User's Manual
Table Of Contents
- 1. XTend RF Module
- 2. RF Module Operation
- 3. RF Module Configuration
- Programming Examples
- Command Reference Table
- Command Descriptions
- %V (Board Voltage) Command
- AM (Auto-set MY) Command
- AP (API Enable) Command
- AT (Guard Time After) Command
- BD (Interface Data Rate) Command
- BR (RF Data Rate) Command
- BT (Guard Time Before) Command
- CC (Command Sequence Character) Command
- CD (GPO2 Configuration) Command
- CF (Number Base) Command
- CN (Exit AT Command Mode) Command
- CS (GPO1 Configuration) Command
- CT (Command Mode Timeout) Command
- DB (Received Signal Strength) Command
- DT (Destination Address) Command
- E0 (Echo Off) Command
- E1 (Echo On) Command
- ER (Receive Error Count) Command
- FH (Force Wake-up Initializer) Command
- FL (Software Flow Control) Command
- FS (Forced Synch Time) Command
- FT (Flow Control Threshold) Command
- GD (Receive Good Count) Command
- HP (Hopping Channel) Command
- HT (Time before Wake-up Initializer) Command
- HV (Hardware Version) Command
- ID (Modem VID) Command
- KY (AES Encryption Key) Command
- LH (Wake-up Initializer Timer) Command
- MD (RF Mode) Command
- MK (Address Mask) Command
- MT (Multi-transmit) Command
- MY (Source Address) Command
- NB (Parity) Command
- PB (Polling Begin Address) Command
- PD (Minimum Polling Delay) Command
- PE (Polling End Address) Command
- PK (Maximum RF Packet Size) Command
- PL (TX Power Level) Command
- PW (Pin Wake-up) Command
- RB (Packetization Threshold) Command
- RC (Ambient Power - Single Channel) Command
- RE (Restore Defaults) Command
- RM (Ambient Power - All Channels) Command
- RN (Delay Slots) Command
- RO (Packetization Timeout) Command
- RP (RSSI PWM Timer) Command
- RR (Retries) Command
- RT (GPI1 Configuration) Command
- SB (Stop Bits) Command
- SH (Serial Number High) Command
- SL (Serial Number Low) Command
- SM (Sleep Mode) Command
- ST (Time before Sleep) Command
- TP (Board Temperature) Command
- TR (Transmit Error Count) Command
- TT (Streaming Limit) Command
- TX (Transmit Only) Command
- VL (Firmware Version - Verbose)
- VR (Firmware Version - Short) Command
- WA (Active Warning Numbers) Command
- WN (Warning Data) Command
- WR (Write) Command
- WS (Sticky Warning Numbers) Command
- API Operation
- 4. RF Communication Modes
- Appendix A: Agency Certifications
- Appendix B: Development Guide
- Appendix C: Additional Information
XTend™RFModule‐ProductManual
©2013DigiInternatonal,Inc. 15
Figure2‐07. ReceiveModeDataFlow
*Refertothe‘A d d r e s sRecognition’sec‐
tionformoreinformationregarding
addressrecognition.
The module returns to Idle Mode
when valid RF data is no longer
detected or after an error is
detected in the received RF data. If
serial data is stored in the DI
buffer while the module is in
Receive Mode, the serial data will
be transmitted after the module is
finished receiving data and returns
to Idle Mode.
Shutdown Mode
Hardware Sleep
For applications where power consumption must be kept to a minimum during idle periods,
Shutdown Mode offers the lowest power mode available to the module.
When the SHDN
pin (pin 7) is driven low, the module is forced into shutdown mode. Any
communication in progress (transmit or receive) will be halted and any buffered data will be lost.
For any other mode of operation, SHDN
must be driven or pulled high. While in shutdown mode,
the module's VCC pin draws 5 µA (typical).
Immediately after the SHDN
pin changes state from low to high, the module resets. After reset,
there is a delay that must be observed. Delay time is <100ms.
While SHDN
pin is driven low, the following pins are set to high impedance by the module: DCD,
TX_PWR, RX LED, DO and CTS
(See pin signal descriptions, p6). The SHDN line (also used for
RSSI indication) is driven low during shutdown.
The following input pins may continue to be driven by external circuitry when in shutdown mode:
PIN_PWR_DWN, RTS
, DI and SHDN.
Note: Because the DO pin also goes high impedance, if the XTend RF Module is connected to a pro-
cessor, the UART receive pin could be floating. A weak pull-up should be placed between the module
and the microcontroller so that data is not interpreted as being transmitted to the microprocessor.
Sleep Mode
Software Sleep
Sleep Modes enable the module to enter states of low-power consumption when not in use. Three
software Sleep Modes are supported:
• Pin Sleep (Host Controlled)
• Serial Port Sleep (Wake on Serial Port activity)
• Cyclic Sleep (Wake on RF activity)