Chengdu Ebyte Electronic Technology Co.,Ltd
E90-DTU(400SL44) User Manual
Copyright ©2012–2021
,
Chengdu Ebyte Electronic Technology Co.,Ltd
13
05H
Read/
Write
REG2
Channel control
(
CH
)
0-83 stands for 84 channels respectively
Actual frequency= 410.125 + CH
*1.0M
06H
Read/
Write
REG3
7
enable RSSI byte
1
:
on
0
:
off
(
Default
)
-----------------------------------------------
6
,
fixed transmission
1
:
fixed transmission
0: transparent transmission
(
Default
)
-----------------------------------------------
5
enable repeater
1
:
on
0
:
off
-----------------------------------------------
4
enable LBT
(
monitor before transmit
)
1
:
on
0
:
off
(
Default
)
-----------------------------------------------
3
WOR TX and RX control
1
:
WOR transmitter
TX and RX are enabled, certain
preamble code is added when transmitting date.
Data receiving is on.
0
:
WOR receiver
(
Default
)
Transmission is unavailable. Module
works in WOR monitoring mode, (see details
about WOR time below) to save power.
-----------------------------------------------
2
,
1
,
0
,
WOR period
000
:
500ms
001
:
1000ms
010
:
1500ms
011
:
2000ms
(
Default
)
100
:
2500ms
101
:
3000ms
110
:
3500ms
111
:
4000ms
When enabled, the module receives
wireless data and it will follow an
RSSI strength byte after output via
the serial port TXD
--------------------------------
The module recognizes the first
three bytes of the serial data as:
address high + address low +
channel and takes it as the wireless
transmitting target.
--------------------------------
After the reply function is enabled,
if the target address is not the
module itself, the module will
forward it once.
In order to prevent data return-back,
it is recommended to use it in
conjunction with the fixed point
mode. That is: the target address is
different from the source address.
--------------------------------
When enabled, wireless data will be
monitored before it is transmitted,
which can avoid interference to a
certain extent, but may cause data
delay.
The maximum lingering time of
LBT is 2 seconds, and it will be be
forced to sent out when it reaches 2
seconds.
--------------------------------
Invalid
After the WOR receiver receives the
wireless data and outputs it through
the serial port, it will wait for
1000ms before entering the WOR
again. Users can input the serial port
data and return it via the wireless
during this period. Each serial byte
will be refreshed for 1000ms. Users
must transmit the first byte within
1000ms.
-------------------------------
Invalid
Period T=
(
1+WOR
)
*500ms
,
Max 4000ms
,
Min 500ms
The longer the WOR monitoring
interval period, the lower the
average power consumption, but the
greater the data delay
Both the transmitter and the receiver
must be the same (very important).
07H
Write
CRYPT_H
key high byte
(
Default 0
)
Write only, read and return 0.