User Manual

12311-MRB
12311 Development Hardware Reference Manual, Rev. 1
Freescale Semiconductor 3-5
3.2 Functional Description
The 12311-MRB is built around Freescale’s MC12311 56-pin LGA platform. Figure 3-2 shows a simple
block diagram. This board is intended as a simple evaluation platform and as a building block for
application development. The 4-layer board provides the MC12311 with its required RF circuitry, 32 MHz
reference oscillator crystal, and power supply bypassing. The layout for this base level functionality can
be used as a reference layout by the user target board.
In additional to the base MC12311 functionality, the 12311-MRB provides features to assist in debug, reset
button, simple power manager, and expansion connectors for the GPIO. In the following sections, refer to:
• Figure 3-1 for location of connectors and features
• Figure 3-3 for the functional blocks
• Figure 3-9 for the board schematic
Figure 3-3. 12311-MRB Block Diagram
3.2.1 RF Performance and Considerations
The MC12311 transceiver is a single-chip integrated circuit ideally suited for today's high performance
ISM band RF applications. It is intended for use as a high-performance, low-cost FSK and OOK RF
transceiver for robust, frequency agile, half-duplex bi-directional RF links. The MC12311 is intended for
applications over a wide frequency range, including the 868 MHz European and the 902-928 MHz North
American ISM bands.