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
Interface Locations and Pinouts
1322x Network Node Reference Manual, Rev. 1.1
Freescale Semiconductor 4-7
4.8 Audio Subsystem Connections
The audio subsystem uses the following connections:
• 2.5mm stereo jack J12 - for headset mic and earphone
• Jumper J10 - selects audio output source. See Figure 4-4 for connections.
Figure 4-4. J10 Audio Output Source Jumper
4.9 GPIO Connector
The GPIO connector (J2) is a standard 2.54mm/0.1inch spacing, 26-pin header. The connector provides
access to MCU GPIO, an external clock source connection, a timer output, ADC inputs, the SSI port, a
UART port, the SPI port, the I
2
C port, and the serial DAC output. Power is also provided on the connector.
• VCC is the main supply voltage. Current draw should be limited to 50 mA.
• CLKIN can be used to supply an external reference clock (nominally 24 MHz). The onboard
crystal must be removed and an ac-coupling capacitor added.
• A number of the GPIO are shared with the LCD interface. Best practice is to disable the LCD data
interface to used these signals (see Table 4-5 below).
• The serial DAC output is available at the connector. The DAC output should not be selected as the
output audio source (J10) when used offboard.
Table 4-5. GPIO Connector J2 Pinouts
Pin Name Function Notes
1 TMR1 Timer I/O or GPIO Hardwired to LCD control output.
2 CLKIN Source for external clock to
reference oscillator
• 13-26 MHz reference clock with <40 ppm accuracy
• Onboard crystal must be removed
• Enable signal to MC1322x by adding C58, 10pF; see
schematic
3 VCC Voltage supply from module 3V output from on-board regulation
4 GND System ground
5 ADC1 ADC Analog Input Channel or GPIO
6 ADC2 ADC Analog Input Channel or GPIO Hardwired to LCD data buffer. Use Jumper J14 to disable.
7 ADC3 ADC Analog Input Channel or GPIO Hardwired to LCD data buffer. Use Jumper J14 to disable.
8 ADC4 ADC Analog Input Channel or GPIO Hardwired to LCD data buffer. Use Jumper J14 to disable.
1
1
2
2
3
3
J10
TSM-103-01-L-SV
1-2 DAC
3-2 PWM
Audio Select
SERIAL DAC
PWM
AUD FILTER INPUT