Company confidential
User Guide
ARD-AUDIO-DA7212 Audio Shield
UG-ARD-AUDIO-DA7212
UG-ARD-AUDIO-DA7212
ARD-AUDIO-DA7212 Audio Shield
Company confidential
Contents
1
2
3
4
5
Terms and definitions ........................................................................................................... 3
References ........................................................................................................................... 3
Introduction ......................................................................................................................... 4
Summary .............................................................................................................................. 5
ARD-AUDIO-DA7212 Hardware Description ........................................................................... 6
5.1
5.2
5.3
5.4
DA7212 Audio Codec ............................................................................................................ 6
Power Supply ........................................................................................................................ 6
MCLK Source ......................................................................................................................... 6
Interfaces .............................................................................................................................. 7
5.4.1
5.4.2
5.5
I2S ............................................................................................................................. 7
I2C ............................................................................................................................. 7
I/O Connectors ...................................................................................................................... 8
5.5.1
5.5.2
5.5.3
AUX_IN...................................................................................................................... 8
HEADSET ................................................................................................................... 8
MIC (on-board) ......................................................................................................... 8
5.6
5.7
6
7
Quick Reference .................................................................................................................... 9
Inter-board Connections ..................................................................................................... 11
ARD-AUDIO-DA7212 Schematic ............................................................................................12
ARD-AUDIO-DA7212 Bill of Materials ...................................................................................14
7.1
7.2
Order BOM .......................................................................................................................... 15
Build BOM ........................................................................................................................... 17
8
Revision history ...................................................................................................................21
Application note
CFR0011-XXX-00 Rev 1
Revision 1.0
2 of 21
26-Feb-14
© 2014 Dialog Semiconductor GmbH
UG-ARD-AUDIO-DA7212
ARD-AUDIO-DA7212 Audio Shield
Company confidential
1 Terms and definitions
AUX_IN
BCLK
BOM
GND
GPIO
I2C
I2S
IC Recorder
MCLK
MCU
MEMS
MIC
PCB
TRS
TRRS
Unpop
WCLK
Auxiliary Input
Bit Clock
Bill of Materials
Ground reference
General Purpose Input Output
Inter-Integrated Circuit
Inter-Integrated Circuit Sound
Integrated Chip (voice) Recorder
Master Clock
Micro-controller Unit
Micro-Electrical Mechanical System (refers to microphones)
Microphone
Printed Circuit Board
Tip-Ring-Sleeve (refers to the connector arrangement of the three-pin audio jack)
Tip-Ring-Ring- Sleeve (refers to the connector arrangement of the four-pin audio
jack)
Unpopulated
Word Clock
2 References
1.
2.
3.
4.
ARD-AUDIO-DA7212 schematics, layout & software, Dialog Semiconductor
Arduino MCU platform and related material, Arduino
Freedom MCU platform and related material, Freescale
Galileo MCU platform and related material, Intel
Application note
CFR0011-XXX-00 Rev 1
Revision 1.0
3 of 21
26-Feb-14
© 2014 Dialog Semiconductor GmbH
UG-ARD-AUDIO-DA7212
ARD-AUDIO-DA7212 Audio Shield
Company confidential
3 Introduction
The ARD-AUDIO-DA7212 is an audio ‘Shield’ Module that can be used with a number of Arduino
compatible MCU platforms. The ARD-AUDIO-DA7212 Shield features the Dialog DA7212 audio
codec.
DA7212 is an ultra-low power audio codec ideal for standalone audio/video digital processors,
IC recorders and many other portable applications. The audio front-end simultaneously supports
stereo FM line input with four analogue (or two analogue and two digital) microphones with two
independent microphone biases. Comprehensive analogue mixing and bypass paths to the output
drivers are available. The headphone output is true-ground Class G with integrated charge pump.
There is also a differential Class AB speaker driver that can serve as a mono lineout.
The features of the ARD-AUDIO-DA7212 Audio Shield are:
●
●
●
●
DA7212 two-channel audio codec with capless headphone driver for portable media players
3.5mm stereo AUX input jack socket
Smartphone-compatible HEADSET connection on a 4-pole, 3.5mm jack socket
Interchangeable GND and MIC routing to the smartphone jack allows multiple headsets to be
supported
KL16)
●
Compatible with the
Freescale Freedom Development Platform
(for KL46, KL36, KL26, and
Figure 1: ARD-AUDIO-DA7212
Application note
CFR0011-XXX-00 Rev 1
Revision 1.0
4 of 21
26-Feb-14
© 2014 Dialog Semiconductor GmbH
UG-ARD-AUDIO-DA7212
ARD-AUDIO-DA7212 Audio Shield
Company confidential
4 Summary
This document provides information about the ARD-AUDIO-DA7212 that will enable you to use it with
the many Arduino-compatible MCU platforms available on the market.
●
Freescale Freedom Platform:
http://www.freescale.com/webapp/sps/site/overview.jsp?nodeId=015210045A
●
Arduino platform:
http://arduino.cc/en/
●
Intel Galileo platform:
http://www.intel.com/content/www/us/en/intelligent-systems/galileo/galileo-overview.html
This document is limited to detailing the hardware of the ARD-AUDIO-DA7212 board only. It should
be used in conjunction with the DA7212 datasheet and the MCU platform hardware and software
User Guide for system level compatibility and operation.
The ARD-AUDIO-DA7212 offers a great flexibility. Please note, however, that there are a number of
sections of the board that are not populated by default. The details of the missing components for
order and population can be found in the Bill of Materials section (see section
7).
Application note
CFR0011-XXX-00 Rev 1
Revision 1.0
5 of 21
26-Feb-14
© 2014 Dialog Semiconductor GmbH
京公网安备 11010802033920号
EEWORLD
