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High quality stereo audio transmitter module unidirectional
Can only be transmitted to the receiving of listening to music can not do
Microphone is music transmission!
I hope to see clearly and then shopping thank you cooperation!
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One.
1 main chip: CSR5746 (BlueCore5-MM)
2 Bluetooth version: V4.0+EDR
3 output power: II Class
4.RF output power: 4dBm
5 transmission distance: sight distance of 10 meters
6.FLASH storage capacity: 8-16Mbit
The 7 section of the pin size: 55mm*37mm*2mm
8.Rohs standard: Meet
9 static current: 14-16 Ma
10 working current: 21-26 Ma
Two. Application
1 Bluetooth stereo audio transmitter
2 Bluetooth audio transmitter section
Three. Overview:
This module uses CSRBlueCore5-MM chip, suitable for Bluetooth audio transmitter, Bluetooth stereo audio transmitter and other products. The peripheral does not need the circuit, the module has the control key and the LED display, the user only needs to supply the electricity to be able to work as well as. This module has been set up to filter the Bluetooth device type, only with Bluetooth stereo headphones and speakers with A2DP protocol and other Bluetooth devices. When the module is not paired bluetooth stereo equipment, automatic search and connect power to the module to meet the requirements of the equipment, when the connection after the module will remember the Bluetooth device address code connection, disconnection or re power will automatically connect, such as the need to disconnect or re search equipment, please press the button on the module can.
New launch module 4 physical map:
Four. Product block diagram:
Five. Dimensions:
Note: lower left corner for the first leg
Six. Pin chart:
Seven pin description:
Pin number
Name
Remarks
One
GND
Reference level 0V
Two
LINEIN_L+
Left channel audio input differential input terminal
Three
GND
Reference level 0V
Four
LINEIN_L-
Left channel audio input differential input terminal
Five
GND
Reference level 0V
Six
LINEIN_R+
Right channel audio input differential input terminal
Seven
GND
Reference level 0V
Eight
LINEIN_R-
Right channel audio input differential input terminal
Nine
LED-
Led cathode
Ten
BT_RSETB
Module reset input terminal (can be suspended)
Eleven
BT_TX
Serial transmitter (reserved)
Twelve
+5V
Power input
Thirteen
BT_RX
Serial receiver (reserved)
Fourteen
GND
Reference level 0V
Fifteen
KEY
Button control input (can be achieved to disconnect the connection, re search function)
Sixteen
3.3V
When the twelfth foot has 5V input is, this pin for the module 3.3VLDO output pin, when the twelfth pin no input power, this pin as the module 3.3V power input pin
Remarks：
The audio input signal for advice, when the input is a single ended signal, the input end is connected with LINEIN_L+ and LINEIN_R+, LINEIN_L- and LINEIN_R- use jumpers and GND short circuit
+5V and 3.3V only need one of the input power supply can be.
Eight.LED display and button operation instructions:
LED control pin (output)
LED display:
Serial number
state
ON LED (MS)
OFF LED (MS)
One
Free (not connected)
One thousand
One hundred
Two
Search and match
One hundred
One hundred
Three
Connect OK
Long bright
nothing
Button control pin (input)
Clear matching information and re search and match the new equipment.
Stereo audio sampling rate (ADC):
8kHz?
11.025kHz?
16kHz?
22.05kHz?
24kHz?
32kHz?
44.1kHz?
Installation notes:
Bluetooth work in the 2.4G radio frequency band, should try to avoid the impact of various factors on the wireless transceiver, attention should be given to the