User's Manual

Flairmesh Technologies Confidential -9-
21
PIO5/UART_TX
Digital bidirectional with programable
strength internal pull-up/pull-down
Programmable IO 3, strong pull up
when reset,
Additional function:
■ UART TX
22
SPK_N
Analog
Headphone/speaker differential
output, negative
23
SPK_P
Analog
Headphone/speaker differential
output, positive
24
MIC_BIAS
Mic bias output
Mic bias output
25
MIC1_N
Analog
Microphone differential 1 input,
negative
26
MIC1_P
Analog
Microphone differential 1 input,
positive
27
MIC2_N
Analog
Microphone differential 2 input,
negative
28
MIC2_P
Analog
Microphone differential 2 input,
positive
29
GND/MIC_GND
Microphone ground
Ground of microphone
30
GND
Ground
Ground
31
GND
Ground
Ground
Table 2: Pinout Definitions
2 Electrical Characteristics
2.1 Absolute Maximum Rating
Table 3: Absolute Maximum Rating
Rating
Min
Max
Unit
Storage Temperature
-40
+85
°C
VCHG Voltage
-0.4
7.0
V
USB_DP/USB_DN Voltage
-0.4
3.8
V
VBAT Voltage
-0.4
4.8
V
PIO Voltage
-0.4
3.8
V
LED Voltage
-0.4
7.0
V
AIO Voltage
-0.4
2.1
V