LC70701LG [ETC]
Sample shipment will begin in March 2009; 样品供货将于2009年3月
| 型号： | LC70701LG |
| 厂家： | 
ETC |
| 描述： | Sample shipment will begin in March 2009 |
| 文件： | 总4页 (文件大小：1166K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
T O P I C S
新 版 产 品 话 题
2009年3月18日版
减小封装面积82%
开发“用于耳机麦克的LSI”
用耳朵说话！?
实现只用耳机，解放双手进行通话之“耳机麦克用LSI”！
LC70701LG
2009年3月 样品开始上市！
生产计划：10万个/月
样品价格 800日元
支持小型移动设
备的高密度封装
耳机麦克的概要
振动板
耳机麦克是指什么？
耳垫
这是利用说话时由耳朵的鼓膜传输
微弱声音的原理，并起发出通常声
音作用的耳机，兼任拾音麦克的产
品。因在耳朵之内拾音，所以外部
鼓膜
接听
传输
声音不容易进入，具有在噪音状态
下能够轻松交流之好处。
在声带振动的同时，
接收由鼓膜传导出的
微弱的声音信号
发声
减小封装面积
第一代耳机麦
克LSI
第一代消除噪声
LSI
面积△82%
LC70701LG
6.0mm×6.0mm×0.8mm
传统产品
10.0mm×10.0mm×1.7mm
* 所登载的内容，包括价格和规格等全部是新闻发布时的内容。因内容可能与最新的信息不同，故请予原谅。
http://semicon.cn.sanyo.com/
三洋半导体公司
20090122－1/2
新版产品话题
用于耳机麦克的LSI
耳机麦克LSI的构造
将耳机麦克和消除噪声这两个
功能集成于单个芯片!
消耗电流减为70mA→18mA!
耳机麦克LSI的构造
LC70700W
DSP
数字信号处理部分
模拟信号处理部分
声音输出
• 回音消除
数字声音信号输入
D/A转换
A/D转换
防止对方声音
以回音形式返
回，清楚地传
输来自耳机的
声音。
耳机
声音输入
数字声音信号输出
在发声时，将由耳朵的鼓膜产生的微弱声音，在模拟信号处理部分进行放大并转换
为数字信号，在DSP部分进行回音消除等处理之后，再转换为模拟信号，直到输出声
音，这是在单芯片内进行一系列处理的产品。
主要规格
zDSP部分： •16bitDSP芯核
•STFD信号处理*1、滤波器处理、消除噪声
•省电模式(振荡停止 ⋅ PLL停止 ⋅ 切换高速运作⇔低速运作)
z主机CPU接口(4线式)：辅机(与GPIO0-3兼用)
z串行PCM接口(4线式)：主机/辅机：2系统(与GPIO4-7、GPIO8-11兼用)
I2S、长帧同步、短帧同步：支持Fs=8KHz
zGPIO：16端口(GPIO0-12与主机CPU接口、串行PCM接口兼用)
zA/D转换器(ΔΣ方式16bit ⋅ 8KHz)
zD/A转换器(ΔΣ方式16bit ⋅ 8KHz)
z内置麦克风放大器
z封装：FLGA68引脚(6.0mmx6.0mmx 0.8mm)
z电源(电压)：3电源(1.8V/2.8V：1.7V～3.6V(IO)、
2.8V：2.7V～3.6V(模拟)、
1.1V±10%(内部逻辑))
*1: STFD(SingleTransducer Full Duplex)信号处理是指用1张振动板为实现双向通话之一系列
的信号处理，即为了拾音耳朵内的声音之模拟信号处理和回音消除处理等。
http://semicon.cn.sanyo.com/
三洋半导体公司
20090122－2/2
T O P I C S
News Release Product Topics
Released on March 18,2009
“Earphone Microphone IC” developed
Mounting area reduced by 82%
Now you can use your ear to talk !
“Earphone microphone IC” that enable hands-free calls using only an earphone
LC70701LG
Sample shipment will begin in March 2009.
Production plan : 100,000pcs/month
Sample price : 800 yen
Enable high-
density mounting
of small-sized
mobile devices
Overview of earphone microphone
Diaphragm
What the “earphone microphone” does
Ear pad
Making use of the fact that very faint
sounds emanate from the eardrum while
we are taking, the earphone microphone
combines the expected functions of an
Eardrum
Receiving
earphone that outputs sound with the
microphone function that collects sound.
Sending
Since the unit collects the sound inside
the ear, this has the advantage of keeping
out exterior sounds, making it easy to hold
conversations even in noisy conditions.
The very faint audio
signals emanated from
the eardrum as the vocal
cords vibrate are picked
up by the diaphragm
Voice sound
Reduced package footprint
1st generation
earphone
microphone IC
1st generation
noise
canceller IC
Area Δ82%
LC70701LG
6.0mm x 6.0mm x 0.8mm
Conventional device
10.0mm x 10.0mm x 1.7mm
*The information presented in this product topics, including devics specifications, is current as of the date of the press release.
Note, however, that this information is subject to change without notice and thus at later dates the current state may differ in certain details from
the content presented here.
www.semiconductor-sanyo.com/network
20090318-1/2
Earphone microphone IC
Release Product Topics
How the earphone microphone IC works
Earphone
microphone and
noise canceller
functions integrated
on a single chip !
Current
consumption
slashed from 70mA
to 18mA!
STFD Earphone Microphone LSI
LC70700W
DSP
Digital signal processing block
Analog signal processing block
Digital audio
signal input
D/A
Audio output
• Echo canceller
conversion
This serves to prevent
the other party’s voice
from returning as an
echo, and clearly
conveys the sound
from the earphone.
Earphone
Digital audio
signal output
A/D
conversion
Audio input
This single IC performs a series of operations: As the user speaks, it uses the analog signal
processor to amplify the very faint audio signals arising from his or her eardrum, converts them into
digital signals, and then subjects them to echo canceling and other processes in the DSP, after
which it converts the signals back into analog signals and outputs audio sounds.
Features
• 16-bit DSP core
zDSP
:
• STFD processing
٭
1, Filter processing, Noise cancellation processing, Various voice processing (voice emphasis, voice speed conversion)
• Power save mode (oscillation stopped, PLL stopped, high-speed operation/low-speed operation
switching)
zHost CPU interface (4-wire system): Slave (multiplexed with GPIO0-3)
zSerial PCM interface (4-wire system): Master/slave: 2 systems (Multiplexed with GPIO4-7 and GPIO8-11)
I2S, long frame synchronization, short frame synchronization: supports Fs=8kHz
zGPIO: 16 ports (GPIO1-12 multiplexed with host CPU interface and serial PCM interface)
zA/D Converter ( ΔΣ method 16bit/8kHz)
zD/A Converter ( ΔΣ method 16bit/8kHz)
zBuilt-in microphone amplifier
zPackage: FLGA 68 pins ( 6.0mm x 6.0mm x 0.8mm)
zPower supply (voltage): Three power supplies ( 1.8V/2.8V: 1.7V to 3.6V (IO), 2.8V: 2.7V to 3.6V (analog),
1.1V 10% (internal logic)
٭
1 : “STFD (Single Transducer Full Duplex) signal processing” refers to a series of signal processes, including analog signal processing and echo canceling to collect the sound inside the ear, for enabling two-way
communication with a single diaphragm.
www.semiconductor-sanyo.com/network
20090318-2/2
相关型号：
©2020 ICPDF网 联系我们和版权申明