3 Development Board Circuit
3.9 Microphone Circuit
DBUG378-1.0E
23(25)
3.9
Microphone Circuit
Figure 3-7 Microphone Circuit
U1
R3
MSM261S40
30H0R
1.8V
MIC_SD
MIC_WS
U1
U20
GW2A-LV55PG484
T2
MIC_SCK
MSM261S40
30H0R
1.8V
U21
MIC_SD
MIC_SCK
MIC_WS
L/R
L/R
3.9.1
Pinout
Table 3-9 Microphone Pinout
Name
Pin No.
BANK Description
I/O Level
MIC_WS
U1
6
I²S serial data Select 1.8V
MIC_SCK
T2
6
Serial Data Clock
1.8V
MIC_SD
R3
6
Serial data output
1.8V