307013-003 Datasheet, PDF (75/848 Pages) Intel Corporation – Intel I/O Controller Hub 7

Signal Description
Table 2-22. Power and Ground Signals (Sheet 2 of 3)
Name
Description
V5REF1
(Ultra Mobile
Only)
These pins provide the reference for 5 V tolerance on core well inputs (1 pin).
This power may be shut off in S3, S4, S5 or G3 states.
V5REF2
(Ultra Mobile
Only)
These pins provide the reference for 5 V tolerance on core well inputs (1 pin).
This power may be shut off in S3, S4, S5 or G3 states.
VccSus3_3
These pins provide the 3.3 V supply for resume well I/O buffers (24 pins). This
power is not expected to be shut off unless the system is unplugged in desktop
configurations or the main battery is removed or completely drained and AC
power is not available in mobile/Ultra Mobile configurations.
VccSus1_05
These pins provide the 1.05 V supply for resume well logic (5 pins). This power
is not expected to be shut off unless the system is unplugged in desktop
configurations or the main battery is removed or completely drained and AC
power is not available in mobile/Ultra Mobile configurations.
This voltage may be generated internally (see Section 2.24.1 for strapping
option). If generated internally, these pins should not be connected to an
external supply.
V5REF_Sus
This pin provides the reference for 5 V tolerance on resume well inputs (1 pin).
This power is not expected to be shut off unless the system is unplugged in
desktop configurations or the main battery is removed or completely drained
and AC power is not available in mobile/Ultra Mobile configurations.
VccLAN3_3
(Mobile Only)
These pins provide the 3.3 V supply for LAN Connect interface buffers (4 pins).
This is a separate power plane that may or may not be powered in S3–S5 states
depending upon the presence or absence of AC power and network connectivity.
This plane must be on in S0 and S1.
NOTE: In Desktop mode these signals are added to the VccSus3_3 group.
VccLAN1_05
(Mobile Only)
These pins provide the 1.05 V supply for LAN controller logic (2 pins). This is a
separate power plane that may or may not be powered in S3–S5 states
depending upon the presence or absence of AC power and network connectivity.
This plane must be on in S0 and S1.
NOTE: This voltage will be generated internally if VccSus1_05 is generated
internally (see Section 2.24.1 for strapping option). If generated
internally, these pins should not be connected to an external supply.
NOTE: In Desktop mode these signals are added to the VccSus1_05 group.
VccSusHDA
(Mobile/Ultra
Mobile Only)
This pin provides the suspend supply for Intel High Definition Audio (1 pins).
This pin can be either 1.5 V or 3.3 V. This power is not expected to be shut off
unless the main battery is removed or completely drained and AC power is not
available in mobile/Ultra Mobile configurations.
NOTE: In Desktop mode this signal is added to the VccSus3_3 group.
VccHDA
(Mobile/Ultra
Mobile Only)
This pin provides the core supply for Intel High Definition Audio (1 pin). This pin
can be either 1.5 V or 3.3 V. This power may be shut off in S3, S4, S5 or G3
states. This plane must be on in S0 and S1.
NOTE: In Desktop mode these signals are added to the Vcc3_3 group.
Intel ^® ICH7 Family Datasheet
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