DA7219 Datasheet, PDF (68/123 Pages) Dialog Semiconductor – Audio codec with Advanced Accessory Detect

DA7219
Audio codec with Advanced Accessory Detect
Table 57: Register map adc_filters_cad_00 page 0
Address
#
7
6
5
4
Name
Register Page 0
0x00000038
ADC_FILTER
S1
adc_hpf_en Reserved
adc_audio_hpf_corner
3
adc_voice_e
n
Company confidential
2
1
0
adc_voice_hpf_corner
Table 58: ADC_FILTERS1 (Page 0: 0x00000038)
Bit
Mode
Symbol
Description
7
R/W
adc_hpf_en
ADC high pass filter control
Reset
0x1
0 = ADC high pass filter disabled
1 = ADC high pass filter enabled
5:4
R/W
adc_audio_hpf_corn ADC high pass filter 3 dB cut-off point.
0x0
er
At 48 kHz, the cutoff point is at:
00 = 2 Hz
01 = 4 Hz
10 = 8 Hz
11 = 16 Hz
For other sample rates the 3 dB cuttoff point scales
proportionately
3
R/W
adc_voice_en
ADC voice filter control
0x0
0 = Voice filter disabled
1 = Voice filter enabled
2:0
R/W
adc_voice_hpf_corn Voice (8 kHz) High pass 3 dB cutoff point
0x0
er
000 = 2.5 Hz
001 = 25 Hz
010 = 50 Hz
011 = 100 Hz
100 = 150 Hz
101 = 200 Hz
110 = 300 Hz
111 = 400 Hz
For other sample rates the 3 dB cuttoff point scales
proportionately
Datasheet
Revision 2.1
68 of 123
17-Dec -2015
© 2015 Dialog Semiconductor