Avnera AVMD7F11A WIRELESS AUDIO MODULE User Manual

Avnera Corporation WIRELESS AUDIO MODULE Users Manual

Users Manual

AVNERA CORPORATION | 16505 NW BETHANY COURT SUITE 100 | BEAVERTON, OREGON 97006, U.S.A. | MAIN +1.503.718.4100 | FAX +1.503.718.4101 | WWW.AVNERA.COM AVNERA PROPRIETARY & CONFIDENTIAL | PROVIDED UNDER NDA General Description Every consumer wants to be free from wires, but system designers could never find a low-cost, high-quality, easy-to-use wireless audio solution for speakers, microphones, headphones and headsets on the market. Avnera’s proprietary wireless system changes the game by taking a new approach to wireless audio. The wireless protocol was designed from the ground up and delivers uncompressed stereo audio over the air without interference problems. Avnera’s wireless modules offer a low-touch, easy-to-integrate wireless audio solution and enable fast time to market by already solving the problem associated with FCC, antenna tuning and board optimization. Modules based on Avnera’s AV72xx silicon (also known as AudioMagic 1.5G) provide breakthrough wireless audio functionality with point to multipoint transport of uncompressed stereo PCM audio data from a single AVMD7211 sender and a total of up to three simultaneous AVMD7212 listeners. Applications 9 Wireless audio transmitter for portable audio player 9 Wireless audio distribution hub for surround speakers Ordering Options AVMD7211-04-ACNA: Analog-in, normal range AVMD7211-04-ACPA: Analog-in, extended range Features 9 Uncompressed audio, point to multipoint capable (1 to 3) 9 Audio path SNR: Stereo 84 dB SNR, 48 kHz sampling rate 9 Support for 14m (normal) and 30m (extended) range 9 Frequency range: 2.4 GHz ISM band, continuous dynamic frequency selection 9 Forward error correction coding, error detection, and audio-specific error concealment 9 Diversity antennas for multipath and fading mitigation 9 Connector: Edge contact via array supports surface mount 9 Auto-search/synch and dynamic channel selection 9 Low, fixed latency suitable for video lip-synch 9 Support for 16, 20, 24, and 32 bit PCM words at 16, 22.05, 24, 32, 44.1, 48, and 96 kHz 9 General purpose over-the-air (OTA) serial interface: 9 2 kbps, bi-directional, full duplex 9 Support for meta-data and remote control commands AudioMagic™ Module Datasheet Point-to-Multipoint AVMD7211-04 Listener for Wireless Audio Systems, based on Avnera’s AV7211 IC
AudioMagic AVMD7211-04 Module Datasheet PRELIMINARY v0p16 CONTENTS SUBJECT TO CHANGE WITHOUT NOTICE 2 AVNERA PROPRIETARY & CONFIDENTIAL 1 Table of Contents General Description ______________________________________________________________ 1 Applications_____________________________________________________________________ 1 Ordering Options_________________________________________________________________ 1 Features________________________________________________________________________ 1 1 Table of Contents_____________________________________________________________ 2 2 Lists of Figures and Tables_____________________________________________________ 3 3 AVMD7211 Functional Block Diagrams__________________________________________ 4 4 AVMD7211 Pin Information ___________________________________________________ 6 5 AVMD7211 Mechanical Dimensions _____________________________________________ 7 6 Electrical Specifications _______________________________________________________ 8 6.1 Absolute Maximum Ratings _____________________________________________________________ 8 6.2 Recommended Operating Range__________________________________________________________ 8 6.3 Electrical Characteristics________________________________________________________________ 9 7 Application information ______________________________________________________ 10 7.1 Mechanical requirements_______________________________________________________________ 10 7.2 Application circuit ____________________________________________________________________ 14 7.3 EMI considerations____________________________________________________________________ 15 8 FCC and Industry Canada certification information _______________________________ 16 8.1 Label Information_____________________________________________________________________ 16 8.2 Equipment labeling requirements________________________________________________________ 16 8.3 User manual labeling requirements ______________________________________________________ 17 9 Ordering Information ________________________________________________________ 18 10 Contact Information and Legal Disclaimer _____________________________________ 19
AudioMagic AVMD7211-04 Module Datasheet PRELIMINARY v0p16 CONTENTS SUBJECT TO CHANGE WITHOUT NOTICE 3 AVNERA PROPRIETARY & CONFIDENTIAL 2 Lists of Figures and Tables Table 1: AVMD7211-04 Module Block Diagram Description______________________________________________ 5 Table 2: AVMD7211-04 Pin Information _____________________________________________________________ 6 Table 3; AVMD7211-04 Electrical Characteristics______________________________________________________ 9 Table 4: AVMD7211 Module Ordering Information ____________________________________________________ 18 Figure 1: AVMD7211 Module Block Diagram without RF Power Amplifier (normal range)............................................. 4 Figure 2: AVMD7211 Module Block Diagram with RF Power Amplifier (extended range)............................................... 4 Figure 3: AVMD7211 mechanical dimensions .................................................................................................................... 7 Figure 4: Main board ground plane guidelines in the vicinity of the module.................................................................... 10 Figure 5: Module mounting requirements on the main board........................................................................................... 11 Figure 6: Keep out requirements around the antenna of the module................................................................................. 12 Figure 7: Enclosure spacing requirements around the antenna end of the module........................................................... 13 Figure 8: AVMD7211 application schematic..................................................................................................................... 14 Figure 9: Example of sub-1GHz EMI suppression using in-line ferrite chips................................................................... 15 Figure 9: Module pictures (not shown actual size)............................................................................................................ 18
AudioMagic AVMD7211-04 Module Datasheet PRELIMINARY v0p16 CONTENTS SUBJECT TO CHANGE WITHOUT NOTICE 4 AVNERA PROPRIETARY & CONFIDENTIAL 3 AVMD7211 Functional Block Diagrams When paired with an AV7212-based companion receiving device, the AVMD7211 modules support group mode scenarios in which one sender can transmit audio to up to three listener modules simultaneously. The nominal output power without PA is 0 dBm (normal range) and with a PA is +10 dBm (extended range) into the antennas. Figure 1: AVMD7211 Module Block Diagram without RF Power Amplifier (normal range) Figure 2: AVMD7211 Module Block Diagram with RF Power Amplifier (extended range)
AudioMagic AVMD7211-04 Module Datasheet PRELIMINARY v0p16 CONTENTS SUBJECT TO CHANGE WITHOUT NOTICE 5 AVNERA PROPRIETARY & CONFIDENTIAL Table 1: AVMD7211-04 Module Block Diagram Description Interface Description SPI The AVMD7111’s SPI interface is used to allow an external host to control the AV7111 sender IC and to facilitate testing of the module. GPIO/ LED The GPIO and LED lines allow buttons and LEDs to be connected to the AVMD7111 to allow the user to control the AudioMagic™ system and communicate the system’s state to the user. AINL COM AINR These three pins form the module’s analog audio input. The COM pin is tied to analog ground on the module and should not be connected to ground in the host system. PWR This pin connects directly to the “PWR” pin on the AV7111 IC and is used to signal the module to power on and off. V3.3 VA VCCPA These pins provide power to various elements of the AVMD7111. The V3.3 pin, connected to the AV7111 IC’s VBATT pin, supplies power to the AV7111. The VA pin supplies power to the ADC. On the PA-enabled version of the module, VCCPA supplies power to the RF power amplifier. In normal operation, all three pins are connected to the 3.3V (nom) main supply. VDDIO The VDDIO pin is connected to the VDDIO regulator bypass pin on the AV7111. The pin can be used to indicate when the AV7111 IC is powered on. Note that VDDIO must NOT be used to power an external device, nor should it be driven by an external supply.
AudioMagic AVMD7211-04 Module Datasheet PRELIMINARY v0p16 CONTENTS SUBJECT TO CHANGE WITHOUT NOTICE 6 AVNERA PROPRIETARY & CONFIDENTIAL 4 AVMD7211 Pin Information Table 2: AVMD7211-04 Pin Information Pin Number Pin Name Type Pin Description 1 VCCPA Analog Power RF power amplifier supply connection 2 AGND Ground Analog section ground 3 V3.3 Analog Power 3.3V power supply connection 4 AGND Ground Analog section ground 5 VA Analog Power ADC power supply (3.3 V) 6 AINL Analog Input Left-channel audio input. 7 COM Analog Input Analog common connection 8 AINR Analog Input Right-channel audio input 9 PWR Analog Input Power switch input 10 LED2 Digital Output LED drive line 11 LED1 Digital Output LED drive line 12 LED0 Digital Output LED drive line 13 NC NC NC 14 NC NC NC 15 NC NC NC 16 GPIO6 Digital I/O General-Purpose I/O 17 GPIO5 Digital I/O General-Purpose I/O 18 DGND Ground Digital section ground 19 VDDIO Digital Power 3.3V regulated voltage 20 GPIO4 Digital I/O General-Purpose I/O 21 GPIO3 Digital I/O General-Purpose I/O 22 GPIO2 Digital I/O General-Purpose I/O 23 GPIO1 Digital I/O General-Purpose I/O 24 SDO Digital Output SPI data output 25 SDI Digital Input SPI data input 26 SSB Digital Input SPI slave select, active low 27 SCLK Digital Input SPI data clock input 28 AGND Ground Analog section ground 29 AGND Ground Analog section ground 30 AGND Ground Analog section ground
AudioMagic AVMD7211-04 Module Datasheet PRELIMINARY v0p16 CONTENTS SUBJECT TO CHANGE WITHOUT NOTICE 7 AVNERA PROPRIETARY & CONFIDENTIAL 5 AVMD7211 Mechanical Dimensions Figure 3: AVMD7211 mechanical dimensions
AudioMagic AVMD7211-04 Module Datasheet PRELIMINARY v0p16 CONTENTS SUBJECT TO CHANGE WITHOUT NOTICE 8 AVNERA PROPRIETARY & CONFIDENTIAL 6 Electrical Specifications 6.1 Absolute Maximum Ratings Absolute Maximum Ratings (AMR) are stress ratings only. AMR corresponds to the maximum value that can be applied without leading to instantaneous or very short-term unrecoverable hard failure (destructive breakdown). Stresses beyond those listed under AMR may cause permanent damage to the device. Functional operation of the device at these or any other conditions beyond those indicated under “Recommended Operating Range” is not implied. Exposure to absolute-maximum-rated conditions for extended periods may adversely affect device reliability. Device functional operating limits and guaranteed performance specifications are given under Electrical Characteristics at the test conditions specified. CONDITION MIN MAX VA Supply Voltage Input -0.3V 6V V3.3 Supply Voltage Input -0.3V 4V VCCPA Supply Voltage Input 0 6V Input Voltage Range – Digital Inputs -0.3V VVDDIO + 0.3V Input Voltage Range – Analog Inputs -0.3V VA+0.3V Operating Temperature -40ºC +85ºC Storage Temperature -40ºC +100ºC Static Discharge Voltage – HBM * 1000V *Terminology: HBM => ESD human body model 6.2 Recommended Operating Range PARAMETER MIN TYP MAX UNIT VA pin voltage 3.0 3.5 V V3.3 pin voltage 3.0 3.5 V VCCPA pin voltage 3.0 3.6 V Ambient Temperature (TA) -20 70 ºC
AudioMagic AVMD7211-04 Module Datasheet PRELIMINARY v0p16 CONTENTS SUBJECT TO CHANGE WITHOUT NOTICE 9 AVNERA PROPRIETARY & CONFIDENTIAL 6.3 Electrical Characteristics Test Conditions: TA=+25ºC Table 3; AVMD7211-04 Electrical Characteristics PARAMETER CONDITIONS MIN TYP MAX UNIT RF Frequency Range 2405 2477 MHz Audio Input Voltage VA is the level on the ADC power pin 0.51*VA 0.57*VA VPK Audio Input Pin Impedance 9.78 10.18 kΩ Audio SNR 90 dB Audio THD+N -74 dB Audio Input Impedance 9k ohms Normal range 14 m Range (LOS)1 Extended 30 m V3.3 (Active Audio Mode) 63 mA Current consumption (normal range) VCCPA 0 mA V3.3 (Active Audio Mode) 63 mA Current consumption (extended range) VCCPA 110 mA 1 LOS Line of sight
AudioMagic AVMD7211-04 Module Datasheet PRELIMINARY v0p16 CONTENTS SUBJECT TO CHANGE WITHOUT NOTICE 10 AVNERA PROPRIETARY & CONFIDENTIAL 7 Application information 7.1 Mechanical requirements The AVMD7211 module is designed to be surface mounted directly to a supporting system board. The antennas are tuned to the correct impedance and band center in the presence of the module circuit board, without any other close-by materials. As such, in the final application the module must be positioned in such a way that all foreign material, including other circuit boards, ground plane, other metal structures, and enclosure components, must be kept away from the antennas. The diagrams in the figures below provide guidance for mounting the module as well as configuring the system board in the vicinity of the module itself. Figure 4: Main board ground plane guidelines in the vicinity of the module
AudioMagic AVMD7211-04 Module Datasheet PRELIMINARY v0p16 CONTENTS SUBJECT TO CHANGE WITHOUT NOTICE 11 AVNERA PROPRIETARY & CONFIDENTIAL Figure 5: Module mounting requirements on the main board
AudioMagic AVMD7211-04 Module Datasheet PRELIMINARY v0p16 CONTENTS SUBJECT TO CHANGE WITHOUT NOTICE 12 AVNERA PROPRIETARY & CONFIDENTIAL Figure 6: Keep out requirements around the antenna of the module
AudioMagic AVMD7211-04 Module Datasheet PRELIMINARY v0p16 CONTENTS SUBJECT TO CHANGE WITHOUT NOTICE 13 AVNERA PROPRIETARY & CONFIDENTIAL Figure 7: Enclosure spacing requirements around the antenna end of the module
AudioMagic AVMD7211-04 Module Datasheet PRELIMINARY v0p16 CONTENTS SUBJECT TO CHANGE WITHOUT NOTICE 14 AVNERA PROPRIETARY & CONFIDENTIAL 7.2 Application circuit The schematic shown below represents a generic application, showing how the AVMD7212 would be connected to the outside world for the purposes of control, power supply, and analog output. TBD Figure 8: AVMD7211 application schematic
AudioMagic AVMD7211-04 Module Datasheet PRELIMINARY v0p16 CONTENTS SUBJECT TO CHANGE WITHOUT NOTICE 15 AVNERA PROPRIETARY & CONFIDENTIAL 7.3 EMI considerations Applications employing long signal lines to connect to the module are under increased risk of EMI. This can manifest as buzzing noise or spurious emissions impacting FCC certification. System designers should avoid: • Long cables connecting the modules to headphones or speakers • Long power cords connecting the modules to AC wall adapters Adding ferrite chips close to the edge of the modules can reduce the impact of signal coupling and sub-1GHz spurious emissions (see Figure below). This mitigation method may not be necessary when connecting the analog inputs directly to a circuitry located on the main board using short wires or PCB traces. Note that connecting the analog inputs directly to the outside world through a jack or other terminals re-introduces the risk of spurious emissions. Figure 9: Example of sub-1GHz EMI suppression using in-line ferrite chips The ferrite chips should be located close to the edge of the module. Note: Do not connect analog input COM pin to external ground. The COM line is carefully connected to ground inside the module. Connecting COM to an external ground may create a ground loop that can lead to either or both unwanted noise pickup or radiation of spurious signals.
AudioMagic AVMD7211-04 Module Datasheet PRELIMINARY v0p16 CONTENTS SUBJECT TO CHANGE WITHOUT NOTICE 16 AVNERA PROPRIETARY & CONFIDENTIAL 8 FCC and Industry Canada certification information 8.1 Label Information The AVMD7211 family of modules has passed the requirements set by the US Federal Communications Commission (Part 15) and Industry Canada (RSS-Gen, Issue 2, June 2006 and RSS-210e) for certification as modular intentional radiators. The certification identification numbers are as follows: US FCC ID: V3CAVMD7F11A Industry Canada (IC): 7853A-AVMD7F11A Avnera makes the following representations: This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, (2) This device must accept any interference received, including interference that may cause undesired operation. Per FCC regulation 47 CFR 15.21: Changes or modifications not expressly approved by Avnera, as the party responsible for compliance, can void the user’s authority to operate the equipment using AVMD7211 modules. 8.2 Equipment labeling requirements The statement shown below, or its equivalent, must appear on the external label of every piece of equipment that contains an AVMD7211 module. If the size of the final equipment is too small to support such a label, the statement described in must appear in the user manual for that equipment. Contains FCC ID V3CAVMD7F11A IC: 7853A-AVMD7F11A This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference (2) This device must accept any interference received, including interference that may cause undesired operation
AudioMagic AVMD7211-04 Module Datasheet PRELIMINARY v0p16 CONTENTS SUBJECT TO CHANGE WITHOUT NOTICE 17 AVNERA PROPRIETARY & CONFIDENTIAL 8.3 User manual labeling requirements The statements shown below, or their equivalents, must appear in the user manual for equipment containing AVMD7211 modules: Contains FCC ID V3CAVMD7F11A IC: 7853A-AVMD7F11A This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference (2) This device must accept any interference received, including interference that may cause undesired operation Per FCC regulation 47 CFR 15.21: Changes or modifications not expressly approved by the party responsible for compliance could void the user’s authority to operate the equipment.
AudioMagic AVMD7211-04 Module Datasheet PRELIMINARY v0p16 CONTENTS SUBJECT TO CHANGE WITHOUT NOTICE 18 AVNERA PROPRIETARY & CONFIDENTIAL 9 Ordering Information Table 4: AVMD7211 Module Ordering Information Module Part Number Option Code Description AVMD7211-04 ACNA Analog out, enables surface-mount, normal range, integrated antennas AVMD7211-04 ACPA Analog out, enables surface-mount, extended range, integrated antennas Figure 9: Module pictures (not shown actual size) 0dBm version (no RF PA) +10dBm version (with RF PA)
AudioMagic AVMD7211-04 Module Datasheet PRELIMINARY v0p16 CONTENTS SUBJECT TO CHANGE WITHOUT NOTICE 19 AVNERA PROPRIETARY & CONFIDENTIAL 10 Contact Information and Legal Disclaimer Avnera Corporation 16505 Bethany Court, Suite 100 Beaverton, Oregon 97006 U.S.A. Main: +1.503.718.4100 Fax: +1.503.718.4101 www.avnera.com Avnera Corporation reserves the right to make changes without notice to the product to improve function, reliability, or performance. Avnera Corporation does not assume any liability arising from the application or use of the products or circuits described herein.

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