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DLPC3479: Internal interrupt status of Read System Status (D1h)

Koichi Kadowaki
Prodigy 100 points
Part Number: DLPC3479
Other Parts Discussed in Thread: DLPA3005

Tool/software:

Could you please provide details on the following?

Bit 3 of Byte 3 (Internal interrupt status) in Read System Status (D1h) in the DLPC3479 Software Programmer's Guide

I built a board using the DLPC3479 and DLPA3005.
The board is working fine.
However, one of the boards I have is not working.
When I check Read System Status (D1h), Byte 3 is 0x08.
The DLPC3479 Software Programmer's Guide states the following:
b(3) Reserved
'0': No Error '0': No Error
'1': Error '1': Error

  • 0
    TI__Guru 54510 points

    Hello Koichi-sama,

    This indicates that bit index 3 is 1 (fourth bit), and as you noted is reserved.  This is not defined as to whether it is an error or not.  It is not defined.  Are there any other status bits that are different from the operating board you have?

    Fizix

  • 0 in reply to Fizix
    Prodigy 100 points

    Dear Fizix-san,

    Other registers and status bits are as follows:

    Read Short Status (D0h)
    Byte1 = 0x40, ... b(0,1,4,7) is unknown. This bit is masked out before displaying.

    Read System Status (D1h)
    Byte1 = 0x00
    Byte2 = 0x00, ... b(0,1,2) is unknown. This bit is masked out before displaying.
    Byte3 = 0x08
    Byte4 = 0x00, ... b(2,3) is unknown. This bit is masked out before displaying.

    Read Communication Status (D3h)
    Byte5 = 0x00, ... b(0,3) is unknown. This bit is masked out before displaying.
    Byte6 = 0x00

    The faulty board stops projecting the splash screen after a few seconds.
    Does this information suggest anything?

    Best Regards,
    Kadowaki

  • 0 in reply to Koichi Kadowaki
    TI__Guru 54510 points

    Hello again Koichi-sama,

    I need to consult with my colleague on this.  Please allow a day or two on this.

    Fizix

  • 0 in reply to Fizix
    TI__Genius 11860 points

    Hello Koichi-sama,

    Please advise what version of firmware you have programmed your board with.

    Additionally, you might be able to utilize these software and hardware debug tool - FAQ here.

    Best,

    Aaron

  • 0 in reply to Aaron Black
    Prodigy 100 points

    Dear Aaron-san,

    The firmware version is 8.4.1.
    I will try the debug tool.

    Best Regards,
    Kadowaki