Wiimu Information Technology A02 Wiimu WiFi Audio Module User Manual WiiMu WiFi spec

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Document ID	2044939
Application ID	0a0oNWcVY3VZSThqnGCg9A==
Document Description	Manual
Short Term Confidential	No
Permanent Confidential	No
Supercede	No
Document Type	User Manual
Display Format	Adobe Acrobat PDF - pdf
Filesize	49.98kB (624732 bits)
Date Submitted	2013-08-16 00:00:00
Date Available	2013-08-16 00:00:00
Creation Date	2013-07-02 15:09:26
Producing Software	GPL Ghostscript 9.0
Document Lastmod	2013-07-02 15:09:26
Document Title	WiiMu WiFi spec
Document Creator	PDFCreator Version 1.1.0
Document Author:	wangping

WiFi and Ethernet Shield
With WiFi Audio
User Manual
Rev 1.0
MAY 25, 2013
Copyright © 2013 WiiMu Information Technology Inc.
WiiMu Information Technology Inc.
Doc Title
Number
Version
WiiMu-A02 WIFI Audio Specification
WMB20130110
1.2
HISTORY
Version
Date
Description
Author
K8
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WiiMu Information Technology Inc.
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WiiMu-A02 WIFI Audio Specification
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INDEX
Features .......................................................................................................................................................................5
1.1. Parameters...............................................................................................................................................6
2.
Hardware Description .................................................................................................................................7
2.1. Description of hardware interface ...........................................................................................................7
2.2. Mechanical dimension .............................................................................................................................9
2.3. Audio output ............................................................................................................................................9
2.4. External antenna ....................................................................................................................................10
2.5. 10/100M Ethernet Port .......................................................................................................................... 11
2.5.1.
Connect the module with RJ45 with transformer .............................................................................. 11
2.5.2.
Transfer the data from the module to user board via Ethernet interface directly............................... 11
2.6. USB host port ........................................................................................................................................12
2.7. Power supply .........................................................................................................................................13
2.8. Status LED.............................................................................................................................................13
3.
Software ....................................................................................................................................................14
3.1. Airplay introduction...............................................................................................................................15
3.2. DLNA introduction................................................................................................................................15
3.3. WiFi mode .............................................................................................................................................15
3.3.1. AP Client mode .......................................................................................................................15
3.4. Web Server setup ...................................................................................................................................16
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WiiMu Information Technology Inc.
Doc Title
WiiMu-A02 WIFI Audio Specification
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Version
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Features
Support 802.11 b/g/n networks
Support 10/100Mbps Ethernet
Standard WiFi and Ethernet Shield two in one
Support Internet audio streaming via Apple Airplay or DLNA
Support TCP/IP/UDP protocol
Support STA/AP/AP Client mode
Support UART and Ethernet Interface
Support audio output via 3.5mm audio jack
Built-in web server to easily configure the module
Support WiFi UART via AT command
Applications
WiFi speaker
WiFi audio docking station for smartphones
WiFi remote control
Portable WiFi base station with Airplay
WiFi/Ethernet shield two in one for Arduino
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WiiMu Information Technology Inc.
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WMB20130110
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1. Overview
WiiMu-A02 module is developed by Wiimu Information Technology Inc. It could be used in wireless speaker,
wireless docking station, WiFi base station and WiFi remote control. It supports 802.11b/g/n standard with up to
150Mbps bandwidth. It could work at AP, AP client or station modes. It is fully compatible with Apple Airplay and
digital living network alliance (DLNA) streaming standards. With this module, you can play the music on your
speaker wirelessly from iPhone, iPad , iPod touch, Android devices or PC devices.
1.1. Parameters
Items
Performance
Certification
FCC/CE
Standard
802.11 b/g/n
Frequency
2.412GHz-2.484GHz
802.11b: +20dBm(Max.)
Transmit
802.11g: +18dBm(Max.)
Wireless
802.11n: +15dBm(Max.)
802.11b: -89dBm
Receive sensitivity
802.11g: -81dBm
802.11n: -71dBm
External I-PEX
Antenna options
Hardware
Software
Internal on board antenna
Work voltage
5.0V (+/-5%)
Work current
170mA~300mA
Work temperature
-25
- 85
Storage temperature
-40
- 135
Size
33×48×3mm 28-pin SMT
WiFi working mode
AP Client (by default)/AP/STA
Security
WEP/WPA-PSK/WPA2-PSK/WAPI
Encryption
WEP64/WEP128/TKIP/AES
User Configuration
Web server
Software Update
Web server
Audio
protocol
AirPlay
streaming
DLNA
Table 0-1 WiiMu-A02 parameters
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WiiMu Information Technology Inc.
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2. Hardware Description
2.1. Description of hardware interface
WiiMu-A02 module provides two options to connect with customer board either through its 28-pins DIP or SMT
pads.
ANT
5VD GND GND
OUT_L AGND OUT_R
RF Connector
5VD
15
14
OUT_L
5VD
16
13
AGND
SPI_CS1
17
12
OUT_R
Reserved
18
11
1V8_Output
GPIO_19
19
10
nReload
GPIO_20
20
UART_TXD
Reserved
21
UART_RXD
Reserved
22
GND
Eth_TX+
23
GND
Eth_TX-
24
nRST
Eth_RX-
25
nReady
Eth_RX+
26
SPI_CLK
USB-
27
SPI_MOSI
USB+
28
SPI_MISO
Figure 2-1 WiiMu-A02 interface pins
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Pin description
Pin
Description
Net
Type
Comments
6,7
GND
GND
Power
Ground
15,16
5VD
5VD
Power
+5V@ 350mA
SPI data
SPI_MISO
I/O
SPI interface is configured to
SPI data
SPI_MOSI
I/O
work in master mode, can be
SPI clock
SPI_CLK
I/O
used to connect SD card or other
17
SPI chip select
SPI_CS1
I/O
SPI slave devices
Module
nReady
O,IPU
Module finishes the boot-up and
ready
signal
is ready to work
output “0”;
Otherwise, output “1”.
Module reset
nRST
I,IPU
Reset with pull down, reset time
>300ms
UART data receive
UART_RXD
I,IPD
UART data send
UART_TXD
O,IPD
10
Reset
nReload
I,IPU
factory
setting
UART
Pull down for more than 5
seconds then pull up, reset the
module with factory setting.
11
Output 1.8V
1V8_Output
1.8V@300mA, used for Ethernet
interface
12
Audio output-R
OUT_R
13
AGND
AGND
Power
14
Audio output-L
OUT_L
18
Reserved pin
Reserved
I/O, IPD
19
GPIO
GPIO_19
I/O, IPD
20
GPIO
GPIO_20
I/O, IPD
21
Reserved pin
Reserved
I/O, IPD
Reserved, keep float
22
Reserved pin
Reserved
I/O, IPD
Reserved, keep float
23
Ethernet Output+
PHY_TX+
1.8V TTL interface
24
Ethernet Output-
PHY_TX-
(module provides 1.8V reference
25
Ethernet Input-
PHY_RX-
voltage via Pin11)
26
Ethernet Input+
PHY_RX+
27
USB input-
USB-
28
USB input+
USB+
Audio output ports
Reserved, keep float
USB 2.0 host interface
Table 2-1 WiiMu-A02 module pin description
Notes
1. I: Input, O: Output, P: Power, IPU: Internal Pull Up, IPD: Internal Pull Down, A: Analog.
Meanwhile,WiiMu-A02 module could work in standalone mode. There are two three pin breakouts that could
connect with 5V voltage input and stereo audio output.
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2.2. Mechanical dimension
WiiMu-A02 module has the physical dimension of 33 x 48mm. The detailed layout shows below. The unit is in
mm.
Figure 2-2: WiiMu-A02 physical dimension
2.3. Audio output
WiiMu_A02 module has integrated a high quality audio codec IC with the following performance parameters:
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Table 2-3 Audio output parameters
2.4. External antenna
WiiMu-A02 provides two antenna options for different customer applications. The user could use either internal or
external antenna. To use external antenna, please choose the antenna type that meets the requirement of IEEE 802
b/g/n WiFi standard running at 2.4GHz frequency. The detailed parameters are shown in the table below.
Items
Parameters
Frequency range
2.4~2.5GHz
Impedance
50 Ohm
VSWR
2 (Max)
Reflection loss
-10dB (Max)
Connector
I-PEX or populate directly
Table 2-5 WiiMu-A02 external antenna parameters
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2.5. 10/100M Ethernet Port
WiiMu-A02 module provides 10/100Mbps Ethernet interface pins that could be used to connect with Ethernet
RJ45 socket via transformer. On the other hand, it could be used to transfer data from the module to the customer
base board directly via PHY-to-PHY connection. Moreover, the module also provides the 1.8V reference voltage
for the Ethernet transformer.
2.5.1. Connect the module with RJ45 with transformer
To provide 10/100Mbps Ethernet functionality, you could connect the module with the RJ45 socket via a Ethernet
transformer. The detailed diagram is as follows:
Figure 2-4 The reference design of Ethernet via transformer
2.5.2. Transfer the data from the module to user board via
Ethernet interface directly
The Ethernet interface could be used to transfer data from the module to customer board through Ethernet interface.
It could save one transformer, one the RJ45 socket and PCB space. The reference circuit diagram is shown below.
The voltage (VCC_PHY) in the figure depends on the PHY chip in the customer board, usually it requires 2.5V
power input.
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Table 2-5 The reference design of Ethernet
2.6. USB host port
WiiMu_A02 module provides high speed USB2.0 host interface. To connect with USB port, the reference design is
shown below.
Figure 2-6 USB host interface
Please follows the following design rule to populate the USB host interface:
Item
Signal Group
Topology
Reference Plane
Characteristic Trace Impedance (Zo)
Trace Width
Serpentine Spacing(center to center)
Minimum Isolation Spacing to Clock Signals
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Parameter
USB
Differential Pair Point-to-Point
Ground Referenced
90 Ω ±10%
4 mils
8.5 mils
50 mils
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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)
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20 mils
20 mils
Max = 8000 mils
2 (per side)
Match total length to within ±10 mils
Table 2-6 WiiMu-A02 USB design rule
2.7. Power supply
WiiMu-A02 module is powered with single 5V power supply. The peak current is around 350mA, the normal
working current is 200mA. In sleep mode (when WiFi is off), the current is 100mA.
The power supply is important for system stability and WiFi performance. It is recommended to use 100uF and
10uF decoupling capacitor in parallel to reduce the ripple of power supply.
2.8. Status LED
WiiMu-A02 module provides four status LEDs as the follows:
1.
2.
3.
4.
Power supply status
WiFi AP status
WiFi station status
WiFi data transfer status
Status LED of the WiiMu-A02 module:
LED status
Description
AP LED off
WiFi AP is waiting for connection
AP LED on
WiFi AP has the device that connected to the module
Client LED off
WiFi AP Client is not connected to any router
Client LED on
WiFi AP Client is connected to router, however, it is not
connected to Internet yet
Client LED blinking
WiFi AP Client is connected to router and connected to Internet
too
Power LED on
WiFi is in boot-up procedure
Power LED blinking slowly ( on:
1 second, off: 1 second)
WiFi is running normally
Power LED blinking fast (on: 0.3
second, off: 0.3 second)
The system is in the process of updating firmware. Please don’t
disconnect the power. Otherwise, the system may be corrupt.
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WiFi data LED on
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The WiFi data transfer is ongoing
Table 2-7 WiiMu-A02 status LEDs
3. Software
WiiMu-A02 supports Airplay and DLNA functionality:
Items
Description
 iOS 4.2 and above
iOS version
 iPhone iPad
iTune version
iPod Touch iPad Mini
iTunes 10.2 and above
PC, iMac
 WiiMu-A02 work in AP Client mode
Network setup
 Support WPS
Support Airplay mode
 Play, Pause, Seek, Volume, Prev, Next
Support Airplay applications
 Apple Music App.
 QQ Music
 iTunes
 Many music applications …
Support DLNA operations
 Play, Pause, Seek, Volume, Prev, Next
Support DLNA applications
 Compatible with DLNA certified player, i.e.,
Skifta
BubbleUPnP
 PC
Supported browser
IE9/10
 iOS/MAC OS
Supported language of Web server
Chrome, Firefox
Safari
 Chinese
 English
 Setup WiiMu-A02 network
Setup with web server
 Setup WiiMu-A02device name, add password protection
 Update WiiMu-A02firmware and restore factory setting
Table 3-1 WiiMu-A02 Software description
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3.1. Airplay introduction
AirPlay is the streaming standard developed by Apple Inc. It lets you wirelessly stream what’s on your iOS device
to your HDTV or speaker. It is supported starting from iOS4.2 and OS X Mountain Lion. It can also stream the
music in PC or Mac via iTunes 10.1 or above.
When the user devices (including iMac, PC, iPod touch, iPhone, iPad) are in the same WiFi LAN with the speaker
that supports Airplay, when the user device launches the applications such as iTunes or iOS music applications, the
Airplay button
appears. When click the Airplay button, please choose the speaker that you want to stream
to.
3.2. DLNA introduction
Digital Living Networrk Alliance (DLNA) is an organization formed by companies in consumer electronics,
cellphone and PC fields. The device with DLNA certification could seamlessly works with other DLNA devices
without compatibility issue. The device has
logo.
3.3. WiFi mode
WiiMu-A02 module is working at WiFi AP Client mode. To setup AP client mode, please setup with web server.
3.3.1. AP Client mode
Device working under AP Client could serve as AP and client simultaneously. When it is used as AP, other wireless
device could connect with it directly. Meanwhile, it could connect to other wireless AP as a wireless station. In this
mode, device could connect with WiiMu-A02 and playback music to this device with airplay or DLNA. Meanwhile,
if WiiMu-A02 is connected with main wireless AP that is connected to Internet, the device that is connected with
WiiMu-A02 has access to Internet too.
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Figure 3-1 WiiMu-A02 AP Client mode
3.4. Web Server setup
WiiMu-A02 module provides Web server to let user configure the module via the browser.
In the factory mode, the SSID of WiiMu-A02’s AP port is in the form of WiiMu _AP_xxxx. The xxxx represent 4
digital numbers. The IP address, user name and password are shown below:
Parameters
Default setting
SSID
WiiMu _AP_xxxx
IP address
10.10.10.254
Mask
255.255.255.0
DNS
WiiMu.com
User name
admin
Password
admin
Table 3-2 WiiMu-A02 AP default parameters
You could use PC, iOS or Android device connect the WiiMu-A02 first as wireless AP, then launch the browser and
login to web server and configure the module.
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Title                           : WiiMu WiFi spec
Creator                         : wangping
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Author                          : wangping
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