XIB-R Digi International/Maxstream, XIB-R Datasheet - Page 10

• Manufacturer Part Number: XIB-R
• Description: BOARD INTERFACE RS232/485
• Manufacturer: Digi International/Maxstream

Specifications of XIB-R

• Accessory Type: Interface Board
• For Use With/related Products: XStream and Xcite Radios
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: Q2231853

9XCite™ OEM RF Module – Product Manual v2.1 [2007.01.04]
2.2. Modes of Operation
2.2.1. Idle Mode
2.2.2. Transmit Mode
XCite RF Modules operate in five modes.
Figure 2‐04. Modes of Operation
When not receiving or transmitting data, the RF module is in Idle Mode. The module shifts into the
other modes of operation under the following conditions:
When the first byte of serial data comes through the DI Pin and arrives in the DI Buffer, the
modem transitions into Transmit Mode. Once in Transmit Mode, the modem initializes a communi-
cations channel. During channel initialization, incoming serial data accumulates in the DI buffer.
After the channel is initialized, data in the DI buffer is grouped into packets (up to 64 bytes in each
packet) and is transmitted. The modem continues to transmit data packets until the DI buffer is
empty. Once transmission is finished, the modem returns to Idle Mode. This progression is shown
below:
Figure 2‐05. Transmission of data
© 2007 MaxStream, Inc.
• Transmit Mode (Serial data is received in the DI Buffer)
• Receive Mode (Valid RF data is received through the antenna)
• Sleep Mode (Sleep Mode condition is met)
• Command Mode (Command Mode Sequence is issued)
10