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WM8998 Datasheet(PDF) 47 Page - Wolfson Microelectronics plc

Part # WM8998
Description  High Performance Audio Hub CODEC
PDF  307 Pages
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Manufacturer  WOLFSON [Wolfson Microelectronics plc]
Direct Link  http://www.wolfsonmicro.com
Logo WOLFSON - Wolfson Microelectronics plc

WM8998 Datasheet(HTML) 47 Page - Wolfson Microelectronics plc

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Production Data
WM8998
w
PD, October 2014, Rev 4.0
47
REGISTER
ADDRESS
BIT
LABEL
DEFAULT
DESCRIPTION
R788
(0314h)
IN1R
Control
15
IN1R_HPF
0
Input Path 1 (Right) HPF Enable
0 = Disabled
1 = Enabled
7:1
IN1R_PGA_VOL
[6:0]
40h
Input Path 1 (Right) PGA Volume
(Applicable to analogue inputs only)
00h to 3Fh = Reserved
40h = 0dB
41h = 1dB
42h = 2dB
… (1dB steps)
5F = 31dB
60h to 7Fh = Reserved
R789
(0315h)
ADC
Digital
Volume
1R
14:13 IN1R_SRC [1:0]
00
Input Path 1 (Right) Source
00 = Differential (IN1ARP - IN1ARN)
01 = Single-ended (IN1ARP)
10 = Differential (IN1BRP-IN1BRN)
11 = Single-ended (IN1BRP)
R790
(0316h)
DMIC1R
Control
5:0
IN1R_DMIC_DLY
[5:0]
00h
Input Path 1 (Right) Digital Delay
(Applicable to digital input only)
LSB = 1 sample, Range is 0 to 63.
(Sample rate is controlled by IN1_OSR.)
R792
(0318h)
IN2L
Control
15
IN2_HPF
0
Input Path 2 HPF Enable
0 = Disabled
1 = Enabled
14:13 IN2_OSR [1:0]
01
Input Path 2 DMIC Oversample Rate
When analogue input is selected
(IN1_MODE=0), this bit controls the
performance mode
00 = Low Power mode
01 = High Performance mode
1X = Reserved
When digital microphone input is selected
(IN2_MODE=1), this field controls the
sample rate as below:
00 = 1.536MHz
01 = 3.072MHz
10 = Reserved
11 = 768kHz
When IN2_OSR=11, the Input Path
sample rate (for all input paths) must be in
the range 8kHz to 16kHz.
12:11 IN2_DMIC_SUP
[1:0]
00
Input Path 2 DMIC Reference Select
(Sets the DMICDAT2 and DMICCLK2
logic levels)
00 = MICVDD
01 = MICBIAS1
10 = MICBIAS2
11 = MICBIAS3
10
IN2_MODE
0
Input Path 2 Mode
0 = Analogue input
1 = Digital input



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