AK4637 Datasheet, PDF (74/96 Pages) Asahi Kasei Microsystems – 24bit Mono CODEC with MIC - SPK-AMP

[AK4637]
Addr
08H
Register Name
Digital MIC
R/W
Default
D7
D6
D5
D4
D3
D2
D1
D0
0
0
0
PMDM DCLKE
0
DCLKP DMIC
R
R
R
R/W
R/W
R
R/W
R/W
0
0
0
0
0
0
0
0
DMIC: Digital Microphone Connection Select
0: Analog Microphone (default)
1: Digital Microphone
DCLKP: Data Latching Edge Select
0: Data is latched on the DMCLK rising edge (“”). (default)
1: Data is latched on the DMCLK falling edge (“”).
DCLKE: DMCLK pin Output Clock Control
0: “L” Output (default)
1: 64fs Output
PMDM: Input Signal Select with Digital Microphone
0: OFF (default)
1: ON
ADC digital block is powered-down by PMDM bit = “0” when selecting a digital microphone input
(DMIC bit = “1”).
Addr
09H
Register Name
Timer Select
R/W
Default
D7
D6
D5
D4
D3
D2
ADRST1 ADRST0 FRATT FRN
0
0
R/W
R/W
R/W
R/W
R
R
0
0
0
0
0
0
DVTM: Output Digital Volume Soft Transition Time Setting (Table 44)
0: 816/fs (default)
1: 204/fs
This is the transition time between DVOL7-0 bits = 00H and CCH.
FRN: ALC Fast Recovery Function Enable
0: Enable (default)
1: Disable
RFATT: Fast Recovery Reference Volume Attenuation Amount (Table 35)
0: -0.00106dB (4/fs) (default)
1: -0.00106dB (16/fs)
ADRST1-0: ADC Initialization Cycle Setting (Table 18)
Default: “00” (1059/fs)
D1
D0
0
DVTM
R
R/W
0
0
015010680-E-00
- 74 -
2015/09