AMSCO AS3514

austriamicrosystems
AS3514 V12
Product Brief
Product Brief
AS3514
Stereo Audio Codec with System Power Management
1 General Description
The AS3514 is a low power stereo audio codec and is
designed for Portable Digital Audio Applications. It allows
playback in CD quality and recording in FM-stereo quality. It
has a variety of audio inputs and outputs to directly connect
electret microphones, 16Ω headset, 4Ω speaker and auxiliary
signal sources via a 10-channel mixer. It only consumes 22mW
in playback mode.
Further the device offers advanced power management
functions. All necessary ICs and peripherals in a flash based
Digital Audio Player are supplied by the AS3514. The power
management block generates 9 different supply voltages out of
the battery supply. CPU, NAND flash, SRAM, memory cards,
LCD back-light, USB RX/TX can be powered. The different
supply voltages are programmable via the serial control
interface. It also contains a charger and is designed for battery
supplies from 1V to 5V.
The AS3514 has an on-chip, phase locked loop (PLL)
controlled, clock generator. It generates 44.1kHz, 48kHz and
other sample rates defined in MP3, AAC, WMA, OGG VORBIS
etc. No additional external crystal or PLL is needed. Further the
AS3514 has an independent 32kHz real time clock (RTC) on
chip which allows a complete power down of the system CPU.
2 Key Features
Multi-bit Sigma Delta Converters
– DAC: 18bit with 94dB SNR (‘A’ weighted) , 48kHz
– ADC: 14bit with 82dB SNR (‘A’ weighted), 16kHz
2 Microphone Inputs
– 3 gain pre-setting (28dB/34dB/40dB) with AGC
– 32 gain steps @1.5dB and MUTE
– supply for electret microphone
– microphone detection
– remote control by switch
2 Line Inputs
– volume control via serial interface
– 32 steps @1.5dB and MUTE
– stereo or 2x mono or mono differential
Line Outputs
– volume control via serial interface
– 32 steps @1.5dB and MUTE
– 1Vp @10kΩ
Audio Mixer
– 10 channel input/output mixer with AGC
– mixes line inputs and microphones with DAC
– left and right channels independent
www.austriamicrosystems.com
High Efficiency Headphone Amplifier
– volume control via serial interface
– 32 steps @1.5dB and MUTE
– 2x40mW @16Ω driver capability
– headphone and over-current detection
– phantom ground eliminates large capacitors
High Power Speaker Amplifier
– volume control via serial interface
– 32 steps @1.5dB and MUTE
– 2x500mW @8Ω driver capability
– over-current detection
Power Management
– step up for system supply (3.0V – 3.6V)
– step down for CPU core (0.85V – 1.8V, 250mA)
– step up for backlight (15V, 38.5mA)
– LDO for digital supply (2.9V, 200mA)
– LDO for analogue supply (2.9V, 200mA)
– LDO for peripherals (1.7V-3.3V, 200mA)
– LDO for peripherals (3.1V-3.3V, 200mA)
– LDO for RTC (1.0V-2.5V, 2mA)
– LDO for USB 1.1 transceiver (3.26V, 10mA)
– battery supervision
– 10sec emergency shut-down
Battery Charger
– automatic trickle charge (50mA)
– prog. constant current charging (100-400mA)
– prog. constant voltage charging (3.9V-4.25V)
Real Time Clock
– ultra low power 32kHz oscillator
– 32bit RTC sec counter
– selectable alarm (seconds or minutes)
General Purpose ADC
– 10bit resolution
– 16 inputs analogue multiplexer
Interfaces
– I²S digital audio interface
– 2 wire serial control interface
– watchdog via serial interface
– power good pin
– 128bit unique ID (OTP)
– 17 different interrupts
Package CTBGA64 [7.0x7.0x1.1mm] 0.8mm pitch
3 Application
Portable Digital Audio Player and Recorder
PDA, Smartphone
Revision 1.01
1-3
www.austriamicrosystems.com
Revision 1.01
Line_In1
MIC1SUP
1.5V vs. HGND
+ dedection
10-Bit, self clocked
ADC
to I2C
MIC Supply
MIC1
Off/28/34/40dB
AGC 29dB/Off
MIC1P
MIC1N
2*32 steps 1.5db
Mute/-34.5..12db
15V BACK Light
Step Up
MUX
IRQ
MIC2SUP
MIC2
Off/28/34/40dB
AGC 29dB/Off
MIC2P
stereo / mono diff.
MIC2N
LIN1R
Line_In2
LRCK
stereo / mono diff.
P_PVDD
LIN1L
MCLK
LIN2L
AGND
14-Bit / 16ks
Stereo Gain
ZAPEN
LIN2R
VREF
Stereo
ADC
ZAPOE
LRCK
PROG
I2S
CSCL
Charger
2*32 steps 1.5db
Mute/-34.5..12db
Stereo Gain
2*32 steps 1.5db
Mute/-34.5..12db
Stereo Gain
2*32 steps 1.5db
Mute/-34.5..12db
Stereo Gain
2*32 steps 1.5db
Mute/-34.5..12db
Stereo Gain
2*32 steps 1.5db
Mute/-34.5..12db
Stereo Gain
50mA trickle charging
100 - 400mA const. current charging
3.9 - 4.25V const. voltage charging
18 bit
Stereo DAC
CSDA
SCLK
DVSS
UVDD
3.26V fix
LDO6
Σ
CPVDD
3.1 or
3.3V
LDO4
DCDC buck
0..-46.5dB
2*32steps +
mute
Line_Out
AGC
CVDD prog. via P_CVDD
analog input
(0.85- 1.8V)
VDDC1
SDO
DVDD
RVDD
prog. via
PCP
(1- 2.5V)
XOUT
32kHz Osc +
32Bit second
counter
(I2C register)
XIN
I2C
VSSC1
SDI
128Bit
Fuse
Array
RVDD
References
CPVDD
WDOG
POR
PLL
LX_C1
LDO5
CVDD
RTC
[email protected]
mute / 32*1.5dB Gain
ShortDet 200mA
HPH_AMP
2*500mW @4Ω
[email protected] mono diff.
mute / 32*1.5dB Gain
ShortDet 700mA
SP_AMP
AVDD 2.9V fix
LDO1
DVDD 2.9V fix
LDO2
prog. via P_PVDD
3.3 to 1.7, OFF
LDO3 (PVDD)
3.0, 3.1, 3.2 or 3.6V
DCDC boost
HPGND
BVSS2
HPG_CM
BVDD
HPH_R
BVSS2
HPH_L
BGND
BVDD
LSP_R
BVSS
LSP_L
BVDD
AVDD
QLDO2
PVDD
SW3
VSS3
VB1V
Figure 1
PWR_UP
PWGOOD
AS3514 V12
Product Brief
austriamicrosystems
4 Block Diagram
AS3514 Block Diagram
LOUT_L
LOUT_R
VTRM
UVDD
CHG_OUT
CHG_IN
BATTEMP
ISINK
VSS15
SW15
P_CVDD
2-3
austriamicrosystems
AS3514 V12
Product Brief
5
Copyright
Copyright © 1997-2007, austriamicrosystems AG, Schloss Premstaetten, 8141 Unterpremstaetten, Austria-Europe. Trademarks
Registered ®. All rights reserved. The material herein may not be reproduced, adapted, merged, translated, stored, or used without the
prior written consent of the copyright owner.
All products and companies mentioned are trademarks of their respective companies.
6 Disclaimer
Devices sold by austriamicrosystems AG are covered by the warranty and patent identification provisions appearing in its Term of Sale.
austriamicrosystems AG makes no warranty, express, statutory, implied, or by description regarding the information set forth herein or
regarding the freedom of the described devices from patent infringement. austriamicrosystems AG reserves the right to change
specifications and prices at any time and without notice. Therefore, prior to designing this product into a system, it is necessary to check
with austriamicrosystems AG for current information. This product is intended for use in normal commercial applications. Applications
requiring extended temperature range, unusual environmental requirements, or high reliability applications, such as military, medical lifesupport or life-sustaining equipment are specifically not recommended without additional processing by austriamicrosystems AG for each
application.
The information furnished here by austriamicrosystems AG is believed to be correct and accurate. However, austriamicrosystems AG
shall not be liable to recipient or any third party for any damages, including but not limited to personal injury, property damage, loss of
profits, loss of use, interruption of business or indirect, special, incidental or consequential damages, of any kind, in connection with or
arising out of the furnishing, performance or use of the technical data herein. No obligation or liability to recipient or any third party shall
arise or flow out of austriamicrosystems AG rendering of technical or other services.
7 Contact Information
Headquarters:
austriamicrosystems AG
Business Unit Communications
A 8141 Schloss Premstätten, Austria
T. +43 (0) 3136 500 0
F. +43 (0) 3136 5692
[email protected]
For Sales Offices, Distributors and Representatives, please visit:
www.austriamicrosystems.com
austriamicrosystems
www.austriamicrosystems.com
– a leap ahead
Revision 1.01
3-3