NH82801DBSL8DE 869490 Intel, NH82801DBSL8DE 869490 Datasheet - Page 59
NH82801DBSL8DE 869490
Manufacturer Part Number
NH82801DBSL8DE 869490
Description
Manufacturer
Intel
Datasheet
1.NH82801DBSL8DE_869490.pdf
(587 pages)
Specifications of NH82801DBSL8DE 869490
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3.4
Intel
®
Table 3-4. Power Plane and States for Output and I/O Signal (Sheet 1 of 4)
82801DB ICH4 Datasheet
Output and I/O Signals Planes and States
Table 3-4
various times. Within the table, the following terms are used:
“High-Z”
“High”
“Low”
“Defined”
“Undefined”
“Running”
“Off”
Note that the signal levels are the same in S4 and S5.
AD[31:0]
C/BE#[3:0]
DEVSEL#
FRAME#
GNT[0:4]#
GNT[A:B]#
IRDY#, TRDY#
PAR
PCIRST#
PERR#
PLOCK#
STOP#
Signal Name
shows the power plane associated with the output and I/O signals, as well as the state at
Resume I/O
Main I/O
Main I/O
Main I/O
Main I/O
Main I/O
Main I/O
Main I/O
Main I/O
Main I/O
Main I/O
Main I/O
Power
Plane
Tri-state. ICH4 not driving the signal high or low.
ICH4 is driving the signal to a logic ‘1’
ICH4 is driving the signal to a logic ‘0’
Driven to a level that is defined by the function (will be high or low)
ICH4 is driving the signal, but the value is indeterminate.
Clock is toggling or signal is transitioning because function not stopping
The power plane is off, so ICH4 is not driving
RSMRST#
Internal Pull-
PCIRST#
High-Z with
During
High-Z
High-Z
High-Z
High-Z
High-Z
High-Z
High-Z
High-Z
High-Z
High
Low
Up
PCI Bus
4
5,7
/
Immediately
PCIRST#
RSMRST#
Undefined
Undefined
Undefined
Intel
High-Z
High-Z
High-Z
High-Z
High-Z
High-Z
after
High
High
High
®
4
ICH4 Power Planes and Pin States
5
/
Defined
Defined
Defined
High-Z
High-Z
High-Z
High-Z
High-Z
High-Z
High
High
High
S1
Low
S3
Off
Off
Off
Off
Off
Off
Off
Off
Off
Off
Off
S4/S5
Low
Off
Off
Off
Off
Off
Off
Off
Off
Off
Off
Off
59
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