Libre Wireless Technologies LS5BVD-N11S WiFi Media Streaming Module User Manual
Libre Wireless Technologies Inc. WiFi Media Streaming Module
User manual
Libre Wireless Technologies © 2017
Libre Confidential
Low Cost Integrated Voice/Audio Module
Product Data Sheet
Module: LS5BV-N11S
Rev: 0.2
LS5BV-N11S
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1. Introduction
Libre Wireless, LS5BV-N11S is a voice enabled network media module which includes a
580 MHz MIPS24K CPU core, 64MB of DDR2 DRAM memory and 16MB of Serial Flash, an
802.11n compliant 1T1R MAC/BBP/PA/RF, single port 10/100 Ethernet MDI interface,
Voice processing DSP and a USB Host.
LS5BV-N11S provides a convenient and simple voice activated method for discovering
and controlling devices, and cloud interfaces. LS5BV-N11S contains Integrated DSP for
efficient voice trigger, speech recognition and high-speed audio processing. Provides
Non-stationary and stationary noise reduction for both transmit and receive sides, and it
supports Acoustic Echo Cancellation, Barge-in, Flexible Listening Enhancement, Voice
equalizers.
The LS5BV-N11S, has very few external components required for 2.4GHz 11n wireless
products. The LS5BV-N11S employs Libre Wireless’s 2nd generation 11n technologies for
longer range and better throughput. The embedded high performance CPU can process
advanced applications effortlessly, such as Wi-Fi data processing without overloading the
host processor. In addition, the LS5BV-N11S has rich hardware interfaces (SPI/ I2S/ I2C/
UART/ USB) to enable many possible applications.
LS5BV-N11S devices can be optimized for Smart Home control, Security/Surveillance,
Voice Control Devices, Intercom/PA systems, Music Streaming, Outdoor/Recreational,
Low Power Applications.
Libre solutions enables Brands/ODM’s to take advantage of DDMS and unique Libre
capabilities while delivering voice control, IoT device control, media streaming,
communication and cloud connectivity features to the connected Consumer & Home.
2. Module Feature Summary
Network Media Features
LS5BV-N11S is the small size and low power module for IEEE 802.11b/g/n
wireless LAN.
Embedded 1T1R 2.4G CMOS RF
Embedded 802.11n 1T1R MAC/BBP w/MLD enhancement
Support for both PCB connector and Notched SMT pad option
72.2 Mbps PHY data rate
20Mhz channel width
Legacy and high throughout modes
Compressed block ACK
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WEP64/128, WPA, WPA2, WAPI engines
QOS - WMM, WMM Power Save
Hardware frame aggregation
Supports 802.11h TPC
MIPS 24KEc 580 MHz with 64 KB I-cache/32 KB D-cache
16-bit DDR2 64Mbytes
Serial Flash 16Mbytes
3x UART
1x USB 2.0 HOST
Single port 10/100 Mbps Fast Ethernet MDI interface
Slow speed I/O: GPIO, SPI, I2C, I2S, UART, and JTAG
I2S interface supports 24-bit/192kHz (slave mode)
I/O: 3.3 V
Voice Features
Two Integrated DSP cores; that comprise: power-efficient voice trigger (VT)
subsystem, high-speed audio processor (APR) subsystem.
Noise Reduction
o Supports Narrowband and wideband voice communications
o Provides Non-stationary and stationary noise reduction for both
transmit and receive sides.
o Provides High voice quality in various handheld phone positions.
Acoustic Echo Cancellation: Reduces the effects of echo in both single-talk
(half-duplex) and double-talk (full-duplex) use cases.
Automatic Gain Control: maintains the voice signal at desired level for both
transmit and receive voice.
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Flexible Listening Enhancement: Improves the intelligibility of received
voice in noisy environment.
Voice equalizers: Enable frequency response modifications of voice and
audio for better performance.
Customized noise reduction for ASR: Maximizes ASR rates.
3. Block Diagram
Figure 3-1: LS5BV Block Diagram
LS5BV-N11S
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4. Specifications
4.1.
Generic Specification Table
Type Description for LS5BV-N11S
Model LS5BV-N11S
Product Name Voice Enabled Network Media Module
Major Chipset MT7688A + DBMD5
Standard IEEE802.11b / g /n
Data Transfer Rate
1, 2, 5.5, 6, 11, 12, 18, 22, 24, 30, 48, 54, 65 and maximum
Physical Layer rate of 72.2 Mbps
Frequency Band 2.4 GHz
Control Bus Interface UART
Data Bus Interface USB / Ethernet / I2S
I2S Sampling Rate Maximum of 192 KHz, 24 Bits
Operating Voltage 3.3 V +/- 5%
Ripple Requirement 20-30 mv peak-to-peak
Operating Temperature -20˚C to +60˚C
Storage Temperature TBG
Dimension (L x W x H) 52mm x 26mm x 5.8 mm (approx.) ± 0.2mm
The dimension mentioned are subject to change. Please
check with Libre team before finalising the design.
LS5BV-N11S
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4.2.
RF Characteristics
Items
IEEE802.11b
(11 Mbps mode
unless otherwise
specified)
IEEE802.11g
(54 Mbps mode
unless otherwise
specified)
IEEE802.11n
(MCS7 mode unless
otherwise specified)
Mode DSSS / CCK 11 Mbps
OFDM 54 Mbps OFDM 135 Mbps
Channel
Frequency 2412 ~ 2462 MHz 2412 ~ 2462 MHz 2412 ~ 2462 MHz
RX -83dbm -70dbm -65dbm
TX EVM -27db -30db -31db
Normal
Conditions
Temperature: 25˚C
VDD: 3.3 V
Temperature: 25˚C
VDD: 3.3 V
Temperature: 25˚C
VDD: 3.3 V
4.3.
DC Characteristics
Module Voltage Ripple
Requirement
Current Consumption
(linking)
LS5BV-N11S 3.3 V 20-30 mv peak-
to-peak
TBD
4.4. Antenna Specification
Antenna Module LSANT-1A-180
Antenna Gain ≤ 1.5dBi
Manufacturer of
Antenna
Golden Smart International Co., Ltd
Antenna Images
LS5BV-N11S
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5. Mechanical, Connectors and Interfaces
5.1.
Physical Module
The dimension mentioned are subject to change. Please check with Libre team before
finalising the design.
Module Dimension is 52mm x 26.0mm x 5.8mm (L x W x H)
Figure 6-1: Keep Out Area Details
TBG
Figure 5-1: LS5BV-N11S Module Bottom
TBG
Figure 5-2: LS5BV-N11S Module Top
5.2.
Connector Pin Out
Pin
Description Function Pin Function Description
1 3.3VD 3.3VD 31 3.3VD 3.3VD
2 Ground GND 32 3.3VD 3.3VD
3 I2C_Clock I2C_SCK 33 Ground GND
4 I2C_Data I2C_SDA 34 SPI_SPCK/GPIO4
SPCK
5 NC NC 35 SPI_MOSI/GPIO5
MOSI
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Pin
Description Function Pin
Function Description
6 POWER ON RESET
I/P
PORST_N 36 SPI_MISO/GPIO6
MISO
7 UART_TXD UART_TXD1 37 SPI_CS1/GPIO37 SPI-CS1
8 UART_RXD UART_RXD1 38 APR GPIO11 APR GPIO11
9 UART CTS UART_CTS1 39 GND Ground
10 UART RTS UART_RTS1 40 EPHY_RXP_P4 Port4 RX+
11 DEBUG-UART
Lite TXD
UART_TXD2 41 EPHY_RXN_P4 Port4 RX+-
12 DEBUG-UART
Lite RXD
UART_RXD2 42 EPHY_TXP_P4 Port4 TX+
13 Ground GND 43 EPHY_TXN_P4 Port4 TX-
14 MCLK_INPUT
(12.288MHz)
MCLK_INPUT
44 GND Grond
15 I2S_RXD I2SDI 45 NC NC
16 I2S_TXD I2SWDO 46 NC NC
17 I2S_LRCLK I2SWS 47 NC NC
18 I2S BIT CLOCK I2SCLK 48 NC NC
19 Ground GND 49 NC NC
20 APR GPIO8 APR GPIO8 50 NC NC
21 NW Indication LED NW
Indication
LED
51 MIC ON_LED MIC ON_LED
22 MIC_ON_OFF 52 MIC_OFF_LED MIC_OFF_LED
23 APR GPIO9 APR GPIO9 53 GND Ground
24 Ground GND 54 SETUP WAC / factury
default reset
25 USB_DM USB_D- 55 DDMS LED DDMS LED
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Pin
Description Function Pin
Function Description
26 USB_DP USB_D+ 56
27 Ground GND 57 APR GPIO10 APR GPIO10
28 RED LED RED LED 58 APR GPIO12 APR GPIO12
29 BLUE LED BLUE LED 59 GND Ground
30 GREEN LED GREEN LED 60 NC NC
6. Ordering Guide
Product Number Mic Configuration
LS5BV-N11S TBD
7. Environmental
7.1.
Operating
Operating Temperature: TBG
Relative Humidity: TBG
7.2.
Storage
Temperature: TBG
Relevant Humidity: TBG
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8. Reference Schematics
For latest and detailed reference schematic, Contact Libre team.
8.1.
LS5BV-N11S Connector
8.2.
J10 Connector
LS5BV-N11S
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8.3.
External MIC I/F
3 MIC Configuration – Currently Used
5 MIC Configuration – For Future Use
LS5BV-N11S
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8.4.
Alexa UI with Multiple RGB LED on the Ring
8.5.
Alexa UI with Single RGB LED
For detailed specifications, refer to
LS5BV-N11S
schematic file available in Libre Portal.
9. Disclaimer
THE MATERIALS AND INFORMATION ARE PROVIDED “AS IS” WITHOUT WARRANTY OF
ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A Pas RTICULAR
PURPOSE OR NON-INFRINGEMENT.
We use reasonable efforts to include accurate and up-to-date information in this
document. It does not however, make any representations as its accuracy or
completeness of information. Use of this document is at your own risk. Libre Wireless
Technologies, its suppliers, and other parties involved in creating and delivering this
document’s contents shall not be liable for any special, indirect, incidental, or
consequential damages, including without limitation, lost revenues or lost profits.
LS5BV-N11S
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10. Appendix
10.1.
Revision History
Revision
Date Description of change
0.1 February 21, 2017 Draft
0.2 February 22, 2017 Content restructure
FCC Statement
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, and (2) this device must accept any interference received,
including interference that may cause undesired operation.
Any Changes or modifications not expressly approved by the party responsible for compliance could void the
user's authority to operate the equipment.
The modular can be installed or integrated in mobile or fix devices only. This modular cannot be installed in
any portable device .
FCC Radiation Exposure Statement
This modular complies with FCC RF radiation exposure limits set forth for an uncontrolled environment.
This transmitter must not be co-located or operating in conjunction with any other antenna or transmitter.
This modular must be installed and operated with a minimum distance of 20 cm between the radiator and user
body.
If the FCC identification number is not visible when the module is installed inside another device, then the
outside of the device into which the module is installed must also display a label referring to the enclosed
module. This exterior label can use wording such as the following: “Contains Transmitter Module FCC ID:
2ADBM-LS5BVD-N11S Or Contains FCC ID: 2ADBM-LS5BVD-N11S”
When the module is installed inside another device, the user manual of the host must contain below warning
statements;
1. 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.
2. Changes or modifications not expressly approved by the party responsible for compliance could void the
user's authority to operate the equipment.
The devices must be installed and used in strict accordance with the manufacturer's instructions as described
in the user documentation that comes with the product.
Any company of the host device which install this modular with limit modular approval should perform the
test of radiated emission and spurious emission according to FCC part 15C : 15.247 and 15.209 requirement,
Only if the test result comply with FCC part 15C : 15.247 and 15.209 requirement，then the host can be sold
legally.