Ebyte EBT3001 User Manual page 6

Chengdu Ebyte Electronic Technology Co.,Ltd.
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Copyright ©2012–2022，Chengdu Ebyte Electronic Technology Co.,Ltd.
Pin. Function
GND power supply
VDCID power supply
VSW power supply
power supply
LINKLED I/O/A
SPDLED I/O/A
RX_P I/O/A
I/O/A
TX_P I/O/A
I/O/A
TXD0 I/O/A
RTS I/O/A
RXD0 I/O/A
485_EN I/O/A
CTS I/O/A
nRST I/O/A
LED2 I/O/A
LED1 I/O/A
Describe
Common ground terminal, voltage 0V reference point,
power supply negative terminal input ;
The power input of the internal digital circuit LDO
regulator needs an external decoupling capacitor.
2.2uF is recommended , not less than 0.1uF is
recommended ;
The internal DC-DC switch output must be connected
to the VDCID with a 22uH inductor in series close to
the pin ;
For I/O and DC-DC or battery power input, external
decoupling capacitors are required close to the pins.
2.2uF is recommended , not less than 0.1uF is
recommended ;
The network cable is inserted into the indicator
terminal, connected to output low level, and
unconnected to output high level;
SPD indicating terminal;
Ethernet receives RX+ signal end;
Ethernet receives RX -signal end;
Ethernet sends TX+ signal terminal;
Ethernet sends TX -signal terminal;
Serial port sending data terminal, TTL level
communication voltage only supports 3.3V , if it is
connected to 5V , level conversion is required;
MODEM output signal of serial data , request to send;
The serial port receives data, the TTL level
communication voltage only supports 3.3V , if it is
connected to 5V , it needs level conversion;
RS485 software enables the control terminal, when
the serial port sends data, it is a high-level output, and
the default is a low-level output;
MODEM input signal terminal of serial data , clear to
send;
External reset input, active low;
The network port link indicator terminal, the default
output is high level, the output is low level after the
connection is successful under the TCP protocol, and
the default output is low level under the UDP
protocol;
Running indication terminal, after the module is
powered on and initialized, this pin outputs a 5Hz
square wave;
EBT3001 User Manual
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