Ebyte E21-400G37S, Руководство пользователя

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Chengdu Ebyte Electronic Technology Co., Ltd E21-400G37 User Manual
Copyright ©2012–2019, hengdu Ebyte Electronic Technology Co., Ltd 8
4. 2 Software Edit
1. Mode description
Note: TX will be sent 2mS in advance_ EN is opened, and start time is reserved;
Pin Name Mode Note
TXEN RXEN
External input high and low level, select mode
(support 3.3/5V level)
L L Sleep mode
When the module enters the sleep mode, PA and LNA
do not work
L H
Receiving
mode
When the module enters the receiving mode, PA does
not work and LNA works
H L
Emission
mode
The module enters the transmission mode, PA works,
LNA does not work
H H Not allow
TXEN and RXEN cannot be high level at the same time,
including program initialization, otherwise the
module will be permanently damaged
Chapter 5 Basic Application
5.1 Basic circuit