XB24-BPDK Digi International/Maxstream, XB24-BPDK Datasheet - Page 12
XB24-BPDK
Manufacturer Part Number
XB24-BPDK
Description
KIT DEVELOPMENT XBEE SERIES 2
Manufacturer
Digi International/Maxstream
Series
XBee™r
Type
802.15.4/Zigbeer
Datasheet
1.XB24-BPDK.pdf
(91 pages)
Specifications of XB24-BPDK
Frequency
2.4GHz
For Use With/related Products
XBee™ Series 2 Modules
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
- Current page: 12 of 91
- Download datasheet (2Mb)
2. RF Module Operation
2.1. Serial Communications
2.1.1. UART Data Flow
2.1.2. Serial Buffers
Serial Data
The XBee ZNet 2.5 OEM RF Modules interface to a host device through a logic-level asynchronous
serial port. Through its serial port, the module can communicate with any logic and voltage
compatible UART; or through a level translator to any serial device (For example: Through a Digi
proprietary RS-232 or USB interface board).
Devices that have a UART interface can connect directly to the pins of the RF module as shown in
the figure below.
Figure 2‐01. System Data Flow Diagram in a UART‐interfaced environment
Data enters the module UART through the DIN (pin 3) as an asynchronous serial signal. The signal
should idle high when no data is being transmitted.
Each data byte consists of a start bit (low), 8 data bits (least significant bit first) and a stop bit
(high). The following figure illustrates the serial bit pattern of data passing through the module.
Figure 2‐02. UART data packet 0x1F (decimal number ʺ31ʺ) as transmitted through the RF module
The module UART performs tasks, such as timing and parity checking, that are needed for data
communications. Serial communications depend on the two UARTs to be configured with
compatible settings (baud rate, parity, start bits, stop bits, data bits).
The XBee ZNet 2.5 modules maintain small buffers to collect received serial and RF data, which is
illustrated in the figure below. The serial receive buffer collects incoming serial characters and
holds them until they can be processed. The serial transmit buffer collects data that is received via
the RF link that will be transmitted out the UART.
© 2008 Digi International, Inc.
(Low‐asserted signals distinguished with horizontal line over signal name.)
Example Data Format is 8‐N‐1 (bits ‐ parity ‐ # of stop bits)
DOUT (data out)
DIN (data in)
DOUT (data out)
DIN (data in)
11
Related parts for XB24-BPDK
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
Part Number:
Description:
KIT DEV ZIGBEE
Manufacturer:
Digi International/Maxstream
Datasheet:
Part Number:
Description:
KIT STARTER XBEE
Manufacturer:
Digi International/Maxstream
Datasheet:
Part Number:
Description:
KIT DEV PRO ZIGBEE
Manufacturer:
Digi International/Maxstream
Datasheet:
Part Number:
Description:
MODULE 802.15.4 1MW W/WIRE ANT
Manufacturer:
Digi International/Maxstream
Datasheet:
Part Number:
Description:
MODULE 802.15.4 1MW W/U.FL CONN
Manufacturer:
Digi International/Maxstream
Datasheet:
Part Number:
Description:
MODULE 802.15.4 SER 2 CHIP ANT
Manufacturer:
Digi International/Maxstream
Datasheet:
Part Number:
Description:
MODULE 802.15.4 1MW W/CHIP ANT
Manufacturer:
Digi International/Maxstream
Datasheet:
Part Number:
Description:
MODULE 802.15.4 SER 2 U.FL CONN
Manufacturer:
Digi International/Maxstream
Datasheet:
Part Number:
Description:
MODULE 802.15.4 SER 2 WIRE ANT
Manufacturer:
Digi International/Maxstream
Datasheet:
Part Number:
Description:
MODULE 802.15.4 SER 2 W/RPSMA
Manufacturer:
Digi International/Maxstream
Datasheet:
Part Number:
Description:
MODULE 802.15.4 100MW CHIP ANT
Manufacturer:
Digi International/Maxstream
Datasheet:
Part Number:
Description:
MODULE 802.15.4 RS-232 ANT
Manufacturer:
Digi International/Maxstream
Datasheet:
Part Number:
Description:
CONN CBL RPSMA MALE-N1 MALE 1FT
Manufacturer:
Digi International/Maxstream
Part Number:
Description:
CONN CBL RPSMA MALE-N1 MALE 4FT
Manufacturer:
Digi International/Maxstream
Part Number:
Description:
MODULE 9P 8MB SDRAM 4MB FLASH
Manufacturer:
Digi International/Maxstream
Datasheet: