ME70-169 RF Module User Guide
1vv0301021 rev.3 – 2014-11-14
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Page 26 of 40
4.5.
Signals description
Signals
Description
RESET
External hardware reset of the radio module.
Active on low state.
TXD, RXD
Serial link signals, format NRZ/TTL:
TXD is for outgoing data. RXD is for incoming data.
The ‘1’ is represented by a high state.
CTS
Incoming signal. Indicates whether the module can send serial data to
user (Active, on low state) or not (inactive, on high state).
RTS
Outgoing signal. Indicates whether the user can transmit serial data
(active, on low state) or not (inactive, on high state).
IO
I/O, configurable as input or as output.
WAKEUP
Input signal which indicates to the module to wake up from low-power
mode. See reference document [7] for ME70-169
RADIO STATUS
Output signal which indicates the status of the radio. Set to VCC during
radio transmission or as soon as a radio frame is detected with correct
synchronization word. The signals returns to GND at the end of
transmission or as soon as the frame reception is finished.
STANDBY STATUS
The ‘STAND BY STATUS’ output signal is set to logical ‘1’ while the
module is operating and return to ‘0’ during stand by periods.
