ADSP-BF522C_15 Datasheet, PDF (18/36 Pages) Analog Devices – Blackfin Embedded Processor with Codec

ADSP-BF522C/ADSP-BF523C/ADSP-BF524C/ADSP-BF525C/ADSP-BF526C/ADSP-BF527C
Table 7. Register 3 Right-Channel DAC Volume
Bit Name
RLHPBOTH
Bits Description
B8 Right-to-left headphone volume load control
RZCEN
B7 Right-channel zero cross detect enable
RHPVOL [6:0] B[6:0] Right-channel headphone volume control
Settings
0 = disable simultaneous loading of right-channel
headphone volume data to left-channel register (default)
1 = enable simultaneous loading of right-channel
headphone volume data to left-channel register
0 = disable (default)
1 = enable
000 0000 to 010 1111 = mute
011 0000 = –73 dB
…
111 1001 = 0 dB (default)
… 1 dB steps up to
111 1111 = +6 dB
Table 8. Register 4 Analog Audio Path
Bit Name
MICBOOST2
SIDEATT[1:0]
SIDETONE
Bits Description
B8 Additional microphone amplifier gain booster control
B[7:6] Microphone sidetone gain control
B5 Sidetone enable. Allow attenuated microphone
signal to be mixed at device output terminal
Settings
0 = 0 dB (default)
1 = 20 dB
00 = –6 dB (default)
01 = –9 dB
10 = –12 dB
11 = –15 dB
0 = sidetone disable (default)
1 = sidetone enable
DACSEL
B4 DAC select—allow DAC output to be
mixed at device output terminal
0 = do not select DAC (default)
1 = select DAC
BYPASS
B3 Bypass select—allow line input signal to be mixed
at device output terminal
0 = bypass disable
1 = bypass enable (default)
INSEL
MUTEMIC
MICBOOST
B2 Line input or microphone input select to ADC
B1 Microphone mute control to ADC
B0 Primary microphone amplifier gain booster control
0 = line input select to ADC (default)
1 = microphone input select to ADC
0 = mute on data path to ADC disable
1 = mute on data path to ADC enable (default)
0 = 0 dB (default)
1 = 20 dB
Rev. A | Page 18 of 36 | March 2010