PA5750
ANALOG PRODUCTS DIVISION
Low Power Stereo Audio CODEC
With Speaker and Headphone Amplifier.
6.2.5. Register13 – ADC Control 5, Default 0000 0110
Bit Name
Bit Description
ADC_FsMode
5
0 – single speed mode (default)
1 – double speed mode.
Master mode ADC MCLK to sampling frequency ratio:
ADC_FsRatio
00000 -128
00001 – 192
00010 – 256
00011 – 384
00100 – 512
00101 – 576
4:0 00110 – 768 (default)
00111 – 1024
01000 – 1152
01001 – 1408
01010 – 1536
01011 – 2112
01100 – 2304
Other – Reserved.
10000 - 125
10001 - 136
10010 - 250
10011 - 272
10100 - 375
10101 - 500
10110 - 544
10111 - 750
11000 - 1000
11001 - 1088
11010 - 1496
11011 - 1500
6.2.6. Register14 – ADC Control 6, Default 0011 0000
Bit Name
Bit Description
ADC_invL
7
0 – normal (default).
1 – left channel polarity inverted.
ADC_invR
6
0 – normal (default).
1 – right channel polarity inverted.
ADC_HP_L
5
0 – disable ADC left channel high pass filter.
1 – enable ADC left channel high pass filter (default).
ADC_HP_R
4
0 – disable ADC right channel high pass filter.
1 – enable ADC right channel high pass filter (default).
6.2.7. Register15 – ADC Control 7, Default 0011 0000
Bit Name
Bit Description
00 – 0.5dB per 4 LRCK digital volume control ramp rate (default).
ADCRampRate
7:6
01 – 0.5dB per 8 LRCK digital volume control ramp rate.
10 – 0.5dB per 16 LRCK digital volume control ramp rate.
11 – 0.5dB per 32 LRCK digital volume control ramp rate.
ADCSoftRamp
5
0 – disable digital volume control soft ramp.
1 – enable digital volume control soft ramp (default)
ADCZeroCrs
4
0 – disable digital volume control at zero crossing.
1 – enable digital volume control at zero crossing (default).
ADCLeR
3
0 – normal (default)
1 – both channel gain control is set by ADC left gain control register
ADCMute
2
0 – normal (default).
1 – mute ADC digital output.
6.2.8. Register16 – ADC Control 8, Default 1100 0000
Bit Name
Bit Description
Digital volume control attenuates the signal in 0.5dB increments from 0 to -96dB
00000000 – 0dB.
00000001 – -0.5dB
LADCVOL
7:0 00000010 - -1dB
……………….
11000000 - -96dB (default).
561 E Elliot Road.#175 Chandler, AZ 85225 Tel: (480)539-2900. Fax: (480)632-1715.
14
95230 Rev.0. 04/09
www.protekanalog.com
Not for use in any life support systems.