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CS4349-CZZ 参数 Datasheet PDF下载

CS4349-CZZ图片预览
型号: CS4349-CZZ
PDF下载: 下载PDF文件 查看货源
内容描述: 192 kHz的DAC W /音量控制和1 Vrms的@ 3.3 V [192 kHz DAC w/ Volume Control and 1 Vrms @ 3.3 V]
分类和应用:
文件页数/大小: 40 页 / 819 K
品牌: CIRRUS [ CIRRUS LOGIC ]
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CS4349  
Soft Ramp and Zero Cross  
Soft Ramp and Zero Cross Enable dictate that signal level changes, either by attenuation changes or mut-  
ing, will occur in 1/8 dB steps and be implemented on a signal zero crossing. The 1/8 dB level change will  
occur after a time-out period between 512 and 1024 sample periods (10.7 ms to 21.3 ms at 48 kHz sample  
rate) if the signal does not encounter a zero crossing. The zero cross function is independently monitored  
and implemented for each channel.  
8.6.2  
8.6.3  
8.6.4  
Soft Volume Ramp-Up After Error (RMP_UP) Bit 5  
Function:  
When set to 1 (default), an un-mute will be performed after executing a filter mode change, after LRCK is  
lost, and after changing the Functional Mode. This un-mute is affected, similar to attenuation changes, by  
the Soft and Zero Cross bits in the Volume and Mixing Control register.  
When set to 0, an immediate un-mute is performed in these instances.  
Note: For best results, it is recommended that this feature be used in conjunction with the RMP_DN bit.  
Soft Ramp-Down Before Filter Mode Change (RMP_DN) Bit 4  
Function:  
When set to 1 (default), a mute will be performed prior to executing a filter mode change. This mute is  
affected, similar to attenuation changes, by the Soft and Zero Cross bits in the Volume and Mixing Control  
register.  
When set to 0, an immediate mute is performed prior to executing a filter mode change.  
Note: For best results, it is recommended that this feature be used in conjunction with the RMP_UP bit.  
Interpolation Filter Select (FILT_SEL) Bit 2  
Function:  
When set to 0 (default), the Interpolation Filter has a fast roll-off.  
When set to 1, the Interpolation Filter has a slow roll-off.  
The specifications for each filter can be found in the ”Combined Interpolation & On-Chip Analog Filter Re-  
sponse” on page 12, and response plots can be found in Figures 24 through 29.  
34  
DS782F1