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RTC of TWL6032 failure

MASASHI MIZUKANE
Prodigy 30 points
Other Parts Discussed in Thread: TWL6032

We would like to use the RTC function of TWL6032.

So, We set 1 the STOP_RTC bit of the RTC_CTRL_REG Register. But, We read the register, and the STOP_RTC is 0(RTC is frozen).

What is the cause by which RTC won't be runnning?Is other register setting needed?

Any advice would be appreciated.

  • 0
    TI__Genius 17380 points
    Hello,

    Which OTP version of TWL6032 are you using (i.e. TWL6032A2B4)?

    Can you provide a full register dump (at least the RTC registers, preferably all registers)?

    Is the VRTC up?

    Are you using external oscillator? If so, which?

    Thanks,
    Kevin LaRosa
  • 0 in reply to Kevin LaRosa
    Prodigy 30 points

    Hi Kevin-san.

    Thank you very much for your reply.

    The version of TWL6032 is TWL6032A2B0.

    The VRTC is Up. The STATE Bit of VRTC_CFG_STATE register is ON.

    We using external oscillator of 32k.

    The rgister dump by omapconf.  

    -----------------------------------------------------------------------------------------------------

    REGISTER DUMP FOR TWL6032
    =========================================================
    BUS=1 SLAVE ADDR=0x48
    ---------------------------------------------------------
           0  1  2  3  4  5  6  7  8  9  a  b  c  d  e  f
    0x00: 00 00 00 01 01 00 00 00 01 00 00 01 01 00 00 00
    0x10: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 01
    0x20: c0 23 01 06 0e 00 0e 02 00 01 e0 00 20 c2 00 04
    0x30: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
    0x40: 00 05 01 00 3c 00 00 05 01 00 00 06 00 00 00 00
    0x50: 00 00 00 05 01 00 00 06 00 05 01 00 00 06 00 00
    0x60: 00 00 00 00 00 05 01 00 29 00 00 00 00 00 00 00
    0x70: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
    0x80: 00 05 01 0c 00 03 01 15 00 05 00 09 00 05 00 03
    0x90: 00 05 01 09 00 05 01 09 00 05 00 09 00 05 00 0a
    0xa0: 00 05 00 18 00 05 00 09 00 00 00 00 00 00 05 01
    0xb0: 00 05 01 00 05 01 00 05 01 00 05 01 00 05 01 00
    0xc0: 01 01 00 0d 01 00 05 01 00 05 00 00 01 01 00 05
    0xd0: 01 01 64 e6 ac 38 c2 3f ff 3f 00 00 00 00 00 00
    0xe0: 5b 00 11 00 00 10 52 03 00 86 02 80 1a 80 08 80
    0xf0: 55 65 15 00 ff 01 5b a3 1e 11 01 00 29 00 00 00
    =========================================================

    BUS=1 SLAVE ADDR=0x49
    ---------------------------------------------------------
           0  1  2  3  4  5  6  7  8  9  a  b  c  d  e  f
    0x00: 51 04 32 c0 04 04 14 14 01 00 00 00 00 00 00 00
    0x10: 15 15 00 00 00 00 00 00 00 00 00 00 00 00 00 00
    0x20: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
    0x30: 00 00 00 00 00 00 06 00 00 00 00 00 00 00 00 00
    0x40: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
    0x50: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
    0x60: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
    0x70: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
    0x80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
    0x90: 00 00 00 04 00 00 00 00 00 00 00 00 00 00 00 00
    0xa0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
    0xb0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
    0xc0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
    0xd0: 00 00 00 e6 ff ea e6 ff ea 00 00 38 02 03 40 00
    0xe0: 00 00 20 80 00 00 00 00 00 20 02 01 02 04 29 23
    0xf0: 0e 64 00 00 ff 20 00 00 00 00 00 00 00 00 00 cd
    =========================================================

    BUS=1 SLAVE ADDR=0x4A
    ---------------------------------------------------------
           0  1  2  3  4  5  6  7  8  9  a  b  c  d  e  f
    0x00: 30 30 30 30 30 30 30 30 30 30 00 00 00 00 00 00
    0x10: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
    0x20: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
    0x30: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
    0x40: 00 00 00 00 00 00 00 00 01 01 00 00 00 00 00 00
    0x50: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
    0x60: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
    0x70: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
    0x80: 0f 20 15 41 06 47 01 02 00 00 00 00 00 00 00 00
    0x90: 01 22 0e 06 18 0f 87 88 2d 92 00 05 07 0a 11 01
    0xa0: 01 01 01 01 03 02 02 02 02 03 01 03 04 02 85 1d
    0xb0: 02 02 02 00 a5 1d 0d d5 1d 03 03 03 03 66 1d 02
    0xc0: 63 1d 02 08 04 00 00 00 00 00 00 04 04 02 06 02
    0xd0: 05 13 35 1b 05 03 08 00 06 03 0e 02 09 04 01 30
    0xe0: da a7 a7 00 00 32 32 29 06 0e 02 03 18 00 0c 00
    0xf0: 00 00 00 38 38 38 38 38 38 38 38 38 38 00 9e 04

    -----------------------------------------------------------------------------------------------------

    Thanks,

    Masashi Mizukane.

     

  • 0 in reply to MASASHI MIZUKANE
    TI__Genius 17380 points

    Mizukane-san,

    Do you have MSECURE pin set to '0' or '1'? This OTP has MSECURE enabled.

    Is there output on the CLK32KAO?


    Thanks,
    Kevin LaRosa

  • 0 in reply to Kevin LaRosa
    Prodigy 30 points

    Hi Kevin-san,

    My problem has been solved.

    We made a mistake in setting of OMAP4460 PADCONF Register. So, the pin setting of MSECURE was safemode.

    RTC is enable by correcting setting.

    Thank you for giving us good advice.

    Thanks,

    Masashi Mizukane

  • 0 in reply to MASASHI MIZUKANE
    TI__Genius 17380 points
    Mizukane-san,

    Thank you for updating on the root cause of the issue. Good to hear the issue is resolved.

    Thank you,
    Kevin LaRosa