SWRU553A September   2019  – February 2020 AWR1243 , AWR2243

 

  1.   AWRx Cascaded Radar RF Evaluation Module (MMWCAS-RF-EVM)
    1.     Trademarks
    2. 1 Getting Started
      1. 1.1 Introduction
      2. 1.2 EVM Revisions
      3. 1.3 Key Features
      4. 1.4 What is Included
        1. 1.4.1 Kit Hardware Contents
        2. 1.4.2 mmWave Studio and Matlab Post Processing
    3. 2 Hardware Description
      1. 2.1 Block Diagram
      2. 2.2 Attaching the MMWAVCAS-RF-EVM to the MMWAVCAS-DSP-EVM
      3. 2.3 Power Status LED Indicators
      4. 2.4 Reset LED Indicators
      5. 2.5 Connectors
        1. 2.5.1 Host Board Connectors(J4, J5)
        2. 2.5.2 Bench Power Connector(J6)
        3. 2.5.3 20 GHz LO Debug Connector (J3)
        4. 2.5.4 AWR OSC_CLKOUT Debug Header (J2)
        5. 2.5.5 AWR Debug Headers (J1_1, J1_2, J1_3, J1_4)
      6. 2.6 Antennas
        1. 2.6.1 TX and RX Antenna Arrays
        2. 2.6.2 PCB Antenna Element
          1. 2.6.2.1 RX Antenna Element Performance
          2. 2.6.2.2 TX Antenna Element Performance
        3. 2.6.3 Virtual Antenna Array
    4. 3 Design Files and Software Tools
      1. 3.1 Hardware Collateral
      2. 3.2 Software, Development Tools, and Example Codes for MMWCAS-RF-EVM
      3. 3.3 Critical AWRx Setup Notes
        1. 3.3.1 LDO Bypass Requirement
    5. 4 PCB Dimensions and Mounting Information
    6. 5 PCB Storage and Handling Recommendations
    7. 6 References
    8. 7 Regulatory Information
  2.   Revision History

2.4 Reset LED Indicators

The MMWAVCAS-RF-EVM board provides four LED for visually evalutingAWRx NRESET status. The NRESET is generated from a combination of PMIC #1 and PMIC #2 power good outputs and host board NRESET signals. When powering on the MMWAVCAS-RF-EVM from the MMWAVCAS-DSP-EVM the NRESET signals will be initially de-asserted. A full reset sequence will be driven later by the TDA2 host processor to initialize the AWRx devices.

swru553-cascade-rf-design-spec-diagrams-reset-led-callouts.gifFigure 7. MMWAVCAS-RF-EVM AWRx NRESET Status LED Indicators

Reset Status LED Callouts:

  1. AWRx #1 NRESET LED (DS4) - Amber LED active when NRESET is de-asserted (logic high)
  2. AWRx #2 NRESET LED (DS5) - Amber LED active when NRESET is de-asserted (logic high)
  3. AWRx #3 NRESET LED (DS6) - Amber LED active when NRESET is de-asserted (logic high)
  4. AWRx #4 NRESET LED (DS7) - Amber LED active when NRESET is de-asserted (logic high)