AKM AKD7756-HF User Manual Download Page 1

 

 

   [AKD7756-HF] 

<KM101400>  

2010/06 

 

- 1 - 

 

 

GENERAL DESCRIPTION 

AKD7756-HF is a Hands-free evaluation kit for the AK7756 which is an audio processor with PCM 
interface, EEPROM interface, mono voice audio CODEC and microphone pre-amplifier. A speaker 
amplifier is integrated in this evaluation kit for easy evaluation of Hands-free function by connecting 
external microphones and speaker units. It is possible to access to the AKD7756-HF via USB interface, 
and adjustment of voice quality and noise attenuation level can be made with Windows GUI applications. 
An external Flash Memory for DSP programming is integrated into this kit enabling a stand-alone 
operation. In addition, an easy connection to a mobile phone is provided by integrated Blue Tooth module 
for evaluations.  

 

 Ordering guide 

AKD7756-HF 

 

AK7756 Hands Free System (HFS) Box 

 

USB Control Adapter 

 Monitoring 

Board 

 

AD-DC Converter for main power supply 

 Control 

Soft 

 

FUNCTION 

 

†

Write/Read access to PRAM, CRAM, OFREG and control registers of AK7756 

†

 

In/Output Ports: MIC-IN/SPK-OUT/S-AMPOUT/TEL-IN/TEL-OUT  

†

 

Flash Memory (EEPROM) for parameter storage and stand-alone operation 

†

 

Blue-Tooth transceiver 

 

 

Monitor Board 

AKD7756-HFS

 

BT-Transceiver 

AK 

7756 

AK 

2300 

Xilinx 

EEPRO

Wireless 

Wired

Control Box 

PC 

AK7835 

 

 

AK7756 Hands Free Evaluation Rev.0

AKD7756-HF

Summary of Contents for AKD7756-HF

Page 1: ...An external Flash Memory for DSP programming is integrated into this kit enabling a stand alone operation In addition an easy connection to a mobile phone is provided by integrated Blue Tooth module...

Page 2: ...AKD7756 HF KM101400 2010 06 2 BOARD DIAGRAM Front Panel 1 2 3 4 5 6 7 8 9 Rear Panel 10 11 12 13 Main Board 14 15 16...

Page 3: ...JX1 push switch Human Interface Function JX Push H Release L 8 HOOK push switch Bluetooth Unconnected The AKD7756 becomes stand by sate when pushing this switch for seven seconds Bluetooth connected...

Page 4: ...CK AK7756 LRCK Input 4 BT BICK AK7756 BICK Input 5 GND Ground Table 1 Main Board Functions Bold Default Setting USB Control Adapter USB to 10 pin flat Box TheAKD7756 HF should be connected to a PC via...

Page 5: ...ill be displayed Select the registered machine and connect them when power on the AKD7754 HF next time The peripheral search flow will not be the same way depending on a mobile phone ex A password for...

Page 6: ...Device on the PC When it can not be recognized correctly e g recognized as an unknown device please push the reset button yellow of the USB control box 4 Insert the attached CD ROM into the CD ROM dr...

Page 7: ...the HF program Table 2 AK7756 Code Area Note 1 Setting programs can be provided by AKM on request The setting can be made by SCRIPT writing mode of the GUI Figure 3 Control S W Script tab screen Figu...

Page 8: ...9Eh C 3A2h 1st Band C 1ECh C 1F0h 2nd Band C 1F1h C 1F5h 3rd Band C 1F6h C 1FAh 4th Band C 1FBh C 1FFh MIC_IN_PEQ MIC Filter 2 band IIR fixed 4 band IIR variable Fix Band C 3A4h C 3A8h Fix Band C 3A9h...

Page 9: ...ion setting to the DSP Set the initial address of the PEQ band which need to be modified to ADDR Set quality factor of the filter to Q Set a cutoff frequency of the filter to FREQ Use the Type pull do...

Page 10: ...ree setting In this instruction manual CRAM addresses are expressed as C xx Address 4Ch is shown below as an example Example C 4Ch CRAM Address 4Ch A corresponding example to the CRAM file is shown be...

Page 11: ...lect Mon Slider tab 2 Push down the USE button to write this operation setting to the DSP First write the address to ADDR Without using the slid bar it is also possible to input the value to VAL Set t...

Page 12: ...AKM products are neither intended nor authorized for use as critical componentsNote1 in any safety life support or other hazard related device or systemNote2 and AKM assumes no responsibility for such...

Page 13: ...SDA SO XCONTROL XCONTROL SCL SCLK CTRL FRONT BT RST FRONT HOOK FRONT BT LED SDA CTRL DSP JX1 MON SDO SPDIF I2CSEL DSP SO BlueT SDO CODEC SDTO BlueT BICK BlueT LRCK CODEC SDTI CODEC BICK CODEC LRCK Bl...

Page 14: ...10V TA C5 10u 10V TA R5 51 R5 51 R3 51 R3 51 C8 33n C8 33n C4 22p C4 22p C10 1u 6 3V A C10 1u 6 3V A R12 100k R12 100k C13 0 1uF C13 0 1uF R9 51 R9 51 C12 10u 10V TA C12 10u 10V TA U1 AK7756 30pin VS...

Page 15: ...T C24 1uF T C24 1uF T C22 100pF C22 100pF C16 1uF T C16 1uF T C20 10uF T C20 10uF T C21 0 1uF C21 0 1uF U2B NJM2119 U2B NJM2119 5 6 7 8 4 R22 220 R22 220 C17 1uF T C17 1uF T RCA3 MR 552LS W RCA3 MR 55...

Page 16: ...heet of 1 0 A 4 9 Thursday November 19 2009 Title Size Document Number Rev Date Sheet of 1 0 A 4 9 Thursday November 19 2009 Title Size Document Number Rev Date Sheet of 1 0 A 4 9 Thursday November 19...

Page 17: ...09 Title Size Document Number Rev Date Sheet of 1 0 A 5 9 Friday October 30 2009 2 1 2 1 2 2 1 1 AKD7756 HF CODEC 2 1 2 1 2 1 CL1 Cut Land open CL1 Cut Land open 1 2 C34 0 1uF C34 0 1uF C33 1uF C33 1u...

Page 18: ...1 0 A 6 9 Friday October 30 2009 Title Size Document Number Rev Date Sheet of 1 0 A 6 9 Friday October 30 2009 Title Size Document Number Rev Date Sheet of 1 0 A 6 9 Friday October 30 2009 AKD7756 HF...

Page 19: ...ACK 1 L4 10uH 500mA L4 10uH 500mA C39 0 1uF C39 0 1uF C36 0 1uF C36 0 1uF C43 10uF T C43 10uF T REG5 7808 8V REG5 7808 8V OUT 2 GND 3 IN 1 C37 0 1uF C37 0 1uF C59 10uF 16V A C59 10uF 16V A C62 10uF T...

Page 20: ...of SPK AMP 1 0 AK7756 HF A4 8 9 Friday April 02 2010 S AMPOUT RCA5 MR 552LS W RCA5 MR 552LS W T B S C67 10uF T C67 10uF T R30 10k R30 10k U6 AK7835 U6 AK7835 VDD1 1 INN 2 VDD2 3 VSS2 4 INP 5 NC 10 VCP...

Page 21: ...PFI 4 PFON 5 WDI 6 RESETN 7 WDON 8 R46 51 R46 51 R40 51 R40 51 R43 51 R43 51 C79 0 1uF C79 0 1uF R53 51 R53 51 R56 51 R56 51 C82 10uF T C82 10uF T R33 10k R33 10k C72 0 01uF C72 0 01uF R39 51 R39 51 R...

Reviews: