| 数字音频控制处理芯片SM9613设计实例 |
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| 引用本文： | 代文化,莫晏光.数字音频控制处理芯片SM9613设计实例[J].电子工程师,2009,35(8):40-43. |
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| 作者姓名： | 代文化 莫晏光 |
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| 作者单位： | 1. 创维集团海外发展有限公司,广东省深圳市,518106
2. 广东工程职业技术学院,广东省广州市,510520 |
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| 摘 要： | SM9613是3对输入4声道输出的数字音频控制处理芯片，芯片内部包含音量、低音、高音、通道均衡、前／后级衰减和响度处理；广泛应用于汽车音响系统和Hi—Fi音响系统。文中介绍了AT89C51单片机与SM9613进行通信的方法。编程时预先把控制数据做成表格，储存于程序区。然后用查表的方法检出衰减数据，用模拟的I^2C接口对SM9613进行控制。由于采用查表法，所以程序比较简洁，可读性好。此程序已应用于多款机器，运行稳定，效果良好。
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| 关 键 词： | 音响系统 汇编语言 SM9613 |
Design Example of Digital Audio-control Processing Chip SM9613 |
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| DAI Wenhua,MO Yanguang.Design Example of Digital Audio-control Processing Chip SM9613[J].Electronic Engineer,2009,35(8):40-43. |
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| Authors: | DAI Wenhua MO Yanguang |
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| Institution: | DAI Wenhua ,MO Yanguang ( 1. Skyworth Overseas Development Co. Ltd, Shenzhen 518106, China; 2. Guangdong College of Engineering Technology, Guangzhou 510520, China) |
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| Abstract: | SM9613 is a digital audio-control processing chip with 3 pairs of input and 4 output channels. Widely used in car and Hi-Fi audio systems, the chip contains such functions as internal volume, bass, treble, channel equalization control, and pre/post attenuation and loudness processing. In this paper,we introduce a method of singlechip AT89C51 communication with SM9613. When programming the control data, it will be made into a table and saved in program zone. The I^2C interface is used to communicate with SM9613 while the meter-reading method is used for reading attenuation data so as to control SM9613. Because of using meter-reading method, the program is simple and has good readability. This program has been applied to many devices, which are running stably and have good effect. |
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| Keywords: | SM9613 |
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