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66AK2G12: behavior of bootcomplete pin

Part Number: 66AK2G12

Hi,

According to the TRM, "The BOOTCOMPLETE device pad indicates the ROM boot process completion to the external system. A
value of '1' on the BOOTCOMPLETE pad is present when the ROM code sets to 1h both bits in the
BOOTCFG_BOOT_COMPLETE register. One bit is associated with the DSP and the other one with the
ARMSS. After device reset a value of '0' is present on the BOOTCOMPLETE pad." 

The only cases that BOOTCOMPLETE pin is "high" and "Low" are mentioned.

On the other hand, signal type and direction of BOOTCOMPLETE pin is "OZ = Three-state Output" in the data manual.

When does the BOOTCOMPLETE pin output Hi-Z?

During ACTIVE MODE, BOOTCOMPLETE pin outputs High (not Hi-Z), isn't it? (data manual, Figure 5-3. Power-Up Sequencing)

Thanks.

  • I have not been able to find in the design specs when the pin would output HiZ. I suspect , the highZ assignment may have been used for some mux functionality that was not implemented on the chip due to descope or the value on some cut down variants of the parts will have this pin driven from internal efuse logic.

    Regards,

    Rahul