Aerielle SAM200TR Audio Streaming Module User Manual SAM 200 Manual v0 12j

Aerielle, Inc Audio Streaming Module SAM 200 Manual v0 12j

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SAM200TR User Manual

Users Manual

SAM-200-TR Steaming Audio Module 1 Ver. 0.12j 12/22/2009 PRELIMINARY USER MANUAL SUBJECT TO CHANGE WITHOUT NOTICE Copyright © 2009 Aerielle, LLC All Rights Reserved. SAM-200-TR i2i® Streaming Audio Module DESCRIPTION The SAM-200 is an RF module for digital streaming of CD-quality audio (48KHz, 16-bit stereo) from simple analog inputs and outputs. It is fully self-contained with easy-to-use interface signals and options, to minimize time-to-market for wireless audio applications. Stereo line inputs and line or headphone outputs are available. Inputs have ALC level matching and level/impedance selection for line, instrument, and microphone signals. Audio outputs have mute and volume level control. Internal voltage regulation provides flexible management of power for embedding in existing or new products. Channel selection is available through direct addressing or sequential toggling with a single button/input. Output volume is controllable with simple switches. FEATURES • 2.4GHz Digital CD-Quality Digital Audio • Range 60+ Feet • 8 Consumer Channels + 8 Professional • Coexists with WiFi and Bluetooth • Simple Analog Audio I/O • Simple Control Pins • On-Board Voltage Regulation • ALC Audio Inputs • Headphone or Line Outputs • Microphone and Musical Instrument Inputs • Compatible with i2i Stream® Consumer Products WIRELESS APPLICATIONS • Headphones • Remote Speakers • Musical Instruments • Microphone • Audio for Electronic Gaming • PC Audio Streaming

SAM-200-TR Steaming Audio Module 2 Ver. 0.12j 12/22/2009 PRELIMINARY USER MANUAL SUBJECT TO CHANGE WITHOUT NOTICE Copyright © 2009 Aerielle, LLC All Rights Reserved. PRODUCT VARIANTS Product Variant SAM-200-TR Transceiver with Tx/Rx control line, audio input and output SAM-200-TX Transmitter without Tx/Rx or vol ctrl, audio input only SAM-200-RX Receiver without Tx/Rx or input level sel, audio output only ABSOLUTE MAXIMUM RATINGS Parameter Min Typ Max Unit Supply Voltage, VIN -0.3 -- +13.5 V Voltage range at control pin -0.3 -- VIN + 0.3 V Voltage range at audio pin -0.3 -- VIN + 0.3 V ESD Contact Discharge -2 -- +2 kV Storage temperature range -40 -- +85 °C Operating temperature range -10 -- +60 °C ELECTRICAL CHARACTERISTICS Symbol Parameter Min Typ Max Unit VIN Supply Voltage 3.8 5.0 9.5 V VIH Input Logic Voltage High 2.0 -- 3.6 V VIL Input Logic Voltage Low -- -- 0.8 V ITX Current Consumption, Tx -- 77 -- mA IRX Current Consumption, Rx -- 50 -- mA Bw Occupied Bandwidth 2400 -- 2483.5 MHz PTX Transmission Power 14 16 18 dBm SRX Rx Sensitivity -- -83 -- dBm

SAM-200-TR Steaming Audio Module 3 Ver. 0.12j 12/22/2009 PRELIMINARY USER MANUAL SUBJECT TO CHANGE WITHOUT NOTICE Copyright © 2009 Aerielle, LLC All Rights Reserved. AUDIO CHARACTERISTICS Parameter Value Sample Rate 48Ksps Bit Depth (stereo) 16bits Frequency Response 20Hz – 20KHz +/-3dB Signal-to-Noise Ratio (SNR) >90dB Total Harmonic Distortion (THD) 0.007% @ 1KHz Stereo Separation >75dB Latency (source to destination, constant) 18ms Headphone power output, 32-ohm load (16-ohm load) 15mW (30mW) Line Output Level Selectable over I2C QUICK-CONNECT PINOUT The Quick-Connect port is a row of 2mm-spaced holes (0.75mm dia) suitable for soldered wires or header for quick-and-easy connections for dedicated boards. Input and output pins’ mode and format are customizable on board with solder jumpers, and can be factory-configured. No. Name Tx Rx Xcvr I/O Description 1 VCC T R X PWR +4 to 9V power supply input 2 GND T R X PWR Ground connection 3 AUDIO_LP T X I O Audio In/Out, Left, Headphone or Bal + 4 AUDIO_LM T X I O Audio In/Out, Left, Headphone Gnd or Bal - 5 AUDIO_RP T X I O Audio In/Out, Right, Headphone or Bal + 6 AUDIO_RM T X I O Audio In/Out, Right, Headphone Gnd or Bal - 7 CHSEQ T R X I Sequence the channel sel. on each negative transition 8 VOLUP (I2C_CLK) R X I Volume up on each negative transition or I2C Clock 9 VOLDN (I2C_DAT) R X I Volume down on each negative transition or I2C Data 10 RESET T R X I Reserved, leave open or tie to VCC 11 TEST T R X I Reserved, leave open or tie to VCC 12 GND T R X PWR Ground Connection

SAM-200-TR Steaming Audio Module 4 Ver. 0.12j 12/22/2009 PRELIMINARY USER MANUAL SUBJECT TO CHANGE WITHOUT NOTICE Copyright © 2009 Aerielle, LLC All Rights Reserved. MAIN CONNECTOR PINOUT The module’s main connector is a dual-row pin header located on the bottom of the board, with two rows of 17 pins spaced on a 0.050” grid. No. Name Tx Rx Xcvr I/O Description 1 VCC T R X PWR +4 to 9V power supply input 2 GND T R X PWR Ground connection 3 L_IN T X I Audio input, headphone-level left 4 R_IN T X I Audio input, headphone-level, right 5 LINE_L_IN T X I Audio input, line-level, left (balanced + L) 6 LINE_L_GND T X I Audio input, line-level gnd, left, (balanced – L) 7 LINE_R_IN T X I Audio Input, line-level, right (balanced + R) 8 LINE_R_GND T X I Audio input, line-level gnd, right (balanced – R) 9 GND T R X PWR Ground connection 10 GND T R X PWR Ground connection 11 L_OUT R O Audio output, headphone, left 12 R_OUT R O Audio output, headphone, right 13 LINE_L_OUT R O Audio output, line-level, left (balanced + L) 14 LINE_L_GND R O Audio output, line-level, left, gnd (balanced – L) 15 LINE_R_OUT R O Audio output, line-level, right (balanced + R) 16 LINE_R_OUT R O Audio output, line-level, right, gnd (balanced - R) 17 GND T R X PWR Ground connection 18 GND T R X PWR Ground connection 19 IN_SEL T R X I Audio input select line (0 = headphone, 1 = line/bal) 20 OUT_SEL T R X I Audio output select line (0 = headphone, 1 = line/bal) 21 TX_RX X I Tx/Rx select: 1 = Rx, 0 = Tx (N/U on Tx and Rx models) 22 CH0 T R X I Channel select bit 0 23 CH1 T R X I Channel select bit 1 24 CH2 T R X I Channel select bit 2 25 CHSEQ T R X I Sequence the channel sel. on each negative transition 26 CHSEL R X I Select channel range: 1 = Consumer, 0 = Professional 27 VOLUP R X I Volume up: inc. volume one step each negative transition 28 VOLDN R X I Volume dn: dec. volume one step each negative transition 29 MUTE R X I Mute the output volume when grounded 30 GND T R X PWR Ground connection 31 I2C_CLK T R X I I2C serial interface clock line (extended interface) 32 I2C_DATA T R X I/O I2C serial interface data line (extended interface) 33 TEST T R X I Reserved. 34 RESET T R X I Reserved

SAM-200-TR Steaming Audio Module 5 Ver. 0.12j 12/22/2009 PRELIMINARY USER MANUAL SUBJECT TO CHANGE WITHOUT NOTICE Copyright © 2009 Aerielle, LLC All Rights Reserved. APPLICATION INFORMATION 1. Power Supply The power supply inputs are designed to run off of a variety of batteries. The level must remain above 4.0V at the rated currents or unstable operation will result. Suggested battery types: • 3.8V – 4.2V in one LiIon cell • 4.8V – 7.2V in 4 – 6 NiCd or NiMH cells • 4V – 9V in 4 – 6 Alkaline cells (0.8 – 1.0V end-of-life cell voltage assumption) 2. Audio Inputs The module is designed for three different types of audio inputs. • Headphone-level audio from personal audio players • Line-level audio from standard audio components • Balanced audio from microphones (pre-amplified) or musical/PA equipment The module has two sets of inputs on its main connector. These can be solder-jumper-configured for headphone and line level (default), or headphone and balanced. The quick-connect port can host only one type of input or one type of output, selected by solder jumpers. Headphone, line, and balanced inputs are available on the quick-connect port. On the main connector, the IN_SEL line selects between the two sets of inputs on that connector. Audio Input Selection IN_SEL Audio Input Setting 0 Headphone-level input 1 Line-level or balanced input 3. Audio Outputs Like the inputs, the module is designed for three different types of audio outputs. • Headphone-level audio to earbuds or standard headphones • Line-level audio to standard audio components • Balanced audio to musical/PA equipment The module has two sets of outputs on its main connector. These can be solder-jumper-configured for headphone and line level (default), or headphone and balanced. The quick-connect port can host only one type of input or one type of output, selected by solder jumpers. Headphone, line, and balanced outputs are available at the quick-connect port.

SAM-200-TR Steaming Audio Module 6 Ver. 0.12j 12/22/2009 PRELIMINARY USER MANUAL SUBJECT TO CHANGE WITHOUT NOTICE Copyright © 2009 Aerielle, LLC All Rights Reserved. On the main connector, the OUT_SEL line selects between the two sets of outputs on that connector. Audio Input Selection OUT_SEL Audio Output Setting 0 Headphone-level output 1 Line-level or balanced output 4. I2C Communication The module acts as an I2C slave to support extended functionality when embedded in a product that has microprocessor control. The module maps a number of different registers accessible through the I2C communication. These registers allow setting of parameters that include but go beyond the functions available directly on the pins. Current settings and immediate status may be read back through the registers. Please contact Aerielle for further information. 5. Tx/Rx Selection The Tx/Rx selection pin (TX_RX) is available only on the transceiver version of the module. This pin selects whether the module plays the role of transmitter or receiver. With no connection, the pin is pulled high internally and the unit functions as a receiver. When this pin is pulled to ground, the module functions as a transmitter. On dedicated transmitter or receiver versions of the module, this pin has no function. TX/RX SELECTION TX_RX Module Function 1 Receiver (default) 0 Transmitter 6. Channel Selection The module supports 8 “consumer” channels and 8 “professional” channels, intended for use in musical instruments and other professional audio applications. The division of channel types is primarily to prevent interference with professional audio applications by users of consumer-class devices (wireless headphones, music-sharing platforms) at a public venue. The CHSEL line controls the selection of the class of channels. This line is pulled up internally, and by default (high) selects the consumer class of channels. Strap this line to ground (low) to select the professional class of channels. The CHSEQ line allows simple sequential selection of channels. A very simple product could use this line to select channels by stepping through them (albeit blindly) with a single pushbutton. This type of channel selection is very similar to cordless phones. When you encounter interference on one channel, you push the button once to step to the next channel. When you have a pair of devices (one transmitter, one receiver) and you change the channel on one to avoid interference, you would simply sequence the channel button on the other device until you hear the audio link re-established. (This requires that you

SAM-200-TR Steaming Audio Module 7 Ver. 0.12j 12/22/2009 PRELIMINARY USER MANUAL SUBJECT TO CHANGE WITHOUT NOTICE Copyright © 2009 Aerielle, LLC All Rights Reserved. know what the audio source is playing so you can identify it on the receiver.) This line is pulled up internally, and the channel advances each time it transitions to ground. The input is debounced internally to allow the use of a simple electromechanical pushbutton switch. The CH0, CH1, and CH2 lines provide for direct selection of the channel. Use these lines to select the channel from a microcontroller or when you want to hard-wire a particular channel other than the default. These lines are pulled up internally so they must be pulled down to select. See the following table that shows active-low binary selection. In this way, Channel 0 (all lines high) is the default. Channel Selection Class Channel Address CHSEL CH0 CH1 CH2 Channel Color* X 1 1 1 Channel 1 (default) Red X 1 1 0 Channel 2 Orange X 1 0 1 Channel 3 Yellow X 1 0 0 Channel 4 Green X 0 1 1 Channel 5 Blue X 0 1 0 Channel 6 Violet X 0 0 1 Channel 7 White X 0 0 0 Channel 8 undef. 1 X X X Consumer Class 0 X X X Professional Class *The channel colors refer to those used on the i2i Stream® consumer device. 7. Volume Control/Mute On the transceiver or dedicated receiver version of the module, there are simple function pins for volume control and mute. These control the output volume in the headphone-drive mode. • VOLUP Transition to ground increases volume at headphone outputs by one step. • VOLDN Transition to ground decreases volume at headphone outputs by one step. • MUTE Ground mutes headphone output and floating or high-level input un-mutes it.

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