AK4953A Datasheet, PDF (74/96 Pages) Asahi Kasei Microsystems – 24bit Stereo CODEC with MIC/HP/SPK-AMP

[AK4953A]
Addr
1CH
Register Name
Digital Filter Select 1
R/W
Default
D7
D6
D5
D4
D3
D2
D1
D0
0
0
LPF
HPF
0
HPFC1 HPFC0 HPFAD
R
R
R/W
R/W
R
R/W
R/W
R/W
0
0
0
0
0
0
0
1
HPFAD: HPF1 Control of ADC
0: OFF
1: ON (default)
When HPFAD bit is “1”, the settings of HPFC1-0 bits are enabled. When HPFAD bit is “0”, HPFAD block is
through (0dB).
When PMADL bit = “1” or PMADR bit = “1”, set HPFAD bit to “1”.
HPFC1-0: Cut-off Frequency Setting of HPF1 (ADC) (Table 26)
Default: “00” (3.4Hz @ fs = 44.1kHz)
HPF: HPF2 Coefficient Setting Enable
0: OFF (default)
1: ON
When HPF bit is “1”, the settings of F1A13-0 and F1B13-0 bits are enabled. When HPF bit is “0”, HPF block
is through (0dB).
LPF: LPF Coefficient Setting Enable
0: OFF (default)
1: ON
When LPF bit is “1”, the settings of F2A13-0 and F2B13-0 bits are enabled. When LPF bit is “0”, LPF block
is through (0dB).
Addr
1DH
Register Name
Digital Filter Mode
R/W
Default
D7
D6
D5
D4
D3
D2
D1
D0
0
0
0
0
0
PFDAC ADCPF PFSDO
R
R
R
R
R
R/W
R/W
R/W
0
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
MS1252-E-00
- 74 -
2010/10