3: Open-Q 660 µSOM Development Kit
Open-Q™ 660 µSOM Dev Kit User Guide
40
35
MB_VREG_5P0
Carrier Board Regulator,
5.0V
36
GPIO_31_AUD_IO_GP
2
APQ GPIO 31
37
DC_IN_12V
Main 12.0V Power
38
GPIO_28_AMP_FAUL
T
APQ GPIO 28
39
GND
Ground
40
GPIO_29_AMP_RST_
N
APQ GPIO 29
Table 15. Audio IO Expansion Header #2 J2001 Pinout
Pin
No
Signal
Description
Pin
No
Signal
Description
1
CDC_IN3_P
Analog Microphone
Input 3, Pos
2
GPIO_62_MI2S_2_M
CLK
APQ GPIO 62, MI2S 2,
Master Clock
3
CDC_IN3_N
Analog Microphone
Input 3, Neg
4
GPIO_24_MI2S_2_S
CK
APQ GPIO 24, MI2S 2, Bit
Clock
5
GND
Ground
6
GPIO_25_MI2S_2_
WS
APQ GPIO 25, MI2S 2,
Word Select
7
CDC_IN4_P
Analog Microphone
Input 4, Pos
8
GPIO_26_MI2S_2_D
0
APQ GPIO 26, MI2S 2,
Data 0
9
CDC_IN4_N
Analog Microphone
Input 4, Neg
10
GPIO_27_MI2S_2_D
1
APQ GPIO 27, MI2S 2,
Data 1
11
CDC_MIC_BIAS1
Microphone Bias 1
12
GND
Ground
13
LPI_GPIO_26_DMIC
1_CLK
Digital Mic 1, PDM
Clock
14
LPI_GPIO_28_DMIC
2_CLK
Digital Mic 2, PDM Clock
15
LPI_GPIO_27_DMIC
1_DATA
Digital Mic 1, PDM
Data
16
LPI_GPIO_29_DMIC
2_DATA
Digital Mic 2, PDM Data
17
MB_VREG_1P8
Carrier Board
Regulator, 1.8V
18
No Net
19
GND
Ground
20
No Net
Please refer to the schematic and consider the power before connecting anything to these headers. For more
details regarding configuration, refer to the Open-Q 660 Software Release Notes to determine feature support
in the latest software release.
