidity cycle Operational: 0-12,000ft (62 KPa absolute pressure) Non-operational: 0-40,000ft (18.6 KPa absolute pressure) Test reports are available from B&B Technical Support. Please contact directly for the latest documentation. 33
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