N58 Hardware User Guide
Chapter 4 Module Pins
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25
SPI interface
SPI_CLK
84
DO
Clock signal
P3
Leave this pin floating
if it is not used.
SPI_MISO
85
B
Output from
the
slave
device, and
input
from
the
master
device
P3
Leave this pin floating
if it is not used.
SPI_MOSI
86
B
Input
from
the
slave
device, and
output from
the
master
device
P3
Leave this pin floating
if it is not used.
SPI_CS_N
87
DO
Chip select
signal of the
slave device
P3
Leave this pin floating
if it is not used.
GPIO interface
GPIO_0
50
B
GPIO
P3
Leave this pin floating
if it is not used.
GPIO_2
80
B
GPIO
P3
Leave this pin floating
if it is not used.
GPIO_3
78
B
GPIO
P3
Leave this pin floating
if it is not used.
Audio SPK interface
SPK_P
15
AO
Speaker
output
positive
-
-
SPK_N
16
AO
Speaker
output
negative
-
-
Audio MIC interface
MIC_P
18
AI
Microphone
input
positive
-
-
MIC_N
19
AI
Microphone
input
negative
-
-
