Ezurio ACC-005 Скачать руководство пользователя страница 1 | Manualshive

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Ezurio ACC-005 Скачать руководство пользователя страница 1

Bluetooth Audio Development Pack

Winbond W681360 Codec Board

User Guide

Part Number ACC-005

The information contained in this document is subject to change without notice. EZURiO Ltd makes no warranty of any kind with
regard to this material including, but not limited to, the implied warranties of merchant ability and fitness for a particular purpose.
EZURiO Ltd shall not be liable for errors contained herein or for incidental or consequential damages in connection with the
furnishing, performance, or use of this material.

© Copyright 2006 EZURiO Limited. All rights reserved.

No part of this document may be photocopied, reproduced, or translated to another language without the prior written consent of
EZURiO.

Other product or company names used in this publication are for identification purposes only and may be trademarks of their
respective owners.

APN_06002_1v03 Winbond Audio Board Application Note

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Содержание ACC-005

Страница 1: ...EZURiO Ltd shall not be liable for errors contained herein or for incidental or consequential damages in connection with the furnishing performance or use of this material Copyright 2006 EZURiO Limite...

Страница 2: ...eadphone output which are compatible with standard PC headsets The W681630 codec has several features such as power down mode and high pass filter disable to allow frequencies down to DC to be used Th...

Страница 3: ...microphone signal is mixed into the headphone output signal via VR2 This feature is known as sidetone and allows the user to hear their own voice when speaking It is commonly used in telephony applica...

Страница 4: ...re is a jumper setting on the motherboard that needs to be checked This is CB1 next to the USB adaptor which must be removed If fitted it will short out the PCM output from the codec and prevent it op...

Страница 5: ...rientated link SCO for audio All this means is that for an audio link the bandwidth needed to maintain the data rates required by the audio link is pre allocated between the master and slave This ensu...

Страница 6: ...gh quality audio to be streamed in one direction eSCO offers significantly better audio quality but has to be configured at both ends of the link before a unit is enabled to accept incoming connection...

Страница 7: ...ock rate used for sampling is 250kHz 4 s 16 clock cycles takes 64 s 8kHz equates to 125 s The same timing is used for all packet types in both SCO and eSCO modes 5 Frequency Response 5 1 Codec Frequen...

Страница 8: ...bit only implements an up or a down shift relative to the previous level corruption of the MSB of a 13 bit sample would create a much larger error term than is possible with ADPCM A draw back of ADPC...

Страница 9: ...effective design but care must be taken to ensure that the 32 specification of load is met by selecting an appropriate headset Remove R10 R13 and R12 Fit R11 R9 R38 as zero ohm links Fit 39k in place...

Страница 10: ...the codec via MPIO_5 For AT commands MPIO_5 translates to GPIO 7 The put GPIO 7 into output mode use ats610 040 To turn the codec on use ats627 1 To turn the codec off use ats627 0 6 6 Alternative PC...

Страница 11: ...les gives the mapping between GPIO MPIO and RS232 signals RS232 Hardware DCD MPIO_3 RI MPIO_2 DTR MPIO_9 DSR MPIO_8 AT Command Hardware GPIO_1 MPIO_0 GPIO_2 MPIO_1 GPIO_3 MPIO_9 GPIO_4 MPIO_10 GPIO_5...

Страница 12: ...4832 232 L1 10uH Thin Film Inductor 1210 R1 R2 R5 R35 R36 R37 10K 1 Thick Film Resistor 0805 R3 R7 R8 R9 R11 R34 R38 0R Not Fitted 5 Thick Film Resistor 0805 R4 R6 R10 R12 R13 R33 0R 5 Thick Film Resi...

Страница 13: ...to cause the failure of the life support device or system or to affect its safety or effectiveness EZURiO does not assume responsibility for use of any of the circuitry described no circuit patent lic...

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