Ebyte E32 Series User Manual page 20

SX1278 Wireless Module
4 CHAN
5 OPTION
Copyright ©2012–2017, Chengdu Ebyte Electronic Technology Co., Ltd.
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5，4，3 TTL UART baud rate（bps）
000：1200bps
001：2400bps
010：4800bps
011：9600bps（default）
100：19200bps
101：38400bps
110：57600bps
111：115200bps
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2，1，0 Air data rate（bps）
000：0.3Kbps
001：1.2Kbps
010：2.4Kbps（default）
011：4.8Kbps
100：9.6Kbps
101：19.2Kbps
110：19.2Kbps(same to 101)
111：19.2Kbps(same to 101)
7，6，5： N/A
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4-0： Communication channel （410M + CHAN*1M） ,
default 17H（433MHz）
7， Fixed transmission（similar to MODBUS）
0： Transparent transmission mode
1： Fixed transmission mode
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6 IO drive mode(the default 1)
1：TXD and AUX push-pull outputs,
RXD pull-up inputs
0：TXD、AUX open-collector outputs,
RXD open-collector inputs
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UART baud rate can

communication parties
The UART baud rate has nothing to do with wireless

transmission parameters & won't affect the
wireless transmit / receive features.
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The lower the air data rate, the longer the

transmitting distance,
performance and longer transmitting time
The air data rate must keep the same for both

communication parties.
0(recommended)

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00H-1FH, correspond to 410~441MHz
In fixed transmission mode, the first three bytes of
each user's data frame can be used as high/low
address and channel. The module changes its
address and channel when transmit. And it will
revert to original setting after complete the
process.
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This bit is used to the module internal pull-up

resistor. It also increases the level's adaptability in
case of open drain. But in some cases, it may need
external pull-up resistor.
E32 Series User Manual
be different between
better anti-interference
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