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DA7211 Datasheet(PDF) 44 Page - Dialog Semiconductor

Part # DA7211
Description  Ultra-low power stereo codec
PDF  105 Pages
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Manufacturer  DIALOG [Dialog Semiconductor]
Direct Link  http://www.dialog-semiconductor.com/
Logo DIALOG - Dialog Semiconductor

DA7211 Datasheet(HTML) 44 Page - Dialog Semiconductor

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DA7211
Ultra-low power stereo codec
Company confidential
Datasheet
Revision 3e
15-Oct-2015
CFR0011-120-00 Rev 5
44 of 105
© 2015 Dialog Semiconductor
The 5-band equaliser cannot be used at a 96 kHz sampling rate and is automatically disabled if the
ADC is configured to Voice Mode using control DAC_VOICE_EN (address 0x14, Table 56). Details
of corner frequencies are shown in Table 25. Frequency responses are illustrated in Figure 17 to
Figure 21.
8.5.2
Digital audio processing for playback path
In addition to the user selectable sound settings offered by the 5-band equaliser, the playback path
offers up to 8th order configurable audio filtering, for example, to correct the frequency response of
connected receivers, speakers or headphones.
DAC L
ADC L
ADC R
DAC R
GP
2D
GP
2C
GP
2A
GP
1D
GP
1C
GP
1A
ADC
IIR L
ADC
HP L
DAC
HP L
DAC
IIR L
ADC
HP R
ADC
IIR R
DAC
IIR R
DAC
HP R
I2S/PCM L
I2S/PCM R
+
+
+
+
+
+
GP
1B
GP
2B
+
+
+
Figure 24: Stereo playback (for example, freefield headphone equalisation)
For applications with stereo speakers the digital signal processing offers stereo widening with 3D
audio effects.
DAC L
ADC L
ADC R
DAC R
GP
2D
GP
2C
GP
2A
GP
1D
GP
1C
GP
1A
ADC
IIR L
ADC
HP L
DAC
HP L
DAC
IIR L
ADC
HP R
ADC
IIR R
DAC
IIR R
DAC
HP R
I2S/PCM L
I2S/PCM R
+
+
+
+
+
+
GP
1B
GP
2B
+
+
+
Figure 25: Sound spatialiser for stereo speaker



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