Eport-E20 Super Port User Manual
Shanghai High-Flying Electronics Technology Co., Ltd
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1.
When there are data transmiting and receiving, This LED will flashing. If there is no data
transmit and receive, It will output High.
LED1_Link Pin
1.
When Ethernet connected normal, It will output Low, If there is no Ethernet connection, It
will output High.
2.3. Eport-E20-PIN Pins Definition
Figure 4.
Eport-E20-PIN Pins Map
Table3.
Eport-E20-PIN Pins Definition
Pin
Describtion
Net Name Signal Type
Comments
1
Ground
GND
GND
Power Ground
2
+3.3V Power
DVDD
Power
+3.3V
3
External Reset In
nRST
I, PU
“Low” effective reset input.
4
UART0
TXD
O
3.3V, TTL.
5
UART0
RXD
I
3.3V, TTL.
6
UART0
RTS
I
Can be configured as RS485 control
pin
7
Multi-Function Pin
nReload
I,PU
Detailed functions see <Notes>
8
UART0
CTS
O
Can be configured to GPIO
EGND
EGND
EGND
EGND
Earth GND, Used to shield EMC signal.
Connect to Ethernet Metal Shell
Internally.
It is not allowed to connect to GND.
<Notes>
nReload Pin function: Same as above.
