Anaren Integrated Radio (AIR) Low-power RF modules, firmware & development tools that make it easy to ‘go wireless’ Anaren Integrated Radio A8520E24A91 User’s Manual Release Date: 01/23/15 Anaren, Inc. | 6635 Kirkville Road | East Syracuse, NY 13057 800.411.6596 | www.anaren.com/air | AIR@anaren.
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iii USER'S MANUAL Model A8520E24A91 Contents 1. 2. 3. 4. 5. Overview ..........................................................................................................................................................5 1.1. Features.......................................................................................................................................................6 1.2. Theory of Operation...........................................................................................
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A8520E24A91 – User’s Manual Release Date 01/23/15 Page 5 of 36 1. Overview The A8520E24A91 module is a surface mount module integrating a CC8520PurePath™ wireless audio transceiver with the CC2591 PA/LNA device for increased range and an integral antenna. The module incorporates a crystal, the required RF matching and filtering for regulatory compliance as well as filtering on all digital lines for noise reduction and sensitivity. The module operates in the global non-licensed 2.
Page 6 of 36 1.1. A8520E24A91 – User’s Manual Release Date 01/23/15 Features Features: Benefits Summary: Un-Compressed Wireless Audio Connectivity Pre-defined protocol Configurable human interface Autonomous or Hosted mode 2.2 to 3.6 V operation Programmable output power up to +19 dBm RoHS compliant Very small package size: 11mm x 19mm x 2.5mm 1.2.
A8520E24A91 – User’s Manual Release Date 01/23/15 Page 7 of 36 Figure 1 The functionality of the A8520E24A91, using an integral antenna Table 2 Approved Antenna Item Part Number 1 Integral part of A8520E24A91 Manufacturer Type Gain dBi) Anaren Integral Antenna 2 Anaren Integrated Radio (AIR)
Page 8 of 36 A8520E24A91 – User’s Manual Release Date 01/23/15 1.2.1. Network Topology and Nomenclature An A8520E24A91 network consists of one Protocol Master (PM) and one or two Protocol Slave(s) (PS). The PM provides the audio reference clock and controls network association. The PS regenerates the audio reference clock based on the packets received. Audio can be transmitted from the PM to the PS.
A8520E24A91 – User’s Manual Release Date 01/23/15 Page 9 of 36 1.2.2. Adaptive Frequency Hopping The purpose of using frequency hopping in a radio system is to provide diversity that allows data throughput to be maintained even if the interfering radio systems or the physical environment (e.g. multipath fading) renders some RF channels unusable. In the 2.
Page 10 of 36 A8520E24A91 – User’s Manual Release Date 01/23/15 Figure 3 Example of AFH hop sequence (active set in color, trial set in black/gray) The channels correspond to center frequencies as given in Table 3. Table 3 Channel to center frequency Channel 1 2 3 4 5 6 7 8 9 1.3.
A8520E24A91 – User’s Manual Release Date 01/23/15 Page 11 of 36 2. Approvals and Usage The A8520E24A91 has been designed to meet FCC (US), IC (Canada) and ETSI (Europe) regulations. In particular the radio modules have been certified to the following. 2.1. Product Approvals 2.1.1. USA (Federal Communications Commission, FCC) The A8520E24A91 with integrated antenna has been tested to comply with FCC CFR47 Part 15 sub-part C “Intentional Radiators.
Page 12 of 36 2.1.1.2. A8520E24A91 – User’s Manual Release Date 01/23/15 End User Manual The end user manual should include the following statement: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation.
A8520E24A91 – User’s Manual Release Date 01/23/15 Page 13 of 36 From section 3.2 RSS-Gen, Issue 3, December 2010, Modular Approval for Category I Equipment or Category II Equipment: “Modular approval permits the installation of the same module in a host device or multiple host devices without the need to recertify the device. Equipment certification for a modular device may be sought for either Category I equipment or Category II equipment.
Page 14 of 36 A8520E24A91 – User’s Manual Release Date 01/23/15 The label shall be securely affixed to a permanently attached part of the device, in a location where it is visible or easily accessible to the user, and shall not be readily detachable. The label shall be sufficiently durable to remain fully legible and intact on the device in all normal conditions of use throughout the device’s expected lifetime.
A8520E24A91 – User’s Manual Release Date 01/23/15 Page 15 of 36 accomplished by the use of warning labels and by providing users with information concerning minimum separation distances from transmitting structures and proper installation of antennas.
Page 16 of 36 A8520E24A91 – User’s Manual Release Date 01/23/15 A helpful document that can be a starting point in understanding the use of short range devices (SRD) in Europe is the European Radio Communications Committee (ERC) Recommendation 70-03 E, downloadable from the European Radio Communications Office (ERO) http://www.erodocdb.dk/Docs/doc98/official/pdf/REC7003E.PDF.
A8520E24A91 – User’s Manual Release Date 01/23/15 Page 17 of 36 of 8 dBm / 3 kHz), total output power (max of 1W including the antenna gain) and spurious radiation (harmonics and others including the restricted bands) requirements. The A8520E24A91 module has been approved for use up to the max available power level that the module can give (power setting 4), however, the user is encouraged to use minimum power required to establish a link in order to minimize interference. 2.3.2.
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A8520E24A91 – User’s Manual Release Date 01/23/15 Page 19 of 36 3. Electrical Characteristics 3.1. Absolute Maximum Ratings Under no circumstances must the absolute maximum ratings given in Table 4 be violated. Stress exceeding one or more of the limiting values may cause permanent damage to the device. Caution! ESD sensitive device. Precaution should be used when handling the device in order to prevent permanent damage.
Page 20 of 36 3.2. A8520E24A91 – User’s Manual Release Date 01/23/15 Operating Conditions Table 5 Operating conditions Parameter Min Max Unit Supply Voltage (Vdd) 2.2 3.6 V Supply Voltage IOVdd 1.8 3.6 V Temperature Range -40 +85 ˚C 3.3.
A8520E24A91 – User’s Manual Release Date 01/23/15 Page 21 of 36 Pin Type 1 GND Common Ground 2 DNC 3 GND 4 DNC 5 VBAT Description CC85xx Pin Pin Name CC259x Pin Pin Number Table 6 pin-out table, with references to chip pins Do Not Connect. Connecting this pin to anything will significantly affect the performance of the module and may void the end users right, under FCC, to operate the module Common Ground Do Not Connect.
Page 22 of 36 3.4. A8520E24A91 – User’s Manual Release Date 01/23/15 Recommended Layout (dimensions in mm) Figure 5 Recommended PCB layout.
A8520E24A91 – User’s Manual Release Date 01/23/15 Page 23 of 36 Figure 6 Mounting the module in a corner 3.5. Figure 7 Mounting the module along an edge Power Supply Considerations Noise on the power supply line reduces the sensitivity of a receiver and can modulate onto a transmitters signal, both of which causes a degradation of link quality and hence a reduction in range.
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A8520E24A91 – User’s Manual Release Date 01/23/15 Page 25 of 36 4. Mechanical and Process 4.1.
Page 26 of 36 4.2. A8520E24A91 – User’s Manual Release Date 01/23/15 Packaging Details (dimensions in mm) AIR modules are available in Matrix Tray and Tape & Reel packaging for high-volume assembly. Details of packaging provided below: 4.2.1. Matrix Tray Packaging Figure 9 A8520E24A91GM Matrix Tray Packaging Detail (27/Tray) 4.2.2.
A8520E24A91 – User’s Manual Release Date 01/23/15 4.3. Page 27 of 36 Soldering AIR Modules may be mounted either manually (for prototyping or low volume production), or automatically for high-volume production. A no-clean tin/silver/copper (SAC) solder is recommended, however lead-based, no-clean pastes may also be used. CAUTION: AIR Modules are designed for no-clean fluxes only. DO NOT use waterbased fluxes that require aqueous cleaning after solder.
Page 28 of 36 A8520E24A91 – User’s Manual Release Date 01/23/15 4.3.2. Automated Mounting Procedure The AIR module recommended solder reflow profile is based on IPC/JEDEC J-STD-020.
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A8520E24A91 – User’s Manual Release Date 01/23/15 Page 31 of 36 5. Configuration and Programming The integrator of this module into an application must program the module to match both the Codec chip used and the human interface methods employed. To do this the integrator must use the PurePath™ software from TI to configure the module 5.1.
Page 32 of 36 A8520E24A91 – User’s Manual Release Date 01/23/15 Master Radio Page Slave Radio Page Figure 11 PurePath Wireless Configurator window Alternatively the power calibration can be done immediately after programming of each module using the SPI host controller interface, using the CAL_SET_DATA function.
A8520E24A91 – User’s Manual Release Date 01/23/15 Page 33 of 36 Check SWR Proceed only if SWR matches required value (Reset device and Restart programming again) // For each flash page for (int n = 0; n < 31; n++) { // Write page data to the start of the available RAM area SET_ADDR(0x6000, sw); WRITE(0x400, data to be programmed into flash page n , sw); /* While using the image generated by TI- Purepath Wireless Configurator, note that the entire image file generated by PWC-TI is Intel_hex format.
Page 34 of 36 A8520E24A91 – User’s Manual Release Date 01/23/15 2. After sending &H B0 00 on MOSI pin. Wait till MISO pin goes high. Note: Status check/update is done between MISO and CSn pin going high. If this time is not sufficient. This will lead to error in SWR read value. Once BOOT_RESET is successful then switch to normal SPI operation mode. Please refer to the TI CC8520 PurePath documentation for more information.
A8520E24A91 – User’s Manual Release Date 01/23/15 Page 35 of 36 DOCUMENT HISTORY Date 08/08/10 12/01/10 12/13/10 08/09/11 10/14/11 Author Kirkeby Kirkeby Kirkeby Stockwell Sula 10/19/11 12/21/11 Sula Sula 01/31/12 Sula 02/03/12 Sula 02/08/12 02/27/12 03/07/12 Sula Richardson Richardson 03/26/12 01/21/15 Richardson Sula 01/23/15 Sula Change Note No./Notes Initial Draft Initial Release, formatting and content chg. Programming and Tx power setting. Updated fig. 5 sec 4.
Attach distributor contact information here If you have additional questions, need samples, or would like a quote – please email the AIR team at AIR@anaren.com . For a full list of our franchised distributors, please visit our website: http://www.anaren.com/air/ Anaren Microwave, Inc. 6635 Kirkville Road East Syracuse, NY 13057 Tel: +1 315 432 8909 +1 800 411 6596 Fax: +1 315 432 8970 Anaren Microwave (Europe), Inc.
