AK4695 Datasheet, PDF (26/107 Pages) Asahi Kasei Microsystems – 24bit 4ch CODEC with MIC/HP/SPK/LINE-AMP

[AK4695]
■ MIC/LINE Input Selector
The AK4695 has an input selector. IN01-0, IN11-0, IN21-0 and IN31-0 bits select input signal of MIC0, MIC1, MIC2 and
MIC3, respectively. The input impedance is typ. 100k. When the AK4695 is in power save mode (PMVCM bit = “1”,
PMADC0/1/2/3 bits = “0”), the input impedance is Hi-Z. A microphone input pin (MICIN0L, MICIN3L, MICIN0R or
MICIN3R) cannot be allocated for two MIC’s. When DMIC bit = “0”, do not select the same signal input pin for MIC0 and
MIC2, or MIC1 and MIC3.
When DMIC bit = “1”, digital microphone input is selected regardless of IN bits.
DMIC bit IN01 bit
IN00 bit
MIC0 Input Signal
0
0
MICIN0L (Note 45)
(default)
0
0
1
1
MICIN3L (Note 45)
0
AUXINL
1
1
N/A
1
x
x
Digital MIC
Note 45. Do not select the same input signal as MIC2.
Table 10. Input Signal Select of MIC0 (x: Don’t care, N/A: Not available)
DMIC bit IN11 bit
IN10 bit
MIC1 Input Signal
0
0
MICIN0R (Note 46)
(default)
0
0
1
1
MICIN3R (Note 46)
0
AUXINR
1
1
N/A
1
x
x
Digital MIC
Note 46. Do not select the same input signal as MIC3.
Table 11. Input Signal Select of MIC1 (x: Don’t care, N/A: Not available)
DMIC bit IN21 bit
IN20 bit
MIC2 Input Signal
0
0
MICIN1L
0
0
1
1
MICIN2L
0
MICIN0L (Note 47)
1
1
MICIN3L (Note 47)
1
x
x
Digital MIC
Note 47. Do not select the same input signal as MIC0.
Table 12. Input Signal Select of MIC2 (x: Don’t care)
(default)
DMIC bit IN31 bit
IN30 bit
MIC3 Input Signal
0
0
MICIN1R
0
0
1
1
MICIN2R
0
MICIN0R (Note 48)
1
1
MICIN3R (Note 48)
1
x
x
Digital MIC
Note 48. Do not select the same input signal as MIC1.
Table 13. Input Signal Select of MIC3 (x: Don’t care)
(default)
MS1463-E-01
- 26 -
2014/12