82801FB Datasheet, PDF (80/786 Pages) Intel Corporation – Intel I/O Controller Hub 6 (ICH6) Family

Pin States
3. Simulation data shows that these resistor values can range from 10 kΩ to 20 kΩ.
4. Simulation data shows that these resistor values can range from 9 kΩ to 50 kΩ.
5. The pull-down resistors on ACZ_SYNC (AC ‘97) and ACZ_SDOUT (AC ‘97) are enabled during reset and
also enabled when either:
- The LSO bit (bit 3) in the AC ’97 Global Control Register (D30:F2:2C) is set to 1, or
- Both Function 2 and Function 3 of Device 30 are disabled.
Otherwise, the integrated Pull-down resistor is disabled.
6. Simulation data shows that these resistor values can range from 10 kΩ to 40 kΩ.
7. The pull-down on this signal (in Intel High Definition Audio mode) is only enabled when in S3_COLD.
8. Simulation data shows that these resistor values can range from 5.7 kΩ to 28.3 kΩ.
9. The pull-up or pull-down on this signal is only enabled at boot/reset for strapping function.
10.Simulation data shows that these resistor values can range from 15 kΩ to 35 kΩ.
11.The pull-down on this signal is only enabled when LAN_RST# is asserted.
12.The internal pull-up is enabled only when the PCIRST# pin is driven low and the PWROK indication is high.
13.Simulation data shows that these resistor values can range from 15 kΩ to 30 kΩ.
14.Simulation data shows that these resistor values can range from 45 kΩ to 170 kΩ.
15.Simulation data shows that these resistor values can range from 10 kΩ to 20 kΩ. The internal pull-up is only
enabled only during PLTRST# assertion.
16. Simulation data shows that these resistor values can range from 10 kΩ to 30 kΩ.
17.Simulation data shows that these resistor values can range from 14.25 kΩ to 24.8 kΩ
3.2
IDE Integrated Series Termination Resistors
Table 3-2 shows the ICH6 IDE signals that have integrated series termination resistors.
Table 3-2. IDE Series Termination Resistors
Signal
DD[15:0], DIOW#, DIOR#, DREQ,
DDACK#, IORDY, DA[2:0], DCS1#,
DCS3#, IDEIRQ
Integrated Series Termination Resistor Value
approximately 33 Ω (See Note)
NOTE: Simulation data indicates that the integrated series termination resistors are a nominal 33 Ω but can
range from 21 Ω to 75 Ω.
3.3
Output and I/O Signals Planes and States
Table 3-3 and Table 3-4 shows the power plane associated with the output and I/O signals, as well
as the state at various times. Within the table, the following terms are used:
“High-Z”
Tri-state. ICH6 not driving the signal high or low.
“High”
ICH6 is driving the signal to a logic 1
“Low”
ICH6 is driving the signal to a logic 0
“Defined”
Driven to a level that is defined by the function (will be high or low)
“Undefined”
ICH6 is driving the signal, but the value is indeterminate.
“Running”
Clock is toggling or signal is transitioning because function not stopping
“Off”
The power plane is off, so ICH6 is not driving
Note that the signal levels are the same in S4 and S5, except as noted.
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Intel^® I/O Controller Hub 6 (ICH6) Family Datasheet