SWRS188D May   2017  – December 2021 AWR1243

PRODUCTION DATA  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Functional Block Diagram
  5. 5 Revision History
  6. 6 Device Comparison
    1. 6.1 Related Products
  7. 7 Terminal Configuration and Functions
    1. 7.1 Pin Diagram
    2. 7.2 Signal Descriptions
      1. 7.2.1 Signal Descriptions
  8. 8 Specifications
    1. 8.1 Absolute Maximum Ratings
    2. 8.2 ESD Ratings
    3. 8.3 Power-On Hours (POH)
    4. 8.4 Recommended Operating Conditions
    5. 8.5 Power Supply Specifications
    6. 8.6 Power Consumption Summary
    7. 8.7 RF Specification
    8. 8.8 Thermal Resistance Characteristics for FCBGA Package [ABL0161]
    9. 8.9 Timing and Switching Characteristics
      1. 8.9.1 Power Supply Sequencing and Reset Timing
      2. 8.9.2 Synchronized Frame Triggering
      3. 8.9.3 Input Clocks and Oscillators
        1. 8.9.3.1 Clock Specifications
      4. 8.9.4 Multibuffered / Standard Serial Peripheral Interface (MibSPI)
        1. 8.9.4.1 Peripheral Description
          1. 8.9.4.1.1 SPI Timing Conditions
          2. 8.9.4.1.2 SPI Peripheral Mode Switching Parameters (SPICLK = input, SPISIMO = input, and SPISOMI = output)
          3. 8.9.4.1.3 SPI Peripheral Mode Timing Requirements (SPICLK = input, SPISIMO = input, and SPISOMI = output)
        2. 8.9.4.2 Typical Interface Protocol Diagram (Peripheral Mode)
      5. 8.9.5 LVDS Interface Configuration
        1. 8.9.5.1 LVDS Interface Timings
      6. 8.9.6 General-Purpose Input/Output
        1. 8.9.6.1 Switching Characteristics for Output Timing versus Load Capacitance (CL)
      7. 8.9.7 Camera Serial Interface (CSI)
        1. 8.9.7.1 CSI Switching Characteristics
  9. 9 Detailed Description
    1. 9.1 Overview
    2. 9.2 Functional Block Diagram
    3. 9.3 Subsystems
      1. 9.3.1 RF and Analog Subsystem
        1. 9.3.1.1 Clock Subsystem
        2. 9.3.1.2 Transmit Subsystem
        3. 9.3.1.3 Receive Subsystem
      2. 9.3.2 Host Interface
    4. 9.4 Other Subsystems
      1. 9.4.1 ADC Data Format Over CSI2 Interface
  10. 10Monitoring and Diagnostics
    1. 10.1 Monitoring and Diagnostic Mechanisms
  11. 11Applications, Implementation, and Layout
    1. 11.1 Application Information
    2. 11.2 Short-, Medium-, and Long-Range Radar
    3. 11.3 Reference Schematic
  12. 12Device and Documentation Support
    1. 12.1 Device Nomenclature
    2. 12.2 Tools and Software
    3. 12.3 Documentation Support
    4. 12.4 Support Resources
    5. 12.5 Trademarks
    6. 12.6 Electrostatic Discharge Caution
    7. 12.7 Glossary
  13. 13Mechanical, Packaging, and Orderable Information
    1. 13.1 Packaging Information
    2. 13.2 Tray Information for

9.4.1 ADC Data Format Over CSI2 Interface

The AWR1243 device uses MIPI D-PHY / CSI2-based format to transfer the raw ADC samples to the external MCU. This is shown in Figure 9-5.

  • Supports four data lanes
  • CSI-2 data rate scalable from 150 Mbps to 600 Mbps per lane
  • Virtual channel based
  • CRC generation
GUID-99E680AA-A0BC-4D48-A6A1-F87628644E72-low.gif
Frame Start – CSi2 VSYNC Start Short PacketLine Start – CSI2 HSYNC Start Short PacketLine End – CSI2 HSYNC End Short PacketFrame End – CSi2 VSYNC End Short Packet
Figure 9-5 CSI-2 Transmission Format

The data payload is constructed with the following three types of information:

  • Chirp profile information
  • The actual chirp number
  • ADC data corresponding to chirps of all four channels
    • Interleaved fashion
  • Chirp quality data (configurable)

The payload is then split across the four physical data lanes and transmitted to the receiving D-PHY. The data packet packing format is shown in Figure 9-6

GUID-0153C1B1-1652-4557-90D5-866F2612DBD6-low.gifFigure 9-6 Data Packet Packing Format for 12-Bit Complex Configuration