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MSP3440G 参数 Datasheet PDF下载

MSP3440G图片预览
型号: MSP3440G
PDF下载: 下载PDF文件 查看货源
内容描述: 多标准音频处理器系列 [Multistandard Sound Processor Family]
分类和应用:
文件页数/大小: 106 页 / 1906 K
品牌: MICRONAS [ MICRONAS ]
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DATA SHEET  
MSP 34x0G  
Table 3–11: Write Registers on I2C Subaddress 12hex, continued  
Register  
Address  
Function  
Name  
00 69hex  
Micronas BASS Amplitude Limit  
MB_LIM  
bit[15:8] 00hex  
0 dBFS (default limitation)  
FFhex  
...  
1 dBFS  
E0hex  
32 dBFS  
bit[7:0]  
00hex  
must be zero  
The Micronas BASS Amplitude Limit defines the maximum allowed amplitude at  
the output of the MB relative to 0 dbFS. If the amplitude exceeds MB_LIM, the  
gain of the MB is automatically reduced. Note that the Volume Clipping Mode  
must be set to “dynamic” (see page 32).  
00 6Ahex  
Micronas BASS Harmonic Content  
MB_HMC  
bit[15:8] 00hex  
3Fhex  
no harmonics are added (default)  
50% fundamentals + 50% harmonics  
100% harmonics  
7Fhex  
bit[7:0]  
00hex  
must be zero  
MB creates harmonics of the frequencies below the MB highpass frequency  
(MB_HP). The variable MB_HMC describes the ratio of the harmonics towards  
the original signal.  
00 6Bhex  
Micronas BASS Low Pass Corner Frequency  
MB_LP  
bit[15:8] 5dec  
50 Hz  
60 Hz  
6dec  
...  
30dec  
300 Hz  
bit[7:0]  
00dec  
must be zero  
The MB lowpass corner frequency (range 50...300 Hz) defines the upper corner  
frequency of the MB bandpass filter. Recommended values are the same as for  
the MB highpass corner frequency (MB_HP).  
00 6Chex  
Micronas BASS High Pass Corner Frequency  
MB_HP  
bit[15:8] 3dec  
30 Hz  
40 Hz  
4dec  
...  
30dec  
300 Hz  
bit[7:0]  
00hex  
must be zero  
The MB highpass corner frequency defines the lower corner frequency of the  
MB bandpass filter. The highpass filter avoids loading the loudspeakers with low  
frequency components that are below the speakers’ cut off frequency. Recom-  
mended values for subwoofer systems are around 5dec (=50 Hz), for regular TV  
sets around 10dec (=100 Hz).  
Micronas  
May 27, 2003; 6251-476-1DS  
39  
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