307013-003 Datasheet, PDF (70/848 Pages) Intel Corporation – Intel I/O Controller Hub 7

Signal Description
2.18 Miscellaneous Signals
Table 2-18. Miscellaneous Signals
Name
Type
Description
INTVRMEN
(Desktop and
Mobile Only)
SPKR
Internal Voltage Regulator Enable: This signal enables the internal
I 1.05 V Suspend regulator when connected to VccRTC. When connected
to Vss, the internal regulator is disabled
Speaker: The SPKR signal is the output of counter 2 and is internally
“ANDed” with Port 61h bit 1 to provide Speaker Data Enable. This signal
drives an external speaker driver device, which in turn drives the
O ^{system speaker. Upon PLTRST#, its output state is 0.}
NOTE: SPKR is sampled at the rising edge of PWROK as a functional
strap. See Section 2.24.1 for more details. There is a weak
integrated pull-down resistor on SPKR pin.
RTC Reset: When asserted, this signal resets register bits in the RTC
well.
RTCRST#
(Desktop and
Mobile Only)
TP0
(Desktop
Only) /
BATLOW#
(Mobile/Ultra
Mobile Only)
TP1
(Desktop
Only) /
DPRSTP#
(Mobile/Ultra
Mobile Only)
TP2
(Desktop
Only) /
DPSLP#
(Mobile/Ultra
Mobile Only)
TP3
NOTES:
I 1.
Unless CMOS is being cleared (only to be done in the G3 power
state), the RTCRST# input must be high when all other RTC
power planes are on.
2.
In the case where the RTC battery is dead or missing on the
platform, the RTCRST# pin must rise before the RSMRST# pin.
I Test Point 0: This signal must have an external pull-up to VccSus3_3.
O Test Point 1: Route signal to a test point.
O Test Point 2: Route signal to a test point.
I/O Test Point 3: Route signal to a test point.
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Intel ^® ICH7 Family Datasheet