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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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, Lef
t, 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 e
ach 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 d
ow
n
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
i
nput
,
headphone
-
level
l
eft
4
R_IN
T X
I
Audio
i
nput
,
headphone
-
level,
r
ight
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
Groun
d connection
1
1
L_
OUT
R
O
Audio
o
utput
,
headphone,
l
eft
1
2
R_
OUT
R
O
Audio
o
utput
,
headphone,
r
ight
1
3
LINE_L_OUT
R
O
Audio output,
line
-
level,
left
(balanced + L)
1
4
LINE_L_GND
R
O
Audio output, line
-
level, left, gnd (balanced
–
L)
1
5
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 = lin
e/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)
2
2
CH0
T R X
I
Channel select bit 0
2
3
CH1
T R X
I
Channel select bit 1
2
4
CH2
T R X
I
Channel select
bit 2
2
5
CHSEQ
T R X
I
Sequence the channel sel. on each negative transition
2
6
CHSEL
R X
I
Select channel range: 1 = Consumer, 0 = Professional
2
7
VOLUP
R X
I
Volume up: inc. volume one step each negative transition
2
8
VOLDN
R X
I
Volume dn: dec. volu
me 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 (ext
ended interface)
3
3
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.
SAM-200-TR Steaming Audio Module 8 Ver. 0.12j 12/22/2009
PRELIMINARY USER MANUAL SUBJECT TO CHANGE WITHOUT NOTICE
Copyright © 2009 Aerielle, LLC All Rights Reserved.
8. Regulatory Information
This module has been certified to meet the requirements of US FCC Part 15 regulations. This certification
applies only to the RKV-SAM200TR module itself, and not to any circuitry in a host device. If you embed
this module into your product, it is your responsibility to meet the regulatory requirements of any
markets in which your product will be sold. It is also a requirement that the phrase “Contains FCC ID:
RKV-SAM200TR” appear on either your product’s exterior FCC label (if required), or on an exterior
product label if no FCC label is required.
CONTACT INFORMATION
Copyright © 2008, 2009 Aerielle, LLC. All Rights Reserved.
The Aerielle logo, i2i logo, Aerielle, i2i and “i2i Stream” are registered trademarks of Aerielle, LLC. and Aerielle Technologies, Inc.
The information in this document is provided “as is” without any warranty of any kind, express or implied, including warranties of
non-infringement of intellectual property, of merchantability, or fitness for any particular purpose. In no event will Aerielle, Inc.,
Aerielle Technologies, Inc., any of its officers or employees, any of its affiliate companies, and/or any of its suppliers be liable for
any damages whatsoever arising out of the use or inability to use the information or materials in this document. Furthermore,
Aerielle, Inc. and Aerielle Technologies, Inc. do not warrant the accuracy or completeness of information, text, graphics, or other
items contained within this document. Aerielle, Inc. and/or Aerielle Technologies, Inc. may make changes to this document or to
the products described herein at any time without notice.
Global Headquarters
Aerielle, LLC
190 S. Whisman Road, Bldg. B
Mountain View, CA 94041
USA
(650) 967-4047
(413) 581-6020 FAX
www.aerielle.com
www.i2igear.com