SWRA656C May   2020  – October 2022 AWR6843 , AWR6843AOP , IWR1642 , IWR1843 , IWR6443 , IWR6843 , IWR6843AOP

 

  1.   Migrating to xWR68xx and xWR18xx Millimeter Wave Sensors
  2.   Trademarks
  3. 1Introduction
  4. 2xWR1843 Hardware/Software Migration
    1. 2.1 Migrating From xWR1642 to xWR1843
      1. 2.1.1 Device Comparison
      2. 2.1.2 Hardware Migration Notes
        1. 2.1.2.1 Antenna Addition
      3. 2.1.3 Hardware Design Checklist
      4. 2.1.4 Software Migration Notes
  5. 3xWR6843AoP ES2.0 Migration
    1. 3.1 Hardware Changes From xWR6843AoP ES1.0 to xWR6843AoP ES2.0
    2. 3.2 Software Migration From xWR6843AoP ES1.0 to xWR6843AoP ES2.0
      1. 3.2.1 xWR6843AoP ES2.0 - Platform Software Updates
      2. 3.2.2 xWR6843AoP ES2.0 - AoA Software Updates
  6. 4Helpful Resources
  7. 5Code Snapshots
    1. 5.1  SDK 3.3 API Change for MMWave_open
    2. 5.2  SDK 3.3 API Change for ADCBuf_open
    3. 5.3  SDK 3.3 API Change for CANFD_init
    4. 5.4  SDK 3.3 68xx Secondary Bootloader Update
    5. 5.5  SDK 3.3 16xx vs 68xx: Calibration Frequency Update
    6. 5.6  SDK 3.3 16xx vs 68xx: SoC Definition Updates
    7. 5.7  SDK 3.3 16xx vs 18xx: SoC Definition Updates
    8. 5.8  SDK 3.4 xWR68xx Calibration Frequency Update
    9. 5.9  SDK 3.4 Object Detect HWA DPC Range FFT Scaling
    10. 5.10 SDK 3.4 Object Detect Range HWA DPC Radar Cube Format
    11. 5.11 xWR6843AoP ES1.0 Antenna Geometry
    12. 5.12 xWR6843AoP ES2.0 Antenna Geometry
    13. 5.13 xWR6843AoP ES2.0 Antenna Geometry Code Update
    14. 5.14 Antenna Geometry Structure Usage in mmw demo
    15. 5.15 xWR6843AoP ES2.0 RX Channel Phase Compensation
  8. 6References
  9. 7Revision History

2.1.1 Device Comparison

Table 2-1 lists the key features of the xWR1642 and the xWR1843 devices that need to be considered from Hardware and software migration perspective. For more information, see the device-specific data sheets and the Industrial mmWave Radar Family Technical Reference Manual in Section 6.

Figure 2-1 and Figure 2-2 show the device symbolization change from xWR1642 to xWR1843 on device part marking.

The left side device marking shows the xWR1642 silicon and the right side device marking shows the xWR1843 silicon. For more details on the device marking, see the device-specific Errata.

GUID-19F4D5B8-013F-44F7-9215-6801067B9329-low.gifFigure 2-1 xWR1642 Device Marking
GUID-F9E6F225-5032-4779-A016-29FACBC98DA0-low.gifFigure 2-2 xWR1843 Device Marking
Table 2-1 Device Feature Comparison Table
No Device Feature Differences xWR1642 xWR1843 Hardware and Software Impact
1 Number of Transmit Channels 2 3 (1) 3rd Transmitter Antenna need to be designed. Update TX bitmap in chirpCfg
2 Maximum Sampling Rate 6.25 MHz complex 12.5 MHz complex Higher IF bandwidth and Sampling rates are available on xWR1843
3 Max I/F (Intermediate Frequency) 5 MHz 10 MHz
4 On-chip memory 1.5MB 2.0MB Software can leverage the additional memory if needed.
5 Radar Accelerator Not Applicable Hardware accelerator for FFT, filtering, and CFAR processing xWR1843 has flexibility of data processing on Hardware accelerator or DSP
6 Tx beam forming No support Supported xWR1843 has phase shifters which supports the steerable beams. Note: Antennas need to be designed to support TX beam forming operation
7 MMWAVE-SDK support SDK 2.1 (LTS) and above SDK 3.3.0 and above General software porting required compiling for xWR1843. For more information, see the Section 2.1.4.
(1) Three Tx Simultaneous operation is supported only with 1-V LDO bypass and PA LDO disable mode. In this mode, the 1-V supply needs to be fed on the VOUT PA pin.