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Dual-mode Bluetooth audio module
Dual-mode Bluetooth audio module
Dual-mode Bluetooth audio module
Dual-mode Bluetooth audio module
Dual-mode Bluetooth audio module
Dual-mode Bluetooth audio module
EWM104-BT61SP Module audio Bluetooth double mode prenant en charge l'audio LE et le Bluetooth classique

[Interface de communication]：UART

[Fréquence]： 2,4 GHz

[Protocole Bluetooth]：BLE 5.4

[Portée]：160 m

[Dimensions]：14*22 mm

[Poids]：1,1± 0,1 g

[Introduction]：Le module EWM104-BT61SP est un émetteur-récepteur audio Bluetooth double mode basé sur Bluetooth 5.4 et doté d'une interface d'antenne PCB. Il prend en charge l'audio LE, le Bluetooth classique et le Bluetooth stéréo, et offre une puissance d'émission maximale de 8 dBm. Ce module est compatible avec les commandes AT pour la configuration des paramètres, la diffusion de type « un à plusieurs », l'entrée d'une carte son USB, l'entrée sans fil Bluetooth et l'entrée de signaux analogiques double canal. Il prend également en charge la sortie de signaux analogiques double canal et la diffusion sans fil Bluetooth, pour une utilisation simple et rapide.

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PIN
Pin number Pin Definitions Pin direction Pin Function illustrate
1 WKP enter Sleep pin The sleep/wake pin is left floating by default. Holding it at a low voltage for more than 3 seconds will switch between sleep and wake-up states.
2 D1 enter Address bit D1 Default pull-up
3 D2 enter Address D2 Default pull-up
4 GND - power ground
5 D3 enter Address D3 Default pull-up
6 D4 enter Address bit D4 Default pull-up
7 D5 enter Address D5 Default pull-up
8 D6 enter Address bit D6 Default pull-up
9 USB_DM Input/Output USB_D- USB differential data negative polarity
10 USB_DP Input/Output USB_D+ USB differential data positive polarity
11 SW enter Connection confirmed Used to confirm pairing; can be connected to a button; defaults to pull-up;  effective on falling edge.
12 GND - power ground
13 TX/RX enter Transmit/Receive Mode Settings This port operates in receive mode when left floating, and in transmit mode when connected to GND.
14 LINK Output Connection status output indication TX: A periodic double flashing pattern with a 5-second cycle of 300ms on, 100ms off, and 300ms on again.
RX: Before receiving, it flashes periodically for 0.5 seconds on and 0.5 seconds off, with a period of 1 second. After receiving the broadcast, the flashing pattern is the same as TX.
15 UART_RXD enter Serial port RXD TTL input, connected to the external TXD output pin
16 UART_TXD Output Serial port TXD TTL output, connected to external RXD input pin
17 MUTE Output Power amplifier enable pin -
18 AGND - Simulated land audio signal ground
19 OUT_R Output Right channel audio output The output has a DC component, so an external DC blocking capacitor is required.
20 OUT_L Output Left channel audio output The output has a DC component, so an external DC blocking capacitor is required.
21 LINE_IN enter Audio input detection Pull-up by default, active low.
22 IN_R enter Audio right channel input
23 IN_L enter Audio left channel input
24 GND - power ground
25 KEY1 enter Play/Pause Active low, momentary low level plays/pauses
26 KEY2 enter Volume down/Previous track Active low level; falling edge switches to the previous track; volume decreases if low level is maintained for more than 1 second.
27 KEY3 enter Volume up/Next track Active low level, falling edge switches to the next track, volume increases if low level is maintained for more than 1 second.
28 VPWR enter charging pin Operating voltage: 4.5V~5.5V
29 VBAT enter Battery power supply pin Operating voltage 3.0V~4.4V, this pin can be connected to a battery for power supply.
30 IOVDD Output IO voltage 3.4V Used for powering peripherals, maximum current 120mA
31 GND - power ground
32 GND - power ground