Audio Codec (AC)
User Manual All information provided in this document is subject to legal disclaimers. © REALTEK 2019. All rights reserved.
345
1’b0: Disable
1’b1: Enable
[11:10]
ADC_R_AD_LPF1ST_FC_SEL
R/W
2'b00
ADC SRC 1st LPF fc
2’b00: 31.04khz
2’b01: 46.92khz
2’b10: 63.06khz
2’b11: 79.45khz
[12]
ADC_R_AD_MIX_MUTE
R/W
1'b1
analog ADC input path mute control Left Channel
1’b0: Un-Mute
1’b1: Mute
[13]
ADC_R_DMIC_MIX_MUTE
R/W
1'b1
DMIC input path mute control Left Channel
1’b0: Un-Mute
1’b1: Mute
[14]
ADC_R_AD_DCHPF_EN
R/W
1'b1
High pass filter enable control (filter DC)
1’b0: Disable
1’b1: Enable
[15]
RSVD
N/A
1'b0
Reserved
17.6.2.8
0x15
Address
Bit
Name
Access
Reset
Description
0x15
[1:0]
ADC_R_AD_COMP_GAIN
R/W
2'b00
ADC compensate gain
2’b00: 0dB
2’b01: 1dB
2’b10: 2dB
2’b11: 3dB
[2]
ADC_R_ADJ_HPF_2ND_EN
R/W
1'b1
Adaptive 2nd High pass filter enable control
1’b0: Disable
1’b1: Enable
[5:3]
ADC_R_ADJ_HPF_COEF_SEL
R/W
3'b000
Coefficient coarse select, fc range (num==0 ~ num==63)
3'b000: fs = 8k, or 16k corresponding fc =
(20~2000Hz)/(40~4000Hz)
3'b001: fs = 32k corresponding fc = (40~3278Hz)
3'b010: fs = 48k or 44.1k corresponding fc =
(30~2168Hz)/(28~1992Hz)
3'b011: fs = 96k or 88.2k corresponding fc =
(30~2034Hz)/(28~1869Hz)
[7:6]
ADC_R_DMIC_BOOST_GAIN
R/W
2'b00
DMIC boost gain control
2’b00: 0dB
2’b01: 12dB
2’b10: 24dB
2’b11: 36dB
[8]
ADC_R_AD_MUTE
R/W
1'b0
Digital Mute from ADC Left Channel Digital Mixer
1’b0: Un-Mute
1’b1: Mute
[10:9]
ADC_R_AD_ZDET_FUNC
R/W
2'b10
ADC zero detection function select
2'b00: Immediate change
2'b01: Zero detection & immediate change
2'b10: Zero detection & increase/decrease change
2'b11: Unchange
[12:11]
ADC_R_AD_ZDET_TOUT
R/W
2'b01
ADC zero detection time out select
2'b00: 1024*16 samples
2'b01: 1024*32 samples
2'b10: 1024*64 samples
2'b11: 64 samples
[15:13]
RSVD
N/A
3'b000
Reserved
Realtek confidential files
The document authorized to
SZ99iot
2019-05-15 10:08:03