Harman International Industries Inc MB8811VMA Manual De Usuario

 

 
 
 
MB8811C1B is a Bluetooth Stereo module which can be used to design Bluetooth 
speakers. Besides,  MB8811C1B can be as a direct connection to any Bluetooth 
mobile phone when designed into speakers and stereo headphones. 
 
Host Controller Interface 
- UART 
This is a standard Universal Asynchronous Receiver Transmitter (UART) 
interface for communicating with Host. 
 
principle of operation with Microcontroller 
The microcontroller (like BX8805), interrupt controller and event timer run the 
Bluetooth software stack and control the radio and host interfaces. A 32 bit 
ARM based microcontroller is used for low power consumption and efficient use of 
memory. This MCU contain full Bluetooth software stack. 
 
EEPROM 
It contain basic information for address, name and RF information so that 
Microcontroller read and set value for corresponding block. 
 
 
Audio Interface 
Although MB8811C1B contain PCM interface for Audio, it does not decode audio 
directly, all encoded audio streaming would be decoded at Microcontroller. 
 
 
Clock Input and Generation 
The reference clock for the system is generated from a TCXO or crystal 
input 26MHz. All internal reference clocks are generated using a phase 
locked loop, which is locked to the external reference frequency. 
 
Radio 
Common TX/RX terminal simplifies external matching; eliminates external 
antenna switch. 
BIST minimises production test time. No external trimming is required in 
production 
Full RF reference designs available 
Bluetooth 4.0 Specification compliant 
 
Bluetooth Software Stacks 
CSR’s Bluetooth Protocol Stack runs on the on-chip and MCU in a variety of 
configurations: