IWR1443BOOST: The newest block diagram

iwr1443_levelsensingdiagrams.vsdHello Hitoshi,

There are several different block diagrams depending on the application.   I noticed you have TIDEP-0091  which is the Level Sensing application.   The Design description explains the system choices from last year during development.   The setup of the IWR1443 is very dependent on system parameters, if functional safety is considered, the selection of the host processor and methods.

The TIDEP-0091 diagram, is newer than the IWR1443 EVM block diagram.

I have included a new VISIO diagram so you can customize it.

Here are some of the consideration areas:

  a) DC power - there are two different PMIC implementations, see SWRA577

  b) Host Processor - I have added some additional signals to the MSP432 in the diagram, this allows for data transport over SPI or

       like the Out of Box demo, UART.   In the new diagram, the SOP pins, nRESET, control of the mmwave Sensor allows for the

       customer to add a feature like Uniflash, during design or fab.

  c) the additional components shown with the MSP432 provide for the current output and HART external control/data.

  d) The external 24v to 5v power is supplied from a Wide Vin TI DCDC converter, to the LP87524 PMIC.   There is a TI application

        guide LM536025, with automotive use case, the WideVin does support 24v operation.

  e) PMIC status and I2C Control are added to MSP432, these are optional    

  f)  Power supervision is provided for both the MSP432 and the mmwave Sensor

  g) nERROR Out from the mmwave Sensor is added, this provides for a GPIO error.  WarmReset is another mmwave Sensor output

       this is optional.

Regards,

Joe Quintal