User's Manual

1322x-USB Reference Manual, Rev. 1.1
Freescale Semiconductor 3-1
Chapter 3
System Overview and Functional Descriptions
This section provides an overview of the 1322x USB Dongle/Zniffer and its connections.
3.1 System Block Diagram
The following is the 1322x USB Dongle/Zniffer system level block diagram.
Figure 3-1. 1322x USB Dongle/Zniffer Block Diagram
3.2 System Overview
The heart of the 1322x USB Dongle/Zniffer is Freescale’s MC1322x 99-pin LGA Platform-in-Package
(PiP) solution that can be used for wireless applications ranging from simple proprietary point-to-point
connectivity to complete ZigBee mesh networking. The MC1322x is designed to provide a highly
integrated, total solution, with premier processing capabilities and very low power consumption.
The MC1322x MCU resources offer superior processing power for ZigBee and IEEE 802.15.4
applications. A full 32-bit ARM7TDMI-S core operates up to 26 MHz. A 128 Kbyte FLASH memory is
mirrored into a 96 Kbyte RAM for upper stack and applications software. In addition, an 80 Kbyte ROM
is available for boot software, peripheral device drivers, standardized IEEE 802.15.4 MAC and
communications stack software. A full set of peripherals and Direct Memory Access (DMA) capability for
transceiver packet data complement the processor core.
MC1322xV
Advanced ZigBee™-
Compliant PiP
USB 2.0
USB
Interface
FT232R
UART
3.3 Vdc
JTAG Debug
Chip Antenna