SWRU629 September   2024

 

  1.   1
  2.   Description
  3.   Features
  4.   4
  5. 1Evaluation Module Overview
    1. 1.1 Introduction
    2. 1.2 Kit Contents
    3. 1.3 Specification
    4. 1.4 Device Information
  6. 2Hardware
    1. 2.1 Wired Connections, Jumper Settings, Buttons, and LEDs
      1. 2.1.1  SWD Interface
      2. 2.1.2  I2C Connections
        1. 2.1.2.1 Default I2C Addresses
      3. 2.1.3  UART Signals
      4. 2.1.4  SD Card Interface
      5. 2.1.5  External Memory Interface
      6. 2.1.6  ADC Interface
      7. 2.1.7  Reset Pull-up Jumper
      8. 2.1.8  Push Buttons
      9. 2.1.9  LED Indicators
      10. 2.1.10 LaunchPad Header Pin Assignment
    2. 2.2 Power
      1. 2.2.1 VIO Selection
      2. 2.2.2 Measure the CC35xxE Current Draw
        1. 2.2.2.1 Low Current Measurement (LPDS)
        2. 2.2.2.2 Active Current Measurement
    3. 2.3 Clocking
    4. 2.4 Conducted RF Testing
    5. 2.5 Evaluation Setup
      1. 2.5.1 Wi-Fi Toolbox LP-EM-CC35X1 Hardware Setup
  7. 3Hardware Design Files
    1. 3.1 Schematics
    2. 3.2 PCB Layouts
    3. 3.3 Bill of Materials (BOM)
  8. 4Additional Information
    1. 4.1 Trademarks

2.1.2 I2C Connections

The CC35xxE features two independent I2C peripherals, called I2C0 and I2C1. The LP-EM-CC35X1 allows you to interface to these I2C buses via the LaunchPad header pins.

The LP-EM-CC35X1 also features an accelerometer and a temperature sensor for the out-of-box demo. These features are connected to the I2C1 bus, and can be isolated using the jumpers provided (J15 and J28). By removing J15 and J18, the accelerometer and the temperature sensors are isolated from the I2C1 bus.

LP-EM-CC35X1 I2C Connections Figure 2-5 I2C Connections
Table 2-3 I2C Jumper Definitions
Reference Use Comments
J15 I2C1 CLK Jumpers populated: onboard sensors connected

Jumpers not populated: onboard sensors disconnected
J18 I2C1 Data
Note: Both I2C buses have on-board pull-up resistors on the data and clk lines.