Neoway N715-EA - Headset, GPIO, and Keypad Pins

N715-EA Hardware User Guide
Chapter 4 Module Pins
Copyright © Neoway Technology Co., Ltd. All rights reserved.
25
AMP_VCOMP
94
-
Headset-dedicated ground
-
Route traces between the left and right
sound channels of the headset,
connect to the GND of the headset
connector, and then the main ground.
HP_L
111
AO
Headset left channel
-
-
HP_P
112
AO
Headset right channel
-
-
HEADMIC_P
140
AI
Module-side differential input +
-
-
HEADMIC_N
141
AI
Module-side differential input -
-
-
HEADMIC_BIAS
143
PO
MIC bias power supply
V
O
=2.2 V - 3 V,
V
norm
=2.6 V
-
HP_DET
142
DI
Headphone plug detect
-
-
HEADMIC_IN_DET
93
DI
headset single-ended input
channel and insertion detection
-
-
GPIO interfaces
GPIO4
69
B
General Purpose Input Output
P3
-
GPIO5
70
B
General Purpose Input Output
P3
-
Matrix keypad interfaces
USB_BOOT
55
DI
Key 0 of inputting
P3
After the module is started, the key is
used for KEYIN0.
KEYIN1
129
DI
Key 1 of inputting
P3
Leave this pin open if unused.
KEYIN2
128
DI
Key 2 of inputting
P3
Leave this pin open if unused.
KEYIN3
127
DI
Key 3 of inputting
P3
Leave this pin open if unused.
KEYIN4
126
DI
Key 4 of inputting
P3
Leave this pin open if unused.
KEYIN5
125
DI
Key 5 of inputting
P3
Leave this pin open if unused.