DA7217 datasheet(45/171 Pages) DIALOG

Part #	DA7217

Description	Ultra-Low Power Stereo Codec

PDF	171 Pages

Scroll/Zoom	100%

Manufacturer	DIALOG [Dialog Semiconductor]

Direct Link	http://www.dialog-semiconductor.com/

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45 / 171 page

DA7217

Ultra-Low Power Stereo Codec

Datasheet

Revision 2.5

01 Sep 2016

CFR0011-120-00

45 of 171

Figure 19: Equalizer Filter Band 4 Frequency Response at FS = 48 kHz

Figure 20: Equalizer Filter Band 5 Frequency Response at FS = 48 kHz

9.3.5.4

5-Stage Biquad Filter

The stereo 5-stage biquad filter can be used to provide more flexible filtering of the output signal than

can be achieved using the 5-band equalizer. The biquad filters can be used for the implementation of

low-pass, high-pass or notch filters.

The 5-band EQ and the 5-band biquad filter can be used at the same time for greater filtering control.

The biquad filter is enabled using out_1_biq_5stage_filter_en and can be muted using

out_1_biq_5stage_mute_en.

The biquad filter on each channel can be selected independently using out_1l_biq_5stage_sel and

out_1r_biq_5stage_sel in the OUT_1L_FILTER_CTRL and OUT_1R_FILTER_CTRL registers.

DA7217 Datasheet(PDF) 45 Page - Dialog Semiconductor