Neoway N75 - Page 19

N75
Hardware User Guide
Copyright © Neoway Technology Co., Ltd
9
floating if it is not
used.
ADC1
89
AI
Analog-to-digital signal
conversion
V
max
=1.7V;
V
min
=0.1V
15-bit, detectable
voltage ranging
from 0.1V to 1.7V
Leave this pin
floating if it is not
used.
SGMII interface
SGMII_TX_N
15
AO
SGMII transmit minus
Leave this pin
floating if it is not
used.
SGMII_TX_P
16
AO
SGMII transmit plus
SGMII_RX_N
18
AI
SGMII receive minus
SGMII_RX_P
19
AI
SGMII receive plus
MDIO Control Interfaces
SGMII_VCC
21
PO
USIM2 power output
P2
For MDIO data line
to be connected
through a pull-up
resistor
SGMII_MDIO_CLK
22
DO
SGMII clock output
P2
Multiplexed as
USIM2
Leave them
floating if they are
not used.
SGMII_MDIO_DATA
23
B
SGMII data IO
P2
ETH_REST_N
24
DO
Ethernet PHY reset
P2
ETH_INT_N
25
DI
Ethernet PHY interrupt
P2
I2C interface
I2C_4_SDA
81
OD
I2C data signal
P3
It is connected
through a 2.2 kΩ
internal pull-up
resistor.
Leave this pin
floating if it is not
used.
I2C_4_SCL
82
OD
I2C clock
P3
I2S/PCM interface
I2S_1_SCLK
9
DO
I2S serial clock
P3
Multiplexed as
PCM
Leave this pin
floating if it is not
used.
I2S_1_DOUT
10
DO
I2S data transmit
P3
I2S_1_DIN
11
DI
I2S data receive
P3
I2S_1_WS
12
B
I2S word select
P3