User's Manual
Table Of Contents
- About This Book
- Chapter 1 Safety1322x Sensor Node Information
- Chapter 2 1322x Sensor 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 Debug/Development Connector (ARM JTAG Interface)
- 4.7 Audio Subsystem Connections
- 4.8 GPIO Connector
- 4.9 FLASH Memory Recovery Jumpers and Erase
- 4.10 ADC Voltage References
- 4.11 Jumper Selection
- Chapter 5 Schematic, Board Layout, and Bill of Material
Interface Locations and Pinouts
1322x Sensor Node Reference Manual, Rev. 1.1
4-8 Freescale Semiconductor
Figure 4-5. ADC Voltage 1.5 Vdc Voltage Reference
4.11 Jumper Selection
Table 4-5 lists all the possible jumper selections for the Sensor Node. The jumpers available on the board
are:
• J7 - Selects audio output source
• J18 - Sets fixed ADC reference voltage
• J19, J20- Clears MC1322x onboard FLASH. See Table 4-5.
Table 4-5. Sensor Node Jumper Selection
Pin
Header
Pin Number
Connection
Description
Default
Setting
J7 1-2
2-3
Connect to enable audio path from DAC
Connect to enable audio path from PWM
Not mounted
Mounted
J18 1-2 Connect to enable ADC 1.5V reference Not mounted
J19, J20 1-2, 1-2 Connect both to recover/clear FLASH. See Section 4.9, “FLASH Memory
Recovery Jumpers and Erase”
Not mounted
1.5V
R1
10K
1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
U17
LM285M
R121
24.9K
1%
R120
120K
1%
1
2
J18
HDR_2X1
Not Mounted
VCC
ADC1_VREFH