Linkplay Technology A88 Wireless Smart Audio Module User Manual

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Document ID	3848910
Application ID	KW3721bOYEZbMWZo7VEfXw==
Document Description	User Manual
Short Term Confidential	No
Permanent Confidential	No
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Document Type	User Manual
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Date Submitted	2018-05-14 00:00:00
Date Available	2018-05-14 00:00:00
Creation Date	2018-04-04 13:08:16
Producing Software	Microsoft: Print To PDF
Document Lastmod	2018-05-07 15:32:52
Document Title	Microsoft Word - Linkplay WiFi Audio A88 Specification V1.5_EN.doc
Document Author:	tonny

Linkplay Wireless Smart Audio
Module (A88)
User Manual
Rev 1.5
Apr. 02 2018
Doc Title
Number
Version
Linkplay WiFiAudio-A88 Specification
WMB20170414
1.5
HISTORY
Version
Date
Description
1.0
2017/04/14
Specification release
1.1
2017/08/18
Update new version dimensions and features
1.2
2017/09/05
Update RF parameters
1.3
2017/12/04
Update operating temperature range
1.4
2018/03/05
Add plug PCB and NGFF connector dimensions
1.5
2018/04/02
Add key components list
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Doc Title
Linkplay WiFiAudio-A88 Specification
Number
Version
WMB20170414
1.5
INDEX
1.
2.
3.
4.
Overview ..................................................................................................................................................... 4
1.1. Key Components List .............................................................................................................................. 4
1.2. Parameter ................................................................................................................................................. 5
Hardware Description ............................................................................................................................... 9
2.1. Description of Hardware Interface .......................................................................................................... 9
2.2. Mechanical Dimension .......................................................................................................................... 11
2.3. External Antenna ................................................................................................................................... 13
2.4. Typical Application ................................................................................................................................ 14
2.5. Power on Sequence ................................................................................................................................ 16
2.6
USB OTG Port....................................................................................................................................... 16
Software Introduction ...................................................................................................................................... 17
3.1. Feature list .................................................................................................................................................. 17
3.2. APP support ................................................................................................................................................ 17
3.3. Certifications............................................................................................................................................... 18
Module picture and package ............................................................................................................................ 18
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Doc Title
Number
Version
Linkplay WiFiAudio-A88 Specification
WMB20170414
1.5
1. Overview
Linkplay Wi-Fi Audio module - A88, is our 3rd generation smart audio modules developed to be used in the
connected speaker, sound bar and other connected audio devices. It integrates the low power Broadcom
BCM43455 Wi-Fi/BT chip and Amlogic A111 application processor. A111 is an advanced application processor
designed for connected audio applications. It integrates a powerful CPU subsystem, advanced multi-format audio
processing unit, a secured running environment and all major peripherals to form the low power audio AP.
The main system CPU is a quad-core ARM Cortex-A5 CPU with 32KB L1 instruction and 32KB data cache
for each core and a large 512KB L2 unified cache to improve system performance. Each Cortex-A5 CPU can run
up to 1.5GHz and has a wide bus connecting to the memory sub-system. The main CPU handles all operating
system, networking and user-interface related tasks. The audio processing engine (APE) is based on ARM®
NEONTM general-purpose SIMD architecture which works seamlessly with main CPU to accelerate the
multimedia processing algorithms, enhancing the user experience. It is able to decode all major audio formats up to
192KHz high resolution including MP3, AAC, WMA, RM, FLAC, OGG, etc and with the flexibility to support
future audio standards. A111 also integrates all standard audio input/output interfaces including I2S, PCM and
S/PDIF audio input/output for different applications.
A88 module supports IEEE 802.11 a/b/g/n/ac 2.4GHz and 5GHz. It also supports BT4.2 with EDR and BLE.
A88 module also provides USB, I2S, I2C, PWM, SPI, UART etc. interfaces.
The firmware is fully compatible with Apple AirPlay and digital living network alliance (DLNA) streaming
standards. It supports Hi-Fi audio up to 192KHz, 24-bit with most popular audio formats. It supports multi-room
and multi-channel audio streaming with perfect synchronization.
With this module, you can play the music on your speaker wirelessly from iPhone, iPad , iPod touch, Android
devices or PC. More important, it enables the traditional speaker system to become the Internet enabled device
through the wired or wireless connection provided by the module. Thus, you could freely playback any Internet
audio contents such as music, podcast, radio or either the accompany audio in the movie directly from the Internet.
Feature


Application


Support IEEE 802.11 a/b/g/n/ac 1x1 antenna diversity Wi-Fi dual band
Support BT4.2 with EDR and BLE
Connected speaker, sound bar
Connected audio devices
1.1. Key Components List
No.
Type
Description
Brand
Main SoC
A111 LFBGA 12x12mm 306-ball 0.65 ball pitch RoHS
Amlogic
DRAM
DDR3 H5TQ1G63EFR-PBC FBGA96 SMD RoHS
SKHynix
FLASH
SLC TC58NVG0S3HTA00 TSOP I 48 SMD RoHS
TOSHIBA
Wi-Fi/BT
AP6355SD 2.4G/5G DUAL BAND BT4.2 with EDR and BLE
AMPAK
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Doc Title
Number
Version
Linkplay WiFiAudio-A88 Specification
WMB20170414
1.5
POWER IC
DC-DC SY8089AAAC SOT23-5 RoHS
SILERGY
POWER IC
DC-DC SY8088AAC SOT23-5 RoHS
SILERGY
RESET IC
SGM809-RXN3L/TR SOT-23 RoHS
SGMICRO
1.2. Parameter
Type
Wi-Fi
Items
Performance
Certification
FCC/CE/Wi-Fi Alliance
WLAN Standard
IEEE 802.11 a/b/g/n/ac Wi-Fi compliant
Frequency Range
2.400 GHz ~ 2.483 GHz (2.4 GHz ISM Band)
Number of Channels
Ch1 ~ Ch13
Modulation
802.11b : DQPSK, DBPSK, CCK
802.11 g/n : OFDM /64-QAM,16-QAM, QPSK, BPSK
802.11b /11Mbps : 16 dBm ± 1.5 dB @ EVM≤-9dB
Output Power
802.11g /54Mbps : 15 dBm ± 1.5 dB @ EVM≤-25dB
802.11n /MCS7@HT20 : 14 dBm ± 1.5 dB @ EVM≤
-27dB
- 1Mbps PER @ -96 dBm, ± 2 dB
SISO Receive Sensitivity
(11b,20MHz) @8% PER
- 2Mbps PER @ -90 dBm, ± 2 dB
- 5.5Mbps PER @ -88 dBm, ± 2 dB
- 11Mbps PER @ -86 dBm, ± 2 dB
- 6Mbps PER @ -90 dBm, ± 2 dB
- 9Mbps PER @ -88 dBm, ± 2 dB
- 12Mbps PER @ -87 dBm, ± 2 dB
Wi-Fi (2.4G)
SISO Receive Sensitivity
(11g,20MHz) @10% PER
- 18Mbps PER @ -85 dBm, ± 2 dB
- 24Mbps PER @ -83 dBm, ± 2 dB
- 36Mbps PER @ -80 dBm, ± 2 dB
- 48Mbps PER @ -76 dBm, ± 2 dB
- 54Mbps PER @ -73 dBm, ± 2 dB
- MCS=0 PER @ -89 dBm, ± 2 dB
- MCS=1 PER @ -85 dBm, ± 2 dB
- MCS=2 PER @ -84 dBm, ± 2 dB
Receive Sensitivity
(11n,20MHz) @10% PER
- MCS=3 PER @ -80 dBm, ± 2 dB
- MCS=4 PER @ -77 dBm, ± 2 dB
- MCS=5 PER @ -75 dBm, ± 2 dB
- MCS=6 PER @ -72 dBm, ± 2 dB
- MCS=7 PER @ -70 dBm, ± 2 dB
Maximum Input Level
Wi-Fi (5G)
802.11b : -10 dBm
802.11g/n : -20 dBm
Antenna Reference
External: I-PEX, Small antennas with 0~2 dBi peak gain
WLAN Standard
IEEE 802.11a/n 2x2, Wi-Fi compliant
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Doc Title
Linkplay WiFiAudio-A88 Specification
Number
Version
WMB20170414
1.5
Frequency Range
4.900 GHz ~ 5.845 GHz (5.0 GHz ISM Band)
Number of Channels
Please see the following table
802.11a : OFDM /64-QAM,16-QAM, QPSK, BPSK
Modulation
802.11n : OFDM /64-QAM,16-QAM, QPSK, BPSK
802.11ac : OFDM /256-QAM
802.11a /64-QAM(R=3/4) : 14 dBm ± 2 dB @ EVM≤
-25dB
Output Power
802.11n /64-QAM(R=5/6) : 13 dBm ± 2 dB @ EVM≤
-27dB
802.11ac/256-QAM(R=3/4) : 12 dBm ± 2 dB @ EVM≤
-30dB
802.11ac/256-QAM(R=5/6) : 10 dBm ± 2 dB @ EVM≤
-32dB
- 6Mbps PER @ -90 dBm, ± 2 dB
- 9Mbps PER @ -88 dBm, ± 2 dB
- 12Mbps PER @ -87 dBm, ± 2 dB
SISO Receive Sensitivity
(11a,20MHz) @10% PER
- 18Mbps PER @ -85 dBm, ± 2 dB
- 24Mbps PER @ -81 dBm, ± 2 dB
- 36Mbps PER @ -78 dBm, ± 2 dB
- 48Mbps PER @ -73 dBm, ± 2 dB
- 54Mbps PER @ -72 dBm, ± 2 dB
- MCS=0 PER @ -89 dBm, ± 2 dB
- MCS=1 PER @ -87 dBm, ± 2 dB
- MCS=2 PER @ -84 dBm, ± 2 dB
SISO Receive Sensitivity
(11n,20MHz) @10% PER
- MCS=3 PER @ -81 dBm, ± 2 dB
- MCS=4 PER @ -77 dBm, ± 2 dB
- MCS=5 PER @ -73 dBm, ± 2 dB
- MCS=6 PER @ -71 dBm, ± 2 dB
- MCS=7 PER @ -70 dBm, ± 2 dB
- MCS=0 PER @ -87 dBm, ± 2 dB
- MCS=1 PER @ -84 dBm, ± 2 dB
- MCS=2 PER @ -82 dBm, ± 2 dB
Receive Sensitivity
(11n,40MHz) @10% PER
- MCS=3 PER @ -78 dBm, ± 2 dB
- MCS=4 PER @ -75 dBm, ± 2 dB
- MCS=5 PER @ -70 dBm, ± 2 dB
- MCS=6 PER @ -69 dBm, ± 2 dB
- MCS=7 PER @ -67 dBm, ± 2 dB
- MCS=0 PER @ -88 dBm, ± 2 dB
Receive Sensitivity
(11ac,20MHz) @10% PER
- MCS=1 PER @ -86 dBm, ± 2 dB
- MCS=2 PER @ -83 dBm, ± 2 dB
- MCS=3 PER @ -80 dBm, ± 2 dB
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Doc Title
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Version
Linkplay WiFiAudio-A88 Specification
WMB20170414
1.5
- MCS=4 PER @ -76dBm, ± 2 dB
- MCS=5 PER @ -72 dBm, ± 2 dB
- MCS=6 PER @ -70 dBm, ± 2 dB
- MCS=7 PER @ -69 dBm, ± 2 dB
- MCS=8 PER @ -65 dBm, ± 2 dB
- MCS=0 PER @ -86 dBm, ± 2 dB
- MCS=1 PER @ -82 dBm, ± 2 dB
- MCS=2 PER @ -80 dBm, ± 2 dB
- MCS=3 PER @ -77 dBm, ± 2 dB
Receive Sensitivity
(11ac,40MHz) @10% PER
- MCS=4 PER @ -74 dBm, ± 2 dB
- MCS=5 PER @ -69 dBm, ± 2 dB
- MCS=6 PER @ -67 dBm, ± 2 dB
- MCS=7 PER @ -65 dBm, ± 2 dB
- MCS=8 PER @ -63 dBm, ± 2 dB
- MCS=9 PER @ -62 dBm, ± 2 dB
- MCS=0 PER @ -82 dBm, ± 2 dB
- MCS=1 PER @ -79 dBm, ± 2 dB
- MCS=2 PER @ -77 dBm, ± 2 dB
- MCS=3 PER @ -73 dBm, ± 2 dB
Receive Sensitivity
(11ac,80MHz) @10% PER
- MCS=4 PER @ -70 dBm, ± 2 dB
- MCS=5 PER @ -68 dBm, ± 2 dB
- MCS=6 PER @ -64 dBm, ± 2 dB
- MCS=7 PER @ -62 dBm, ± 2 dB
- MCS=8 PER @ -59 dBm, ± 2 dB
- MCS=9 PER @ -58 dBm, ± 2 dB
Bluetooth
Maximum Input Level
802.11a/n : -30 dBm
Antenna Reference
External: I-PEX, Small antennas with 0~2 dBi peak gain
Certification
BQB
Bluetooth Standard
Bluetooth V4.2 of 1, 2 and 3 Mbps
Antenna Reference
External: I-PEX, Small antennas with 0~2 dBi peak gain
Frequency Band
2402 MHz ~ 2480 MHz
Number of Channels
79 channels
Modulation
FHSS, GFSK, DPSK, DQPSK
Output Power
(Output power can be
configured by HCD
firmware)
10 dBm (Max.)
Sensitivity @ BER=0.1%
for GFSK (1Mbps)
-86 dBm, typical
Sensitivity @ BER=0.01%
for π/4-DQPSK (2Mbps)
-86 dBm, typical
Sensitivity @ BER=0.01%
-80 dBm, typical
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Doc Title
Number
Version
Linkplay WiFiAudio-A88 Specification
WMB20170414
1.5
for 8DPSK (3Mbps)
GFSK (1Mbps): -20dBm
Maximum Input Level
π/4-DQPSK (2Mbps) : -20dBm
8DPSK (3Mbps) : -20dBm
Hardware
Work voltage
3.5-5.5V
Work current
200 ~ 240mA (STA mode)
Standby current
5mA
Operating ambient
temperature
0℃ ~ 70℃
Storage temperature
-40℃ ~ 85℃
Wi-Fi work distance
2.4G 80 meters/5G 150meters
IO Extension
USB, I2S, I2C, PWM, SPI, UART
Dimension
NGFF golden finger 67PIN
Table1-1 Linkplay A88 module parameters
5GHz(20MHz) Channel table
Band (GHz)
Operating Channel Numbers
Channel Center Frequencies(MHz)
36
5180
40
5200
44
5220
48
149
5240
5745
153
5765
157
5785
161
5805
165
5825
5.15GHz~5.25GHz
5.725GHz~5.845GHz
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Doc Title
Linkplay WiFiAudio-A88 Specification
Number
Version
WMB20170414
1.5
2. Hardware Description
2.1. Description of Hardware Interface
A88 provides the option to connect with customer board through its 67-pins NGFF golden finger. The detail is as
follows.
Figure 2-1 A88 interface pins
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Doc Title
Linkplay WiFiAudio-A88 Specification
Number
Version
WMB20170414
1.5
Pin description:
Pin No.
Pin Name
Type
Function0
1，3，5，
16，23，
25，27，
28，34，
46，50， GND
53，54，
58，63，
64，74，
75
Supply
Digital ground
2，4，6
Power I
Power supply input > 500mA
VDD_5V
26，43，
48，52， NC
56，62
Function1
No connection
GPIO1
I/O
General purpose input output
17
GPIO3
I/O
General purpose input output
19
GPIO_M
I/O
General purpose input output
21
GPIO_SD
I/O
General purpose input output
29
NC
31
GPIOY_9
I/O
General purpose input output
33
GPIOY_10
I/O
General purpose input output
35
GPIOY_11
I/O
General purpose input output
37
GPIOY_12
I/O
General purpose input output
39
GPIOY_13
I/O
General purpose input output
41
GPIOY_14
I/O
General purpose input output
45
PWM2
I/O
PWM
General purpose input output
47
PWM3
I/O
PWM
General purpose input output
49
I2C1_SCL
I/O
I2C bus clock
General purpose input output
51
I2C1_SDA
I/O
I2C bus data
General purpose input output
55
SPI_MISO
I/O
SPI bus MISO
General purpose input output
57
SPI_MOSI
I/O
SPI bus MOSI
General purpose input output
59
SPI_CLK
I/O
SPI bus clock
General purpose input output
61
SPI_CS
I/O
SPI bus chip select
General purpose input output
65
USB1_VBUS
67
USB1_DN
I/O
USB data minus
69
USB1_DP
I/O
USB data plus
71
+5V
N/A
NC
73
USB_ID
OTG ID signal
18
UART0_TXD
UART0 transmit
20
UART0_RXD
UART0 receive
No connection
Document No.: WMB20170414
USB OTG bus power
Debug use only
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Doc Title
Linkplay WiFiAudio-A88 Specification
Number
Version
WMB20170414
1.5
22
TW1_SCL
I/O
I2C bus clock
General purpose input output
24
TW1_SDA
I/O
I2C bus data
General purpose input output
30
UART1_TXD
UART1 transmit
32
UART1_RXD
UART1 receive
36
JTAG_TMS
NC
No connection
38
JTAG_TDI
NC
No connection
40
JTAG_TDO
NC
No connection
42
JTAG_TCLK
NC
No connection
44
JTAG_TRST
NC
No connection
60
I2S_DI1
I2S data in
66
I2S_DO1
I2S data out
68
I2S_MCLK
I2S master clock
70
I2S_BCLK
I/O
I2S bit clock
72
I2S_LRCLK
I2S L/R clock
Test use only
Table 2-1 Linkplay A88 module pin description
Notes:
1.
2.
3.
4.
5.
I：Input
O：Output
P：Power
PU：Internal Pull Up
PD：Internal Pull Down
2.2. Mechanical Dimension
Linkplay A98 module has the dimension of 58.5mm x 41.7mm. The detailed layout will be given shortly below.
PCB thickness is 0.8mm, must match with NGFF female connector.
Unit: mm
PLUG PCB dimensions:
NGFF connector dimensions:
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Doc Title
Linkplay WiFiAudio-A88 Specification
Number
Version
WMB20170414
1.5
Top View
TOP Components High Limit
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Doc Title
Linkplay WiFiAudio-A88 Specification
Number
Version
WMB20170414
1.5
Bottom Components High Limit
Figure 2-2: Linkplay A88 physical dimension
2.3. External Antenna
A88 uses the external antenna for the best Wi-Fi performance. To use external antenna, please choose the antenna
type that meets the requirement of IEEE 802 a/b/g/n/ac Wi-Fi standard running at 2.4GHz/5GHz frequency. The
detailed parameters are shown in the table below.
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Doc Title
Linkplay WiFiAudio-A88 Specification
Item
Number
Version
WMB20170414
1.5
Parameter
Frequency range
2.4 ~ 2.5GHz/4.9 ~ 5.8GHz
Impedance
50 Ohm
VSWR
2 (Max.)
1.43 dBi (@2.4~2.5GHz)
Reflection loss
2.77 dBi (@5.15 ~ 5.85 GHz)
Connector
I-PEX or populate directly
Table 2-5 External antenna parameters for A88
2.4. Typical Application
WiFiAudio-A88’s typical reference design:
DAC
Far-Field
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Doc Title
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Number
Version
WMB20170414
1.5
Power
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Doc Title
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Linkplay WiFiAudio-A88 Specification
WMB20170414
1.5
2.5. Power on Sequence
2.6 USB OTG Port
Please follow the design rule below to populate the USB host interface:
Item
Signal Group
Topology
Reference Plane
Characteristic Trace Impedance (Zo)
Trace Width
Serpentine Spacing (center to center)
Document No.: WMB20170414
Parameter
USB
Differential Pair Point-to-Point
Ground Referenced
90 Ω ±10%
4 mils
8.5 mils
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Doc Title
Number
Version
Linkplay WiFiAudio-A88 Specification
Minimum Isolation Spacing to Clock Signals
Minimum Isolation Spacing to Low-Speed Signals
Minimum Isolation Spacing to other USB Pair
Total Length (with package length)
Maximum Recommended Via Count
DM to DP Length Matching (with package length)
Table 2-2
3.
WMB20170414
1.5
50 mils
20 mils
20 mils
< 8000 mils
2 (per side)
Match total length to within ±10 mils
A88 USB design rule
Software Introduction
3.1. Feature list

“Easy Setup” to setup your network, with the help of one button of your device, you can connect the device to
your home router quickly.

Music stream protocol
Support Spotify Connect, Airplay, DLNA and QPlay protocol


Amazon Alexa
Music content
Support iHeartRadio, Napster/Rhapsody, Tidal, Deezer, vTune, Qobuz, Audible, Radio.de, NPR，Ximalaya，
Qingting FM, QQ FM, Douban FM inside, with the help of App, you can search, stream, playback and preset
the musics of the above music services.

Multiroom
Support multiroom.
Support Airplay, Spotify, Bluetooth, Aux-in multiroom playback.

Music format
HTTP/HTTPS/RTSP/MMS/TS protocol
HLS/ASX/M3U playlist format
MP3/AAC/FLAC/ALAC/WMA/APE/OGG codec

BT
Support 4.2：A2DP, AVRCP, HFP, HID profiles
Support BLE
Support EDR

Preset
With the help of App, you can store the music account token and playlist in the A88. Then the end user can
play the playlist by the button/voice or timer even without the App.
3.2. APP support

iOS App
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Doc Title
Linkplay WiFiAudio-A88 Specification
Number
Version
WMB20170414
1.5
≥ iOS6.1，suggest iOS10 and above

Android APP
≥ Android 4.3.3

Quick Customization
With the help of the Linkplay compile server, you can change the brand and some strings, change the logo and
some pictures to get a customization App.
3.3. Certifications
Linkplay can help you to finish follow certifications:







4.
Wi-Fi Logo
BQB
Amazon Alexa
MFI
Spotify Connect
DLNA
QPlay
Module picture and package
1）A88 module picture
Notes:
Linkplay: Linkplay logo
A88: Module No.
V04: MP version of A88 module
2）Delivery
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Doc Title
Linkplay WiFiAudio-A88 Specification
Number
Version
WMB20170414
1.5
Notes：
One tray = 100pcs
One carton = 5 trays
On carton in total: 5*100pcs = 500pcs
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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: 2ANOG-A88 Or ContainsFCC ID: 2ANOG-A88”
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 Single modular approval should
perform the test of radiated emission and spurious emission according to FCC
requirement, Only if the test result comply with FCC equirement, then the
host can be sold legally.
IC statement
This device complies with Industry Canada’s licence-exempt RSSs. Operation is subject to the
following two conditions:
(1) This device may not cause interference; and
(2) This device must accept any interference, including interference that may cause undesired
operation of the device.
Cet appareil est conforme aux CNR exemptes de licence d'Industrie Canada . Son fonctionnement
est soumis aux deux conditions suivantes :
( 1 ) Ce dispositif ne peut causer d'interférences ; etc
( 2 ) Ce dispositif doit accepter toute interférence , y compris les interférences qui peuvent
causer un mauvais fonctionnement de l'appareil.
A separation distance of at least 20 cm is maintained between the transmitter's radiating
structure(s) and the body of the user or nearby persons.
Une distance de séparation d'au moins 20 cm est maintenue entre l'émetteur rayonnant
structure (s) et le corps de l'utilisateur ou des personnes à proximité.
For a host manufacture's using a certified modular, if (1) the module's IC number is not visible
when installed in the host, or (2) if the host is marketed so that end users do not have
straightforward commonly used methods for access to remove the module so that the IC number
of the module is visible; then an additional permanent label referring to the enclosed module:
"Contains Transmitter Module IC: " 23153-A88 " or "Contains IC: 23153-A88" must be used.
Warning:
This radio transmitter [ISED: 23153-A88] has been approved by Innovation, Science and Economic
Development Canada to operate with the antenna types listed below, with the maximum permissible
gain indicated. Antenna types not included that have a gain greater than the maximum gain indicated
for any type listed are strictly prohibited for use with this device.

---

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Create Date                     : 2018:04:04 13:08:16+08:00
Modify Date                     : 2018:05:07 15:32:52+08:00
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Creator                         : tonny
Title                           : Microsoft Word - Linkplay WiFi Audio A88 Specification V1.5_EN.doc
Metadata Date                   : 2018:05:07 15:32:52+08:00
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