REVO SoundStage Circuit Description

| marzo 26, 2018

REVO SoundStage Circuit Description

  • Product: Bluetooth Speaker
    Brand Name: REVO
    Model Number: SOUNDSTAGE
    Rating: Input: 100-240Va.c. 50/60Hz 1.5A;
    Output: 18Vd.c. 3300mA.

The AC/DC adaptor was provided by the applicant with following details: Brand name: GPE; Model no.: GPE060D-180330D

The Equipment is an Bluetooth Speaker. The transmission signal is digital modulated with channel frequency range 2402-2480MHz. The R.F. signal was modulated by IC; the type of modulation used was frequency hopping spread spectrum Modulation.

  • Module Transmission Type: Bluetooth 4.0+EDR
  • Modulation: GFSK
  • Data Rates: 1Mbps
  • Frequency Range: 2400-2483.5MHz
  • Carrier Frequencies: 2402MHz – 2480MHz
  • Antenna Type: PCB antenna
  • Antenna Gain: 2.12 dBi

SOUNDSTAGE WORKING PRINCIPLE

SOUNDSTAGE is a multi-media includes the main features Bluetooth / Aux in / RCA in/ Optical.

1.    MCU Mc96f6332d is the main control for the unit and all operation commands are sent by it.


Mc96f6332d is advanced CMOS 8-bit microcontroller with 32k bytes of FLASH. This is a powerful microcontroller which provides a highly flexible and cost effective solution to many embedded control applications. This provides the following features : 32k bytes of FLASH, 256 bytes of IRAM, 768 bytes of XRAM, general purpose I/O, basic interval timer, watchdog timer, 8/16-bit timer/counter, 16-bit PPG output, 8-bit PWM output, 10-bit PWM output, watch timer, buzzer driving port, SPI, USI, 12-bit A/D converter, LCD driver, on-chip POR, LVR, LVI, on-chip oscillator and clock circuitry. also supports power saving modes to reduce power consumption. Manual : UM_MC96F6432_V16.pdf

2.    The Audio part used TPA5731M Class-D amplifier. Et2314 is using as an audio switch that is controlled by MCU Mc96f6332d can switch audio signal channel of which include Aux in, RCA in, Bluetooth, Optical in order to play different audio sources.

3.    In Bluetooth mode (use GWB8P BT. module) , pair other Bluetooth devices with the Bluetooth of this unit can play the music in the devices through the unit. Via MCU can control playback for PREVIOUS TRACK /NEXT TRACK / PAUSE / STOP.

Remark:

Module Transmission Type: Bluetooth V4.2 The EUT continues to transmit while power on. Modulation by IC, type is GFSK,n/4-DQPSK, 8DPSK modulation. The antenna type is onboard PCB meander line antenna, antenna gain is 2.12dBi.

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