XB24-BWIT-004 Digi International/Maxstream, XB24-BWIT-004 Datasheet - Page 15

• Manufacturer Part Number: XB24-BWIT-004
• Description: MODULE 802.15.4 SER 2 WIRE ANT
• Manufacturer: Digi International/Maxstream
• Series: XBee™r

Specifications of XB24-BWIT-004

• Frequency: 2.4GHz
• Data Rate - Maximum: 250kbps
• Modulation Or Protocol: 802.15.4
• Applications: Home/Building Automation, Industrial Control, ZigBee™
• Power - Output: 2 mW (3 dBm)
• Sensitivity: -96dBm
• Voltage - Supply: 2.1 V ~ 3.6 V
• Current - Receiving: 38mA
• Current - Transmitting: 35mA
• Data Interface: PCB, Through Hole
• Antenna Connector: On-Board, Wire Antenna
• Operating Temperature: -40°C ~ 85°C
• Package / Case: Module
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Memory Size: -

XBee ZNet 2.5/XBee‐PRO ZNet 2.5 ZigBee OEM RF Modules v1.x4x
2.2. Modes of Operation
Idle Mode
2.2.1. Idle Mode
2.2.2. Transmit Mode
New
Transmission
When not receiving or transmitting data, the RF module is in Idle Mode. During Idle Mode, the RF
module is also checking for valid RF data. The module shifts into the other modes of operation
under the following conditions:
When serial data is received and is ready for packetization, the RF module will exit Idle Mode and
attempt to transmit the data. The destination address determines which node(s) will receive the
data.
Prior to transmitting the data, the module ensures that a 16-bit network address and route to the
destination node have been established.
If the destination 16-bit network address is not known, network address discovery will take place.
If a route is not known, route discovery will take place for the purpose of establishing a route to
the destination node. If a module with a matching network address is not discovered, the packet is
discarded. The data will be transmitted once a route is established. If route discovery fails to
establish a route, the packet will be discarded.
Figure 2‐04. Transmit Mode Sequence
© 2008 Digi International, Inc.
• Transmit Mode (Serial data in the serial receive buffer is ready to be packetized)
• Receive Mode (Valid RF data is received through the antenna)
• Sleep Mode (End Devices only)
• Command Mode (Command Mode Sequence is issued)
Address Discovered?
Address Discovery
Address Known?
Data Discarded
16-bit Network
16-bit Network
16-bit Network
No
No
Yes
Yes
Route Discovered?
Route Discovery
Route Known?
No
No
Transmission
Successful
Yes
Yes
Transmit Data
14