307013-003 Datasheet, PDF (84/848 Pages) Intel Corporation – Intel I/O Controller Hub 7

Intel^® ICH7 Pin States
Table 3-3. Power Plane and States for Output and I/O Signals for Desktop Only
Configurations (Sheet 4 of 5)
Signal Name
Power
Plane
During
PLTRST#¹ /
RSMRST#²
Immediately
after
PLTRST#¹ /
RSMRST#²
S1
S3_COLD3
STPCLK#
Core
High
High
Low
Off
SMBus Interface
SMBCLK, SMBDATA Suspend
High-Z
High-Z
Defined Defined
System Management Interface
SMLINK[1:0]
LINKALERT#
Suspend
Suspend
High-Z
High-Z
High-Z
High-Z
Defined
Defined
Defined
Defined
Miscellaneous Signals
SPKR
High-Z with
Core
Internal Pull-
Low
down
Defined
Off
AC ’97 Interface
ACZ_RST#
ACZ_SDOUT
ACZ_SYNC
ACZ_RST#
ACZ_SDOUT
ACZ_SYNC
ACZ_BIT_CLK
Suspend
Low
Low
Low
Core
Low
Running
Low
Core
Low
Running
Low
Intel^® High Definition Audio Interface
Suspend
Low
Low⁹
Running
High-Z with
Core
Internal Pull-
Running
Low
down
High-Z with
Core
Internal Pull-
Running
Low
down
High-Z with
Core
Internal Pull-
Low9
Low
down
Low
Off
Off
Low
Off
Off
Off
Unmultiplexed GPIO Signals
GPIO[7:6, 0]
GPIO[15:12,10:8]
GPIO16
GPIO18
GPIO20
GPIO24
GPIO25
GPIO[28:26]
GPIO[33:32]
GPIO34
Core
Suspend
Core
Core
Core
Suspend
Suspend
Suspend
Core
Core
Input
Input
Low
High
High
No Change
High
Low
High
Low
Input
Input
Low
See Note 10
High
No Change
High¹¹
Low
High
Low
Driven
Driven
Defined
Defined
Defined
Defined
Defined
Defined
Defined
Defined
Off
Driven
Off
Off
Off
Defined
Defined
Defined
Off
Off
S4/S5
Off
Defined
Defined
Defined
Off
Low
Off
Off
Low
Off
Off
Off
Off
Driven
Off
Off
Off
Defined
Defined
Defined
Off
Off
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Intel ^® ICH7 Family Datasheet