
MC1322x Technical Data, Rev. 1.3
8
Freescale Semiconductor
802.15.4 Receiver Frame filtering.
Binaries and application examples provided
2.3.3
SynkroRF Platform
The SynkroRF Network is a general purpose, proprietary networking layer that sits on top of the IEEE
802.15.4 MAC and PHY layers. It is designed for Wireless Personal Area Networks (WPANs) and
conveys information over short distances among the participants in the network. It enables small, power
efficient, inexpensive solutions to be implemented for a wide range of applications. Some key
characteristics of an SynkroRF Network are:
An over-the-air data rate of 250 kbit/s in the 2.4 GHz band.
3 independent communication channels in the 2.4 GHz band (15, 20, and 25).
2 network node types, controller and controlled nodes.
Channel Agility mechanism.
Low Latency Tx mode automatically enabled in conditions of radio interference.
Fragmented mode transmission and reception, automatically enabled in conditions of radio
interference.
Robustness and ease of use.
Essential functionality to build and support a CE network.
The SynkroRF Network layer uses components from the standard HC(S)08 Freescale platform, which is
also used by the Freescale’s implementations of 802.15.4. MAC and ZigBee layers. For more details
about the platform components, see the Freescale Platform Reference Manual.
2.3.4
ZigBee-Based Stacks
Freescale has two independent codebases to support the two ZigBee standard specifications:
BeeStack - supports ZigBee-2007 and ZigBee Pro extensions
BeeStack Consumer - supports ZigBee RF4CE
2.3.4.1
BeeStack
Freescale’s BeeStack architecture implements the ZigBee-2007 protocol stack including both
Stack Profile 1 and Stack Profile 2 (Pro). Based on the OSI Seven-Layer model, the ZigBee stack ensures
inter-operability among networked devices. The physical (PHY), media access control (MAC), and
network (NWK) layers create the foundation for the application (APL) layers. BeeStack defines additional
services to improve the communication between layers of the protocol stack.
At the Application Layer, the application support layer (ASL) facilitates information exchange between
the Application Support Sub-Layer (APS) and application objects. Finally, ZigBee Device Objects (ZDO),
in addition to other manufacturer-designed applications, allow for a wide range of useful tasks applicable
to home and industrial automation.