User's Manual

System Overview and Functional Block Descriptions
1322x Network Node Reference Manual, Rev. 1.1
3-2 Freescale Semiconductor
3.2 System Overview
The heart of the 1322x Network Node 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.
Figure 3-2. MC1322x Block Diagram
On-board peripherals include
• Two dedicated UART modules capable of 2Mbps with CTS/RTS support
• SPI port with programmable master and slave operation
• Keyboard interface capability.
• Two 12-bit analog-to-digital converters (ADCs) with 8 input channels
• Four independent 16-bit timers with PWM capability.
• Inter-integrated circuit (I2C) interface
• Synchronous Serial Interface (SSI) with I2S and SPI capability and FIFO data buffering
TIMER
MODULE
(TMR)
(4 Tmr Blocks)
UART
MODULE
(UART0)
UART
MODULE
(UART1)
SYNC SERIAL
INTERFACE
(SSI/i2S)
KEYBOARD
INTERFACE
(KBI)
INTER-IC BUS
MODULE
(I2C)
SERIAL
PERIPHERAL
INTERFACE
(SPI)
DUAL
12-BIT
ADC
MODULE
GPIO and IO
CONTROL
UP TO 64 IO PINS
ARM7
TDMI-S
32-BIT
CPU
BUS
INTERFACE
& MEMORY
ARBITRATOR
ARM
INTERRUPT
CONTROLLER
(AITC)
JTAG/
Nexus
DEBUG
ADVANCED
SECURITY
MODULE
(ASM)
CLOCK &
RESET
MODULE
(CRM)
RADIO
INTERFACE
MODULE
(RIF)
96KBYTE
SRAM
(24K WORDS x
32 BITS)
80KBYTE
ROM
(20KWORDS x
32 BITS)
RF
OSCILLATOR
&
CLOCK GENERATION
SPI
FLASH
MODULE
(SPIF)
802.15.4
MAC
ACCELERATOR
(MACA)
DIGITAL
MODEM
TX
MODEM
RX
MODEM
128KBYTE
NON-VOLATILE
MEMORY
(SERIAL
FLASH)
ANALOG
TRANSMITTER
ANALOG
RECEIVER
RF
TX/RX
SWITCH
IEEE 802.15.4 TRANSCEIVER
BALUN
ANALOG
POWER
MANAGEMENT
&
VOLTAGE
REGULATION
MC13225
Platform-in-Package (PiP)
IEEE 802.15.4/ZIGBEE SOLUTION
Buck
Regulator
24 MHz (typ) 32.768 KHz (optional)
BATTERY
DETECT