Neoway N75 - Network and Connection; Ethernet

N75
Hardware User Guide
Copyright © Neoway Technology Co., Ltd
44
t
LOW
LOW period of the SCL pin
0.5
/
/
us
t
HIGH
HIGH period of the SCL pin
0.26
/
5.0
us
t
SU;STA
Set-up time for a repeated START
condition
0.26
/
/
us
t
SU;DAT
Data set-up time
50
/
/
ns
t
r
Rise time for SCL and SDA
/
/
120
ns
t
f
Fall time for SCL and SDA
6.55
/
120
ns
t
SU;STO
Set-up time for STOP condition
0.26
/
/
us
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
N75 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 N75 Open Linux
complies with ENG46158 Rev1.8. For its timing and electric parameters, see the definition in the
standard.