AK4649 Datasheet, PDF (76/96 Pages) Asahi Kasei Microsystems – 24bit Stereo CODEC with MIC/SPK-AMP

[AK4649]
Addr Register Name
D7
26H Digital Filter Mode
0
R/W
R
Default
0
D6
D5
D4
D3
D2
D1
D0
0
0
0
0
PFDAC ADCPF PFSDO
R
R
R
R
R/W
R/W
R/W
0
0
0
0
0
1
1
PFSDO: SDTO Output Signal Select
0: ADC (+ 1st HPF) Output
1: Programmable Filter / ALC Output (default)
ADCPF: Programmable Filter / ALC Input Signal Select
0: SDTI
1: ADC Output (default)
PFDAC: DAC Input Signal Select
0: SDTI (default)
1: Programmable Filter / ALC Output
Addr
27H
Register Name
Digital MIC
R/W
Default
D7
D6
D5
D4
D3
D2
D1
D0
0
MPDMP PMDMR PMDML DCLKE DMPE
DCLKP
DMIC
R
R/W
R/W
R/W
R/W
R/W
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: Lch data is latched on the DMCLK rising edge (“↑”). (default)
1: Lch data is latched on the DMCLK falling edge (“↓”).
DMPE: Digital Microphone Power Supply
0: Externally (the same supply as AVDD) (default)
1: DMP pin
DCLKE: DMCLK pin Output Clock Control
0: “L” Output (default)
1: 64fs Output
PMDML/R: Input Signal Select with Digital Microphone (Table 20)
Default: “00”
ADC digital block is powered-down by PMDML = PMDMR bits = “0” when selecting a digital microphone input
(DMIC bit = “1”, INL/R bits = “00”, “01” or “10”).
MPDMP: Analog / Digital Microphone Power Supply Pin Select
0: Power Supply for Analog Microphone: MPWR pin (default)
1: Power Supply for Digital Microphone: DMP pin
MS1023-E-01
- 76 -
2010/08