User's Manual
Table Of Contents
- About This Book
- Chapter 1 Safety Information
- Chapter 2 1322x Network Node Module Overview and Description
- Chapter 3 System Overview and Functional Block Descriptions
- Chapter 4 Interface Locations and Pinouts
- 4.1 Overview
- 4.2 Power Management
- 4.3 RF Circuitry
- 4.4 USB Connector (“B” Receptacle)
- 4.5 LEDs, Switch, Buttons and Joystick
- 4.6 LCD Connector
- 4.7 Debug/Development Connectors
- 4.8 Audio Subsystem Connections
- 4.9 GPIO Connector
- 4.10 FLASH Memory Recovery Jumpers and Erase
- 4.11 ADC Voltage References
- 4.12 Jumper Selection
- Chapter 5 Schematic, Board Layout, and Bill of Material
System Overview and Functional Block Descriptions
1322x Network Node Reference Manual, Rev. 1.1
3-4 Freescale Semiconductor
3.4 Low-cost 2.4 GHz ISM Band radio
The MC1322x provides an onboard balun, antenna switch, and LNA. The only external component
required for the radio is an antenna. The Network Node provides a PCB-mounted SMA that connects to
an external antenna for a complete solution. Figure 3-4 shows the RF network external to the MC1322x.
• Typical output power is 0 dBm, with +2 dBm max
• Typical sensitivity is -95 dBm.
• Frequency range is 2405 to 2480 MHz
• Typical range (outdoors, line of sight) is 300 meters
Figure 3-4. Network Node RF Network
Freescale recommends using the provided SMA connector to mount the provided antenna (see Section 4.3,
“RF Circuitry”).
3.5 USB Interface
For many applications or demonstrations it is desirable to connect the Network Node to a PC or other
device. A USB port is provided with a USB “B” receptacle plug. The port is connected to a FTDI FT232R
USB UART device that appears as a Virtual COM port (VCP) to the PC. PC drivers are available with the
module.
The USB interface is configured as a "Bus Powered" device and will therefore draw all required power
from the USB interface. The device is USB 2.0 full speed compatible.
3.6 User Interface
The Network Node provides multiple means for user interface for both debug and demonstration.
• Four individual pushbuttons can be used as input, and a 4-direction tactile joystick switch with
center push is wired in parallel with the individual pushbuttons. These pushbuttons have interrupt
generation capability.
• Four individual LEDs can be used as indicators for debug or status.
J7
SMA
L1
3.9nH
Not Mounted
C3
1pF
Not Mounted
RF_RX_TX
RF
C54
10pF
RF_GND