---
title: Common Questions and Answers for WiFi Audio + Bluetooth Modules
description: This document summarizes common technical questions and answers regarding wireless WiFi modules and Bluetooth modules, including IR remote decoding, power consumption, chip architecture, TX/RX switching, Bluetooth TWS, etc., to help developers quickly locate and solve problems.
keywords: 8711, wireless speaker, IR remote, module power consumption, WIFI BT chip, TX RX switching, Bluetooth TWS, technical FAQ
---

--8<-- "common/phaten_xmos_support_img.md"

# Technical FAQ for WiFi Audio + Bluetooth Modules

## Q1: Does the module support IR remote decoding?

**IR remote decoding is supported.**

---

## Q2: Power consumption during module operation and standby

=== "Sleep Mode 1"
    - **Operating state**: Both TX/RX are in sleep, WiFi is off, TX and RX BLE are working
    - **How to enter sleep**:
        - The application actively calls the Sleep interface
        - Automatically enters after detecting no I2S data for a period of time
    - **Wake-up method**:
        - UART/GPIO interrupt wakes up TX → TX wakes up RX
        - UART/GPIO interrupt wakes up RX → RX wakes up TX (bi-directional wake-up)
    - **Current**:
        - 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 are off
    - **How to enter sleep**:
        - The application actively calls the Sleep interface
        - Automatically enters after detecting no I2S data for a period of time
    - **Wake-up method**:
        - The application calls the playback interface (TX automatically wakes up RX)
        - RX is automatically woken up when I2S data is detected
    - **Current**: RX ≤1mA

---

## Q3: What is the WIFI and BT chip architecture of the module?

A single SoC integrates both WIFI and BT functions.

---

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

### Support status:
- Supports online TX/RX switching in WIFI mode
- BT mode limitations:
  - SoC only supports BLE5.0
  - Does not support Classic BT
  - Cannot transmit audio via mobile phone Bluetooth

### Working mode description:

=== "**TV Mode**:"
     - The transmitter box is WIFI TX
     - The receiving speakers are dual RX (left/right channels)

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

=== "**BT Mode**:"
     - Left speaker:
       * Receives mobile phone signal via BT
       * Simultaneously acts as WIFI TX to transmit to the right speaker
     - Right speaker: pure WIFI RX mode

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

---

## Q5: Bluetooth TWS function implementation

- **Native Bluetooth TWS is not supported**
- **Alternative solution**:
  - In BT mode, the left speaker (with IR receiver) acts as TX
  - Transmits the right channel to the right speaker via TWS
  - The right speaker (without IR receiver) acts as RX to receive the TWS signal

![TWS Solution](/assets/images/faq/wifiaudio_bl/FCM362K_problem_5en.png)

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## Consultation and Feedback

<details>
<summary>Click to expand consultation feedback form</summary>

--8<-- "common/customer_form.md"

</details>