phaten-audio/en/docs/dev_doc/faq/technical_faq/technical_faq.md

---
title: WiFi Audio Speaker + Bluetooth Module FAQ
description: This document compiles common technical questions and answers regarding wireless WiFi modules and Bluetooth modules in areas such as infrared remote control, power consumption, chip architecture, TX/RX conversion, Bluetooth TWS, etc., helping developers quickly locate and resolve issues.
keywords: 8711, wireless speakers, infrared remote control, module power consumption, WiFi BT chip, TX RX conversion, Bluetooth TWS, technical FAQ
---

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# WiFi Audio Speaker + Bluetooth Module Technical FAQ

## Q1: Does the module support infrared remote control decoding?

**Yes, infrared decoding functionality is supported.**

---

## Q2: Module power consumption during operation and standby

=== "Sleep Mode 1"
    - **Operating State**: TX/RX both sleep, WiFi off, TX and RX BLE operational
    - **Sleep Entry Method**:
        - Application actively calls Sleep interface
        - Automatically enters after detecting no I2S data for a period
    - **Wake-up Method**:
        - UART/GPIO interrupt wakes TX → TX wakes RX
        - UART/GPIO interrupt wakes RX → RX wakes TX (bidirectional wake-up)
    - **Current Draw**:
        - Unidirectional wake-up: TX ≤1mA, RX ≤3mA
        - Bidirectional wake-up: TX ≤3mA, RX ≤3mA

=== "Sleep Mode 2"
    - **Operating State**: TX WiFi does not sleep, RX WiFi sleeps, TX/RX BLE off
    - **Sleep Entry Method**:
         - Application actively calls Sleep interface
         - Automatically enters after detecting no I2S data for a period
    - **Wake-up Method**:
        - Application calls playback interface (TX automatically wakes RX)
        - Automatically wakes RX when I2S data is detected
    - **Current Draw**: RX ≤1mA

---

## Q3: Module WiFi and BT chip architecture

Uses a single SoC chip integrating WiFi and BT functionality.

---

## Q4: Does it support online TX/RX conversion?

### Support Status:
- Supports TX/RX online conversion in WiFi mode
- BT mode limitations:
    - SoC only supports BLE 5.0
    - Does not support Classic BT
    - Cannot transmit audio via mobile phone Bluetooth

### Operating Mode Description:

=== "**TV Mode**:"
     - Transmitter box is WiFi TX
     - Receiver speakers are dual RX (left/right channels)

     ![TV Mode](/assets/images/faq/wifiaudio_bl/FCM362K_problem_4-1.png)

=== "**BT Mode**:"
     - Left speaker:
         - Acts as BT receiver for mobile phone signal
         - Simultaneously acts as WiFi TX to transmit to right speaker
     - Right speaker: Pure WiFi RX mode

     ![BT Mode](/assets/images/faq/wifiaudio_bl/FCM362K_problem_4-2.png)

---

## Q5: Bluetooth TWS function implementation

- **Does not support** native Bluetooth TWS functionality
- **Alternative Solution**:
  - Left speaker (with remote control receiver) acts as TX in BT mode
  - Transmits right channel to right speaker via TWS method
  - Right speaker (without remote control receiver) acts as RX to receive TWS signal

![TWS Solution](/assets/images/faq/wifiaudio_bl/FCM362K_problem_5.png)


## Contact and Feedback
<details>
<summary>Click to expand contact and feedback form</summary>

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</details>


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