F MC-8FX FAMILY MB95200 SERIES BT Hand Free Demo
Contents
1. t rte ieri rere ike nbn Ee vbt creber a RE E 8 MCU AN 500057 E 10 Page 122. Fujitsu Microelectronics Shanghai Co Ltd Application Note FAMILY 8 BITMICROCONTROLLER MB95200 SERIES BT Hand Free Demo Reference Solution APPLICATION NOTE cO FUJITSU co BT Hand Free Demo Quick Start Guide V1 0 FUJITSU Hevision History Date Author Change of Records 2009 11 4 Kevin Lin This manual contains 10 pages The products described in this manual and the specifications thereof may be changed without prior notice To obtain up to date information and or specifications please contact your Fujitsu sales representative or Fujitsu authorized dealer Fujitsu will not be liable for infringement of copyright industrial property right or other rights of a third party caused by the use of information or drawings described in this manual The contents of this manual may not be transferred or copied without the express permission of Fujitsu The products contained in this manual are not intended for using for equipment which requires extremely high reliability such as aerospace equipment undersea repeaters nuclear control systems or medical equipment for life support Some of the products described in this manual may be strategic materials or special technology as defined by the Foreign Exchange and Foreign Trade Control Law In such cases the products or portions thereof must not be exported without permission as defined under the law 2009 Fujitsu Microelec
3. audio to FM radio MCU AN 500057 E 10 Page 4 co BT Hand Free Demo Quick Start Guide V1 0 FUJITSU 2 Demo Platform As shown in Figure 2 1 this demo is mainly made up of three parts MCU noise cancellation DSP and Bluetooth module When the Bluetooth hand free kit works it will receive the audio data from the mobile through Bluetooth module and transfer it to the audio DSP for echo cancellation on the other hand it will transfer the audio data from the microphone to the mobile Bluetooth Module d Th H 4 ET Figure 2 1 Bluetooth Hand Free Demo MCU AN 500057 E 10 Page 5 co BT Hand Free Demo Quick Start Guide V1 0 FUJITSU 3 Hardware 3 4 System Block Figure 2 1 shows the system block There are two editions One is a simple edition using MB95F214 Another is an advance edition using MB95F204 and with the functions of caller ID display and transferring the audio to the FM radio on the car MBo5F214 26 Audio gt Amplifier Microphone Bluetooth Noise Module suppresser Figure 3 1 System Block Diagram 3 2 Schematic Diagram In this system a compatible design was made The MCU can be MB95F214 or MB95F204 which will control audio DSP and Bluetooth module AK7742 is used to implement echo cancellation It is easily controlled by 12C bus When the DSP detected the echo noise it will immediately generate the inverted phase of this noise and impose to the output thu
4. he target name is ASC Master1 Select this name and match it with your phone security code is 0000 m Connection Follow the BT user manual of your phone to connect the BT car HF kit Dialing After BT is connected use the dialing function in your phone to dial out m User can directly talk to the HF kit m Hang up Press the hang up key in your phone can disconnect the call m Disconnecting Follow to the BT manual of your phone to disconnect the BT HF kit Please refer to Figure 5 1 to find the corresponding parts DOOD SuperHandsFree Figure 5 1 Bluetooth Hand Free Appearance MCU AN 500057 E 10 Page 10 co BT Hand Free Demo Quick Start Guide V1 0 FUJITSU 6 More Information For more information on FUJITSU MB95200 products please visit following website Simplified Chinese Version http www fujitsu com cn fmc services mcu mb95200 MCU AN 500057 E 10 Page 11 co BT Hand Free Demo Quick Start Guide V1 0 FUJITSU 7 Appendix Figure 2 2 Bluetooth Hand Free ere ciet 5 Figure 3 1 System Block Diagram totu tea 6 Figure 3 2 Blue Tooth Hand 7 Figure 5 1 Bluetooth Hand Free Appearance 10 Table 3 1 Pin Assignment
5. s cancel the noise at the output Figure 3 1 next page shows the schematic diagram MCU AN 500057 E 10 Page 6 BT Hand Free Demo Quick Start Guide V1 0 wa ninm desti m Figure 3 2 Blue Tooth Hand Free Kit MCU AN 500057 E 10 Page 7 co BT Hand Free Demo Quick Start Guide V1 0 FUJITSU 3 3 MCU Pin Assignment Table 3 1 shows the MB95F214 Pin Assignment in this system Number Pin Function 5 P04 Reset output for AK7742 6 P05 SCL of I2C bus 7 P06 SDA of I2C bus 8 P12 Reset output for Bluetooth module Table 3 1 Pin Assignment MCU AN 500057 E 10 Page 8 co BT Hand Free Demo Quick Start Guide V1 0 FUJITSU 4 Firmware For this demo the firmware just initializes the Bluetooth and DSP When the power is on MCU will reset the Bluetooth and the DSP first by a reset signal and then simulate 2 bus with two general I Os to communicate with DSP and Bluetooth Module Figure 4 1 shows the flow chart when use MB95F214 Initialize the MCU Reset Bluetooth module Reset AK7742 Configure Bluetooth Configure AK7742 Figure 4 1 Flow Chart MCU AN 500057 E 10 Page 9 co BT Hand Free Demo Quick Start Guide V1 0 FUJITSU 5 Operations m Matching Press the ON button for 5 seconds until the speaker sounds KA Then release the button The Bluetooth starts searching the BT facility around your mobile phone T
6. tronics Shanghai Co Ltd MCU AN 500057 E 10 Page 2 co BT Hand Free Demo Quick Start Guide V1 0 FUJITSU CONTENTS Revision rn M 2 JE 4 2 Demo PIalOEI eee 5 6 3d System Bl CK er 6 3 2 Schematic 6 3 3 MCU Pin Assigninient uu uu u ainni torent Ra EE 8 zd ne ae E UU TU 9 5 Op rati NnS J uyu uuu u ias aaen aaea aa Daa Enean anena naa 10 6 More Information e 11 7 FDO e awaa 12 MCU AN 500057 E 10 Page 3 co BT Hand Free Demo Quick Start Guide V1 0 FUJITSU 1 Outline The PRC new driving policy has been announced to avoid drivers to talk mobile phone directly and it creates an increasing need in Car Hand Free Kit The driver can communicate with the kit by turning on the Bluetooth in the mobile The kit will act as a hand free phone so that the driver can talk freely during driving This demo set has such features m Noisecancellation m Caller ID display m Transfer
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