82801FB Datasheet, PDF (87/786 Pages) Intel Corporation – Intel I/O Controller Hub 6 (ICH6) Family

Pin States
Table 3-4. Power Plane and States for Output and I/O Signals for Mobile Configurations
(Sheet 3 of 4)
Signal Name
DPRSTP#
SUSCLK
Power
Plane
Vcc3_3
VccSus3_3
During
Immediately
PLTRST#⁶ / after PLTRST#⁶ / C3/C4
S1
RSMRST#⁷
RSMRST#⁷
High
High
Low/High⁵ High
Low
Running
S3_COLD13 S4/S5
Off
Off
Processor Interface
A20M#
V_CPU_IO See Note 1
See Note 1
Defined
High
Off
Off
CPUPWRGD
Vcc3_3 See Note 3
High-Z
High-Z
High-Z
Off
Off
CPUSLP#
V_CPU_IO
High
High
High
Defined
Off
Off
IGNNE#
V_CPU_IO See Note 1
See Note 1
High
High
Off
Off
INIT#
V_CPU_IO
High
High
High
High
Off
Off
INIT3_3V#
Vcc3_3
High
High
High
High
Off
Off
INTR
V_CPU_IO See Note 8
See Note 8
Defined
Low
Off
Off
NMI
V_CPU_IO See Note 8
See Note 8
Defined
Low
Off
Off
SMI#
V_CPU_IO
High
High
Defined
High
Off
Off
STPCLK#
V_CPU_IO
High
High
Low
Low
Off
Off
DPSLP#
V_CPU_IO
High
High
High/Low High
Off
Off
SMBus Interface
SMBCLK,
SMBDATA
SMLINK[1:0]
LINKALERT#
VccSus3_3
VccSus3_3
VccSus3_3
High-Z
High-Z
Defined
System Management Interface
High-Z
High-Z
Defined
High-Z
High-Z
Defined
Defined
Defined
Defined
Defined Defined
Defined Defined
Defined Defined
SPKR
Miscellaneous Signals
High-Z with
Vcc3_3 Internal Pull-
Low
down
Defined Defined
Off
Off
AC ’97 Interface
ACZ_RST#
VccSus3_3
Low
ACZ_SDOUT
Vcc3_3
Low
ACZ_SYNC
Vcc3_3
Low
Low
Running
Running
Cold
High
Reset Bit
Low
Low
(High)
Running
Low
Off
Off
Running
Low
Off
Off
Intel^® I/O Controller Hub 6 (ICH6) Family Datasheet
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