User's Manual

System Overview and Functional Descriptions
1322x-USB Reference Manual, Rev. 1.1
3-2 Freescale Semiconductor
Figure 3-2. MC1322x Block Diagram
The RF radio interface provides for low cost and high density as shown in Figure 3-3. An onboard balun
along with a TX/RX switch allows direct connection to a single-ended 50-Ω antenna. The integrated PA
provides programmable output power typically from -30 dBm to +4 dBm, and the RX LNA provides -95
dBm sensitivity. This solution also has onboard bypass capacitors and crystal load capacitors for the
smallest footprint in the industry. All components are integrated into the package except the crystal and
antenna.
Figure 3-3. MC1322x RF Interface
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
ANALOG
TRANSMITTER
ANALOG
RECEIVER
RF
TX/RX
SWITCH
BALUN
LNA
PA