FW82801EB Intel, FW82801EB Datasheet - Page 71

• Manufacturer Part Number: FW82801EB
• Manufacturer: Intel

Specifications of FW82801EB

• Lead Free Status / RoHS Status: Not Compliant

3.3
3.4
Intel
®
Table 27. IDE Series Termination Resistors
82801EB ICH5 / 82801ER ICH5R Datasheet
IDE Integrated Series Termination Resistors
Table 27
NOTE: Simulation data indicates that the integrated series termination resistors are a nominal 33 Ω but can
Output and I/O Signals Planes and States
Table 28
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.
PDD[15:0], SDD[15:0], PDIOW#, SDIOW#,
PDIOR#, SDIOR#, PDREQ, SDREQ,
PDDACK#, SDDACK#, PIORDY, SIORDY,
PDA[2:0], SDA[2:0], PDCS1#, SDCS1#,
PDCS3#, SDCS3#, IRQ14, IRQ15
range from 21 Ω to 75 Ω.
shows the ICH5 IDE signals that have integrated series termination resistors.
shows the power plane associated with the output and I/O signals, as well as the state at
Signal
Tri-state. ICH5 not driving the signal high or low.
ICH5 is driving the signal to a logic 1
ICH5 is driving the signal to a logic 0
Driven to a level that is defined by the function (will be high or low)
ICH5 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 ICH5 is not driving
Integrated Series Termination Resistor Value
Intel
approximately 33 Ω (See Note)
®
ICH5 Power Planes and Pin States
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