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IWR1443: Default pinmux settings

user244678
Expert 1365 points
Part Number: IWR1443
Other Parts Discussed in Thread: , TIDEP-0091

Hi,

What are the default pinmux settings for the following pins on the IWR1443?

・P4, R3, R4 and R5

According to Table 4-1. Signal Descriptions in the data sheet, all of them are written as RESERVED.

When I checked the pin status from reset release to completion of program loading with an oscilloscope, it was as follows.

・P4 Fixed high level (3.3V)

・R3 Fixed high level (3.3V)

・R4 HIGH/LOW toggle during program load

・R5 Fixed high level (3.3V)

Best regards,

Hiroyuki Taguchi

  • 0
    TI__Genius 9600 points

    Hey Hiroyuki,

    The pins P4, R3, R4 and R5 are all RESERVED pins. The pins have following default pin status R3 - pulldown, R4- pullup, R5- pulldown, P4 - pulldown. Please refer the Pin Multiplexing Table and check across the signal names MOSI_2, MISO_2, SPI_CLK_2, SPI_CS_2

    Regards

    Ankit

  • 0 in reply to Ankit Mohanty
    Expert 1365 points

    Hi Ankit,

    Thank you for your reply.

    Please tell me more.

    Using the TIDEP-0091 sample demo and IWR1443BOOST, I observed the R4 and R5 terminals.

    Figure 1 shows the waveform of the R5 pin.

    Figure 2 shows the waveform of the R4 pin.

    Q1. Some signal is output to R5 while the program is being loaded from the QSPI FLASH Memory.

    When I zoomed in on the waveform, it seems that a UART-like signal is being output.

    What are the pinmux settings for this period? Is it MSS_UARTB_TX(MSS_LOGGER) ?

    Q2. After calling the demo_staticConfig function, some signal is output to the R4 terminal.

    When I zoomed in on the waveform, it seems that a UART-like signal is being output.

    What are the pinmux settings for this period? Is it BSS_UART_TX ?

    I have not changed the pinmux settings for TIDEP-0091.

    Figure 1. R5 pin waveform

    Figure 2. R4 pin waveform

    Best Regards,

    Hiroyuki

  • 0 in reply to user244678
    TI__Genius 14415 points

    Hello,

    We are looking into this and will respond within the next 2 days.

    Regards,

    Jackson

  • +1 in reply to Jackson Thomas
    TI__Genius 11680 points

    Hi Hiroyuki,

    Yes. 

    1. R5 is MSS_UARTB_TX(MSS_LOGGER) 

    2. R4 is  BSS_UART_TX

    Regards,

    Abhishek