XT09-SI-MESH Digi International, XT09-SI-MESH Datasheet - Page 11

• Manufacturer Part Number: XT09-SI-MESH
• Description: MODULE RF 900MHZ 1W 115K W/RPSMA
• Manufacturer: Digi International

Specifications of XT09-SI-MESH

• Frequency: 900MHz
• Modulation Or Protocol: FHSS, FSK
• Power - Output: 1W
• Sensitivity: -100dBm
• Voltage - Supply: 2.8 V ~ 5.5 V
• Current - Receiving: 80mA
• Antenna Connector: RP-SMA
• Operating Temperature: -40°C ~ 85°C
• Package / Case: Module
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Applications: -
• Memory Size: -
• Data Interface: -
• Data Rate - Maximum: -
• Current - Transmitting: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 602-1183

XTend™ RF Module ‐ Product Manual v2.x6x
Transparent Operation
API Operation
DigiMesh Operation
By default, XTend RF Modules operate in Transparent Mode. The modules act as a serial line
replacement - all UART data received through the DI pin is queued up for RF transmission. When
RF data is received, the data is sent out the DO pin.
When the RO (Packetization Timeout) parameter threshold is satisfied, the module attempts to ini-
tialize an RF transmission. If the module cannot immediately transmit (for instance, if it is already
receiving RF data), the serial data continues to be stored in the DI Buffer. Data is packetized and
sent at any RO timeout or when the maximum packet size is received.
The module operates as described above unless the Command Mode Sequence is detected. The
Command Mode Sequence consists of three copies of the command sequence character [CC
parameter] surrounded by the before and after guard times [BT & AT parameters].
If the DI buffer becomes full, hardware or software flow control must be implemented in order to
prevent overflow (loss of data between the host and module).
API (Application Programming Interface) Operation is an alternative to the default Transparent
Operation. The API is frame-based and extends the level to which a host application can interact
with the networking capabilities of the module. When in API mode, all data entering and leaving
the RF module is contained in frames that define operations or events within the module.
Transmit Data Frames (received through the DI (Data In) pin) include:
Receive Data Frames (sent out the DO (Data Out) pin) include:
The module will send data frames to the application containing status packets; as well as source,
RSSI and payload information from received data packets.
API operation option facilitates many operations such as the examples cited below:
To implement API operations, refer to ‘API Operation’ sections [p40].
XTend RF Modules containing firmware version 8020 (or above) now feature DigiMesh mesh net-
working support. Mesh networking allows messages to be routed through several different XTend
nodes to a final destination node. This firmware load allows system integrators to bolster their
networks with the self-healing attributes of mesh networking. In the event that one RF connection
between nodes is lost (due to power-loss, environmental obstructions, etc.) critical data can still
reach its destination due to mesh networking capabilities embedded inside the module. Transpar-
ent or API operations can be used in conjunction with the mesh networking topology.
-> Change destination addresses without having to enter command mode
-> Receive success/failure status of each RF packet
-> Identify the source address of each received packet
© 2010 Digi Internatonal, Inc.
• 16-bit address
• Showing a received RF packet (16 bits only)
• Response to a TX (Transmit) packet
• Showing events such as hardware reset, watchdog reset, asynchronous events, etc.
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