Neoway N720 OpenLinux - Network and Connection; Ethernet; Figure 3-38 SGMII Connection

N720 OpenLinux
Hardware User Guide
Copyright © Neoway Technology Co., Ltd
45
t
BUF
Bus free time between STOP and START
condition
0.5
/
/
us
t
VD;DAT
Data invalid time
/
/
0.45
us
t
VD;ACK
Data invalid acknowledge time
/
/
0.45
us
3.4 Network and Connection
N720 OpenLinux supports Ethernet, Bluetooth, WLAN, and other network connections.
3.4.1 Ethernet
SGMII
Signal
Pin
I/O
Function
Remarks
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
Leave this pin floating if it is not used.
SGMII_RX_N
18
AI
SGMII receive minus
Leave this pin floating if it is not used.
SGMII_RX_P
19
AI
SGMII receive plus
Leave this pin floating if it is not used.
SGMII interface is used for Ethernet connection. The SGMII interface provided by N720 Open Linux
complies with ENG46158 Rev1.8. For its timing and electric parameters, see the definition in the
standard.
Figure 3-38 SGMII connection
SGMII_TX_P
SGMII_TX_N
SGMII_RX_P
SGMII_RX_N
N720 module
C1
0.1μF
C2
0.1μF
C3 0.1μF
C4 0.1μF
SGMII_RX_P
SGMII_RX_N
SGMII_TX_P
SGMII_TX_N
PHY chipset