GWK5NO Applications Notes
GWK5NO 2.4GHz Wireless Audio Module
1. GWK5NO TX Form Factor
Figure [1]: Gigawit GWK5NO TX Module
No.
name
Description
1
LED status
Status LED output
2
Pairing button
Press long than 5s to enter pairing mode
3
Program download interface
ISP download Interface,
4
Launch base plate
Transmitting terminal base plate identifier
5
USB POWER
USB POWER Interface
6
Battery-power
Battery-power Interface
DC 4.2 – 5V
7
The audio input include L-channel, R-channel
Audio in
stereo, the audio signal unbalanced.
8
ADC
WM8738
9
GWK5NO TX Module
Gigawit GWK5NO Module
Table [1]: GWK5NO TX Assignment
©2008-2012 Gigawit Electronics Ltd.
Version 1.0
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GWK5NO Applications Notes
2. GWK5NO RX Form Factor
Figure [2]: Gigawit GWK5NO RX Module
No.
name
Description
1
LED status
Status LED output
2
Pairing button
Press long than 5s to enter pairing mode
3
Program download interface
ISP download Interface,
4
Receiving base plate
The receiving end base plate identifier
5
USB POWER
USB POWER Interface
6
Battery-power
Battery-power Interface
DC 4.2 – 5V
7
The audio output include L-channel, R-channel
Audio out
stereo, the audio signal unbalanced.
8
DAC
WM8501
9
GWK5NO RX Module
Gigawit GWK5NO Module
Table [2]: GWK5NO RX Assignment
©2008-2012 Gigawit Electronics Ltd.
Version 1.0
Page 2 of 5
GWK5NO Applications Notes
3. ISP Firmware Updating
GWK5Nx support ISP firmware updating through UART, When TXD pin connected with a 4.7K
resistor to the GND, GWK5Nx will enter the ISP mode.
Figure [3]: Gigawit ISP tool
Note:
1. The fourth step Write in the transmission and reception of Native ID and paired ID is
crossed.
GWK5 Module
RXD
USB to UART
TXD
TXD
GND
RXD
GND
J1
Short for ISP
R1
4.7K
Figure [4]: Gigawit ISP Connection
©2008-2012 Gigawit Electronics Ltd.
Version 1.0
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GWK5NO Applications Notes
4. Pairing
GWK5Nx support ID matching to enable multi TX/RX operating in a same area. The RX will
only receive the paired TX audio signals. To pair the TX and RX module, follow the below
steps:
1)
Power on the TX and RX Module. The TX/RX LED will keep solid for 5 seconds, and then
turn into Idle Mode and flash slowly.
2)
Press the TX key long than 10 seconds Until the LED change into flashing fast. Release
the key.
After this, The TX Module will stay into Pairing Mode for 30 seconds until it find the RX
(the RX must be in Pairing Mode in 30 seconds, see Step 3).If the TX found the RX in 30
seconds and paired, the LED will turn to solid and quit the Pairing Mode, or it will be time
out after 30 seconds and turn the Pairing Mode into the Idle Mode.
3)
Press the RX key long than 10 seconds Until the LED change into flashing fast. Release
the key.
After this, The RX Module will stay into Pairing Mode for 30 seconds until it find the TX
(the TX must be in Pairing Mode, see Step 2) If the RX found the RX in 30 seconds and
paired, the LED will turn to solid and quit the Pairing Mode, or it will be time out after 30
seconds and turn the Pairing Mode into the Idle Mode.
4)
When the TX and the RX are paired, The TX/RX LED will stay in solid. the RX can receive
the TX signal.
Key
LED
Base
Band
KeyPressed
>10s
KeyReleased
5s
IdleMode
PowerOn
SolidLine:Paired DottedLine:
PairingFailed
PairingMode
≤30s
Figure [5]: Key and LED Timing at pairing mode
©2008-2012 Gigawit Electronics Ltd.
Version 1.0
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GWK5NO Applications Notes
5. Ordering Information
Gigawit ID.
Description
GWK5NO
0dBm RF Power module
6. Contact
捷电科技有限公司 Gigawit Electronics Limited
512 Building R2-A, Virtual University ，Science Park,
Nanshan District, 518057 Shenzhen, China
Tel:+86-755-86329300, Fax:+86-755-86329882
http://www.gigawit.com
7. Revision History
2011-8-22
Version 1.0, Original version
©2008-2012 Gigawit Electronics Ltd.
Version 1.0
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