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WM8352 参数 Datasheet PDF下载

WM8352图片预览
型号: WM8352
PDF下载: 下载PDF文件 查看货源
内容描述: 欧胜音频Plusa ? ¢立体声CODEC与电源管理 [Wolfson AudioPlus™ Stereo CODEC with Power Management]
分类和应用:
文件页数/大小: 336 页 / 2353 K
品牌: WOLFSON [ WOLFSON MICROELECTRONICS PLC ]
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Production Data  
WM8352  
13.9 ANALOGUE OUTPUTS  
13.9.1 OUT1L AND OUT1R  
The headphone outputs, OUT1L and OUT1R can drive a 16Ω or 32Ω headphone load, either through  
DC blocking capacitors, or DC coupled without any capacitor. Each output has an analogue volume  
control PGA with a gain range of -57dB to +6dB as shown in Figure 44.  
Common mode noise rejection is also possible on the OUT1L and OUT1R outputs, using HPCOM as  
the return path. The HPCOM feature must be enabled via the OUT1_FB register field and the  
HPCOM connection must be AC coupled to the headphone output. A 4.7uF coupling capacitor is  
required between the noisy ground connection the HPCOM pin.  
The control register fields for the OUT1L and OUT1R outputs are described in Table 40. The  
available output configurations are shown in Section 13.9.3.  
OUT1L_MUTE  
R104 [14]  
From left  
output mixer  
OUT1L  
-1  
OUT1L_VOL  
R104 [7:2]  
OUT1R_MUTE  
R105 [14]  
From right  
output mixer  
OUT1R  
-1  
OUT1R_VOL  
R105 [7:2]  
HPCOM  
Vmid  
OUT1_FB  
R76 [0]  
Figure 44 Headphone Outputs OUT1L and OUT1R  
PD, February 2011, Rev 4.4  
83  
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