4.30 Functional Strap Definitions –Table 2
The following signals are used for static configuration. They are sampled at the rising edge of PWROK
to select configurations (except as noted), and then revert later to their normal usage. To invoke the
associated mode, the signal should be driven at least four PCI clocks prior to the time it is sampled.
Ibex Peak has implemented Soft Straps. Soft Straps are used to configure specific functions within the
Ibex Peak and processor very early in the boot process before BIOS or SW intervention. When
Descriptor Mode is enabled, the Ibex Peak will read Soft Strap data out of the SPI device prior to the de-
assertion of reset to both the Management Engine and the Host system.
Name
Usage
When
Sampled
Comment
SPKR
No Reboot
Rising edge of
PWROK
The signal has a weak internal pull-down. Note: the internal
pull-down is disabled after PLTRST# de-asserts. If the signal
is sampled high, this indicates that the system is strapped to the
“No Reboot” mode (Ibex Peak will disable the TCO
Timer system reboot feature). The status of this strap is
readable via the NO REBOOT bit (Chipset Config Registers:
Offset 3410h:bit 5).
INIT3_3V#
Reserved
Rising edge of
PWROK
This signal has a weak internal pull up.
Note:
the internal pull-up is disabled after PLTRST#
de-asserts.
NOTE:
This signal should not be pulled low
