XBIB-U Digi International/Maxstream, XBIB-U Datasheet - Page 13

• Manufacturer Part Number: XBIB-U
• Description: BOARD USB ZIGBEE MOD PRO
• Manufacturer: Digi International/Maxstream

Specifications of XBIB-U

• Design Resources: XBIB-U Shematic
• Accessory Type: Interface Board
• For Use With/related Products: XBee and XBee Pro Radios
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

XBee/XBee‐PRO™ OEM RF Modules ‐ 802.15.4 ‐ v1.xAx [2007.05.031]
2.2.2. API Support
2.2.3. Sleep Support
2.2.4. DIO Pin Change Detect
2.2.5. Sample Rate (Interval)
I/O data is sent out the UART using an API frame. All other data can be sent and received using
Transparent Operation [refer to p10] or API framing if API mode is enabled (AP > 0).
API Operations support two RX (Receive) frame identifiers for I/O data:
The API command header is the same as shown in the “RX (Receive) Packet: 64-bit Address” and
“RX (Receive) Packet: 64-bit Address” API types [refer to p58]. RX data follows the format
described in the I/O Data Format section [p12].
Applicable Commands: AP (API Enable)
When an RF module wakes, it will always do a sample based on any active ADC or DIO lines. This
allows sampling based on the sleep cycle whether it be Cyclic Sleep (SM parameter = 4 or 5) or Pin
Sleep (SM = 1 or 2). To gather more samples when awake, set the IR (Sample Rate) parameter.
For Cyclic Sleep modes: If the IR parameter is set, the module will stay awake until the IT (Sam-
ples before TX) parameter is met. The module will stay awake for ST (Time before Sleep) time.
Applicable Commands: IR (Sample Rate), IT (Samples before TX), SM (Sleep Mode), IC (DIO
Change Detect)
When “DIO Change Detect” is enabled (using the IC command), DIO lines 0-7 are monitored.
When a change is detected on a DIO line, the following will occur:
Note: Change detect will not affect Pin Sleep wake-up. The D8 pin (DTR/Sleep_RQ/DI8) is the only
line that will wake a module from Pin Sleep. If not all samples are collected, the module will still
enter Sleep Mode after a change detect packet is sent.
Applicable Commands: IC (DIO Change Detect), IT (Samples before TX)
NOTE: Change detect is only supported when the Dx (DIOx Configuration) parameter equals 3,4 or 5.
The Sample Rate (Interval) feature allows enabled ADC and DIO pins to be read periodically on
modules that are not configured to operate in Sleep Mode. When one of the Sleep Modes is
enabled and the IR (Sample Rate) parameter set, the module will stay awake until IT (Samples
before TX) samples have been collected.
Once a particular pin is enabled, the appropriate sample rate must be chosen. The maximum sam-
ple rate that can be achieved while using one A/D line is 1 sample/ms or 1 KHz (Note that the
modem will not be able to keep up with transmission when IR & IT are equal to “1”).
Applicable Commands: IR (Sample Rate), IT (Samples before TX), SM (Sleep Mode)
1.
2.
© 2007 MaxStream, Inc.
• 0x82 for RX (Receive) Packet: 64-bit address I/O
• 0x83 for RX (Receive) Packet: 16-bit address I/O
An RF packet is sent with the updated DIO pin levels. This packet will not contain any ADC
samples.
Any queued samples are transmitted before the change detect data. This may result in
receiving a packet with less than IT (Samples before TX) samples.
Chapter 2 ‐ RF Module Operation
13