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MAS3549F 参数 Datasheet PDF下载

MAS3549F图片预览
型号: MAS3549F
PDF下载: 下载PDF文件 查看货源
内容描述: MAS 35x9F MPEG 2/3层, AAC音频解码器, G.729附录编解码器 [MAS 35x9F MPEG Layer 2/3, AAC Audio Decoder, G.729 Annex A Codec]
分类和应用: 解码器编解码器
文件页数/大小: 92 页 / 1187 K
品牌: MICRONAS [ MICRONAS ]
 浏览型号MAS3549F的Datasheet PDF文件第47页浏览型号MAS3549F的Datasheet PDF文件第48页浏览型号MAS3549F的Datasheet PDF文件第49页浏览型号MAS3549F的Datasheet PDF文件第50页浏览型号MAS3549F的Datasheet PDF文件第52页浏览型号MAS3549F的Datasheet PDF文件第53页浏览型号MAS3549F的Datasheet PDF文件第54页浏览型号MAS3549F的Datasheet PDF文件第55页  
DATA SHEET  
MAS 35x9F  
2
Table 3–16: Codec control registers on I C subaddress 6C , continued  
hex  
Register  
Address  
(hex)  
Function  
Name  
VOLUME  
00 12  
Automatic Volume Correction (AVC) Loudspeaker Channel  
AVC  
bit[15:12] 0  
8
AVC off (and reset internal variables)  
AVC on  
hex  
hex  
bit[11:8]  
8
4
2
1
8 s decay time  
4 s decay time  
2 s decay time  
20 ms decay time (intended for quick adaptation to the  
average volume level after track or source change)  
hex  
hex  
hex  
hex  
Note: To reset the internal variables, the AVC should be switched off and then  
on again during any track or source change. For standard applications, the  
recommended decay time is 4 s.  
00 11  
Balance  
BALANCE  
bit[15:8] Balance range  
7F  
7E  
...  
left 127 dB, right 0 dB  
left 126 dB, right 0 dB  
hex  
hex  
01  
00  
FF  
left 1 dB, right 0 dB  
left 0 dB, right 0 dB  
left 0 dB, right 1 dB  
hex  
hex  
hex  
...  
81  
80  
left 0 dB, right 127 dB  
left 0 dB, right 128 dB  
hex  
hex  
Positive balance settings reduce the left channel without affecting the right  
channel; negative settings reduce the right channel leaving the left channel  
unaffected.  
00 10  
Volume Control  
VOLUME  
bit[15:8] Volume table with 1 dB step size  
7F  
7E  
...  
+12 dB (maximum volume)  
+11 dB  
hex  
hex  
74  
73  
72  
...  
+1 dB  
0 dB  
1 dB  
hex  
hex  
hex  
02  
01  
00  
113 dB  
114 dB  
mute (reset)  
hex  
hex  
hex  
bit[7:0]  
Not used, must be set to 0  
This main volume control is applied to the analog outputs only. It is split  
between a digital and an analog function. In order to avoid noise due to large  
changes of the setting, the actual setting is internally low-pass filtered.  
With large scale input signals, positive volume settings may lead to signal clip-  
ping.  
Micronas  
June 30, 2004; 6251-505-1DS  
51  
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