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MSM7502 PDF预览

MSM7502

更新时间: 2022-12-12 11:17:16
品牌 Logo 应用领域
冲电气 - OKI 解码器编解码器PC
页数 文件大小 规格书
35页 195K
描述
Multi-Function PCM CODEC

MSM7502 数据手册

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¡ Semiconductor  
MSM7502  
PIN AND FUNCTIONAL DESCRIPTIONS  
LA, LB  
General latch outputs for external control.  
Statuses of these outputs are controlled via the processor interface. Refer to the description of the  
control data for details. These outputs provide the capability to drive one TTL.  
DG  
Digital Ground.  
DG is separated from the analog ground AG inside the device. But, DG should be connected as  
close to the AG pin on PCB as possible.  
AG  
Analog Ground.  
SA0, SA1  
Sounder (calling tone) driving outputs.  
The output signal on SA1 is inverted against the signal on SA0. The sounder circuit can be easily  
configuredbyconnectingapiezo-sounderbetweenSA0andSA1.Throughprocessorcontrol,the  
calling tone volume is selectable from four levels and one of six tone combinations is selectable.  
Initially, the ringing tone volume is set at a maximum and the tone combination is set at a 16 Hz  
Wamble tone by a combination of 1 kHz and 1.3 kHz. If these pins are used with no-load, tone  
volume cannot be controlled. When tone volume control is required, a load resistor must be  
connected between SA0 and SA1.  
4/35  

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