N27 Hardware User Guide
Chapter 3 Module Pins
Copyright © Neoway Technology Co., Ltd. All rights reserved.
20
I2C2_SDA
1
11
B
I2C data
P3
Software (open) version: used
as I2C2_SDA. Connect it to
1.8V by using an external 2.2
kΩ pull-up resistor. Leave this
pin floating if it is not used.
PCM Interface
PCM_SYNC
15
B
PCM
synchronous
signal
P3
Software (open) version: Do
not use this pin. Leave this pin
floating.
PCM_DIN
16
DI
PCM data RX P3
Software (open) version: Do
not use this pin. Leave this pin
floating.
PCM_DOUT
17
DO
PCM data TX P3
Software (open) version: Do
not use this pin. Leave this pin
floating.
PCM_CLK
18
DO
PCM
clock
signal
P3
Software (open) version: Do
not use this pin. Leave this pin
floating.
I2S_MCLK
19
DO
I2S
main
clock
P3
Software (open) version: Do
not use this pin. Leave this pin
floating.
SPI Interface
SPI4_CLK
1
64
DO
Clock signal
P3
Software (open) version: used
as SPI4_CLK.
SPI4_MISO
1
65
DI
Slave output,
master input
P3
Software (open) version: used
as SPI4_MISO.
SPI4_MOSI
1
66
DO
Slave input,
master
output
P3
Software (open) version: used
as SPI4_MOSI.
SPI4_CS_N
1
63
DO
Chip select
P3
Software (open) version: used
as SPI4_CS_0.
GPIO
GPIO_31
42
B
P3
GPIO_32
2
41
B
P3
GPIO_33
40
B
P3
GPIO_34
39
B
P3
GPIO_35
38
B
P3
GPIO_36
37
B
With interrupt P3
