Samsung Electronics Co WSN720S Audio Transceiver User Manual

Samsung Electronics Co Ltd Audio Transceiver

User Manual

WSN720S
Version 1.0
Samsung Electronics
page 1 of 9
User Manual
1. Product Description
The WSN720S module is a wireless audio module based on the Microchip DARR83. This module can used to
build an uncompressed wireless digital audio transceiver operating in the 2.4GHz, 5.2GHz and 5.8GHz bands.
The wireless audio link supports up to two stereo audio streams and comes together with additional features
such as: data encryption, pairing functionality, bi-directional control data messages, low power audio snooze
mode, WLAN detection and Automatic Frequency Allocation. The DARR83 chip itself provides the basic
functions of Audio Processing and buffering, Data Link Layer and Physical Layer. The WSN720S module
integrates all functionality for a wireless digital and analog audio connection, comprising the below features:
DARR83 Wireless Audio Processor
2.4GHz/ 5.2GHz/ 5.8 GHz RF Transceiver
Embedded Antennas – dual antenna
One TX transmitter and antenna diversity receiver (not simultaneous TX transmission)
Digital audio interfaces (I2S)
Integrated 24 bit stereo Audio DAC + Headphone AMP
Integrated 16 bit Audio ADC + Microphone AMP
Built-in SPI interface Flash
24 pins interface connector for power, audio output, control interface and GPIOs
Regulated 5V supply
2. Functions & Features
High Quality Audio
Up to four stereo audio channels, fully bidirectional, up to 24-bit/96 kbps uncompressed audio
Low latency<20ms for real-time audio and lip sync
Low latency compression algorithm – optimized for voice applications, headphones
Inter-speaker synchronization; Low-jitter audio clock sync
Programmable digital audio gain
Networking and Connectivity
22Mbps Bandwidth in 2.4G, 5.2GHz and 5.8 GHz Bands
In-room or multi-room network topology
Point-to-Point and Point-to-Multipoint
Bidirectional data channel (100 kbps)
Simple Pairing and Association Function
4 I2S Data pins, each provided with their own pair of BCK/LRCK signals or stereo S/PDIF
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input/output
Master and Slave I2C bus for external control functions
Coexistence and Robustness
Enhanced robustness against both in and out of band interferers like: WiFi and cordless phones
Coexistence with 802.11a, b, g and n
Automatic receiver antenna diversity minimizes fading and multi-path effects
Link quality monitoring
Soft audio muting under poor link circumstances
Power Management
Low power consumption
Automatic RF output power control
Power down Duty Cycle mode: If no link established, modules (both TX and RX) will enter power
down mode
Integrated 8052 MCU
The DARR83 integrates an 8052 MCU. This includes the following features:
45 KByte Code RAM
8 KByte Data RAM
4 Timer/Counters
UART
Digital Audio Clock Synchronization
The digital audio clock synchronization is an additional more cost effective method for synchronization of
audio sample on the receiving side with respect to the transmitted audio samples. The digital clock
synchronization feature works for output audio sample rates of 96 and 48kbps.
Sample Rate Converter (SRC) + Sample Rate Detector
The SRC can handle the following input sample rates [Ksps]:
44.1
48
96
192(using I2S in slave mode)
WSN720S
Version 1.0
Samsung Electronics
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3. Product Specification
Product Form Factor
Module Size (mm): 26.0 (W) X 60.0 (L) X 3.3 (H)
PCB size (mm): 26.0 (W) X 60.0 (L) X 1.1 (H)
Shield can (mm): 23.3 (W) X 23.0 (L) X 1.7(H)
Antenna Type : Dual- PCB Printed Antenna
Operating Contions
Symbol
Parameter
Min
Typ.
Max
Unit
V dc
Supply Voltage
4.5
5.0
5.5
V
I dc
Supply current
-
-
450
mA
Temp
Operating Temperature
-20
25
50
℃
RF & Audio Characteristics
Parameter
Min
Typ.
Max
Unit
Modulation
QPSK
TX/RX operating
1 TX transmit /
RX antenna diversity
Bandwidth
22
MHz
RF Band (channel)
2.4GHz (low/mid/high)
2412 (1)
2438 (2)
2464 (3)
MHz
5.2GHz (low/mid/high)
5180 (4)
5210 (5)
5240 (6)
5.8GHz (low/mid/high)
5736 (7)
5762 (8)
5814 (9)
TX Average RF Output Power
(Typical: avg. /peak, TA =
25 °C )
2.4GHz
13.0
15.0
17.0
dBm
5.2GHz
12.0
14.0
16.0
5.8GHz
6.0
8.0
10.0
RX Sensitivity
-82
dBm
Audio Latency
20
ms
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Samsung Electronics
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Audio Bit Resolution
24
bit
Audio Sampling Rate
48
Kbps
Antenna Characteristics
PARAMETER
ANTENNA
MIN
TYP
MAX
UNIT
Frequency Range
2400
2480
MHz
5150
5250
5725
5850
Return Loss
ANT-A
-13
dB
-8
-13
ANT-B
-13
-8
-15
Peak Gain
ANT-A
0.8
dBi
3.7
4.4
ANT-B
2.5
4.3
4.2
Average Gain
ANT-A
-2.6
dBi
-0.8
-1.0
ANT-B
-1.7
-0.8
-1.2
Efficiency
ANT-A
55
%
83
80
ANT-B
67
84
76
Impedance
50
Ω
WSN720S
Version 1.0
Samsung Electronics
page 5 of 9
4. I/O Pin Descriptions
Pin #
Pin Name
TX Module
RX Module
I/O
Function Description
I/O
Function Description
1
VDD
PWR
Regulated 4.5V to 5.5V input
PWR
Regulated 4.5V to 5.5V input
2
VDD
PWR
Regulated 4.5V to 5.5V input
PWR
Regulated 4.5V to 5.5V input
3
PWM RST#
O
4
MUTE
O
Mute audio output
5
IRQ / PWR_CTRL
O
Host MCU Interrupt
O
SMPS stand-by mode (Active High)
6
RESET#
I
Module reset from Host MCU,
Internal Pull-Up
I
Module reset from Host MCU,
Internal Pull-Up
7
I2C_SCL_S
I
I2C Clock Input from Host MCU,
(S_MISO)
I
Not use (Open)
8
I2C_SDA_S
I/O
I2C Data In/Output to Host
MCU ,(S_MOSI)
I/O
Not use (Open)
9
I2C_SCL_M
Not use (Open)
O
I2C Clock Output for AMP IC
10
I2C_SDA_M
Not use (Open)
I/O
I2C DATA for AMP IC
11
MCLK
O
This port must be used for I2S output
12
GND
GND
Ground
-
Ground
13
BCK
I
I2S bit clock input from Host system
O
I2S bit clock input from Host System
14
LRCK
I
I2S Data window clock input from
Host system
O
I2S Data window clock input from Host
system
15
DAT_W
I
I2S DATA – Rear L/R
O
I2S DATA
16
DAT_X
I
I2S DATA input from host system
(Subwoofer)
O
I2S DATA input from Host system
(Subwoofer)
17
MON_TXD (UART_TXD)
O
UART Debug monitor
O
UART Debug monitor
18
DAT_Y / FW_SEL
I
I2S DATA – Rear Top L/R
I
FW Select ( Woofer or Rear)
19
IR_RST#
O
AMP Reset
20
ID SET#
I
ID Set Button
21
RED LED
I/O
RED LED Control & Rear L/R detect option
22
BLUE LED (UART_RXD)
O
Blue LED Control
23
IR_SD# (HW_MUTE)
I
Detect IR Amp Shutdown
24
GND
GND
Ground
GND
Ground
#1
#24
WSN720S
Version 1.0
Samsung Electronics
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5. Label
TX Module Label
RX Module Label
WSN720S
Version 1.0
Samsung Electronics
page 7 of 9
6. Notice
FCC Statement
This device complies with Part 15 of FCC Rules, Operation is Subject to following two conditions:
(1) This device may not cause harmful interference, and
(2) This device must accept any interference received including interference that cause undesired operation.
Caution: Any changes or modifications to the equipment not expressly approved by the party responsible for
compliance could void user s authority to operate the equipment.
This equipment has been tested and found to comply within 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.
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 into an outlet on a different circuit from that to which the receiver is connected
• Consult the dealer or an experienced radio/TV technician for help.
This device and its antenna(s) must not be co-located or operation in conjuction with any other antenna or transmitter.
This device is going to be operated in 5.15~5.25GHz frequency range, it is restricted in indoor environment only
IMPORTANT NOTE:
FCC Radiation Exposure Statement;
This appliance and its antenna must not be co-located or operation in conjunction with any other antenna or transmitter.
A minimum separation distance of 20 ㎝ must be maintained between the antenna and the person for this appliance to
satisfy the RF exposure requirements.
IMPORTANT NOTE:
This module is intended for OEM integrator. The OEM integrator is still responsible for the FCC compliance
requirement of the end product, which integrates this module.
WSN720S
Version 1.0
Samsung Electronics
page 8 of 9
IC Statement
20cm minimum distance has to be able to be maintained between the antenna and the users for the host this module is
integrated into. Under such configuration, the FCC Part 2.1091 radiation exposure limits set forth for an population/
uncontrolled environment can be satisfied.
Any changes or modifications not expressly approved by the manufacturer could void the user's authority to operate this
equipment.
That separate approval is required for all other operating configurations, including portable configurations with respect
to part 2.1093 and different antenna configurations.
USER MANUAL OF THE END PRODUCT:
In the users manual of the end of product, the end user has to be informed to keep at least 20cm separation with the
antenna while this end product is installed and operated.
The end user has to be informed that the FCC radio-frequency exposure guidelines for an uncontrolled environment can
be satisfied. The end user has to also be informed that any changes or modifications not expressly approved by the
manufacturer could void the user’s authority to operate this equipment.
If the size of the end product is smaller than 8x10cm, then additional FCC part15.19statement is required to be available
in the users manual; This device complies with Part15 of FCC rules.
LABEL OF THE END PRODUCT:
The final end product must be labeled in a visible area with the following " Contains FCC ID: A3LWSN720S ". If the
size of the end product is larger than 8x10cm, then the following FCC part 15.19 statement has to also be available on
the label: This device complies with Part 15 of 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 Class B digital apparatus complies with Canadian ICES-003.
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.
Cet appareil numérique de la classe B est conforme á la norme NMB-003 du Canada.
WSN720S
Version 1.0
Samsung Electronics
page 9 of 9
This device and its antenna(s) must not be co-located or operation in conjuction with any other antenna or transmitter.
The device could automatically discontinue transmission in case of absence of information to transmit, or operational
failure.Note that this is not intended to prohibit transmission of control or signaling information or the use of repetitive
codes where required by the technology.
The device for the band 5150-5250 MHz is only for indoor usage to reduce potential for harmful interference to co-
channel mobile satellite systems.
IMPORTANT NOTE:
IC Radiation Exposure Statement:
This equipment complies with IC RSS-102 radiation exposure limits set forth for an uncontrolled environment.
This equipment should be installed and operated with minimum distance 20cm between the radiator & your body
IMPORTANT NOTE:
This module is intended for OEM integrator. The OEM integrator is still responsible for the IC compliance requirement
of the end product, which integrates this module.
20cm minimum distance has to be able to be maintained between the antenna and the users for the host this module is
integrated into. Under such configuration, the IC RSS-102 radiation exposure limits set forth for an population/
uncontrolled environment can be satisfied.
Any changes or modifications not expressly approved by the manufacturer could void the user's authority to operate this
equipment.
USERS MANUAL OF THE END PRODUCT:
In the users manual of the end product, the end user has to be informed to keep at least 20cm separation with the
antenna while this end product is installed and operated. The end user has to be informed that the IC radio-frequency
exposure guidelines for an uncontrolled environment can be satisfied. The end user has to also be informed that any
changes or modifications not expressly approved by the manufacturer could void the user's authority to operate this
equipment. IC statement is required to be available in the users manual: This Class B digital apparatus complies with
Canadian ICES-003.
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.
LABEL OF THE END PRODUCT:
The final end product must be labeled in a visible area with the following " Contains IC : 649E-WSN720S ".

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