Neoway N720 OpenLinux - Page 20

N720 OpenLinux
Hardware User Guide
Copyright © Neoway Technology Co., Ltd
10
floating if they are
not used.
USB interface
VBUS
40
PI
Charging voltage check
3.3V to 5.2V,
TYP: 5V
In compliance with
USB2.0 protocol
Used for firmware
download and data
transmission.
USB_DM
41
AIO
USB data minus
USB_DP
42
AIO
USB data plus
USB_ID
43
AI
OTG detect
Leave this pin
floating if it is not
used.
ADC interface
ADC2
88
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.
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
USIM2_VCC
21
PO
USIM2 power output
P2
For MDIO data line
to be connected
through a pull-up
resistor
Compatible with
1.8 V/3 V UIM card
SGMII_MDIO_CLK
22
DO
SGMII clock output
P2
Multiplexed as