Ide Series Termination Resistors - Intel 6300ESB Datasheet

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4—Intel 6300ESB ICH
Table 26. Integrated Pull-Up and Pull-Down Resistors
NOTES:
1. Simulation data shows that these resistor values may range from 10 KΩ to 40 KΩ.
2. Simulation data shows that these resistor values may range from 9 KΩ to 50 KΩ.
3. Simulation data shows that these resistor values may range from 15 KΩ to 35 KΩ
4. Simulation data shows that these resistor values may range from 7.5 KΩ to 16 KΩ.
5. Simulation data shows that these resistor values may range from 45 KΩ to 170 KΩ
6. Simulation data shows that these resistor values may range from 5.7 KΩ to 28.3 KΩ.
7. Simulation data shows that these resistor values may range from 14.25 KΩ to 24.8 KΩ
8. The pull-up or pull-down on this signal is only enabled at boot/reset for strapping
function.
4.3 IDE Integrated Series Termination
Resistors
Table 27
termination resistors.
Table 27.

IDE Series Termination Resistors

PDD[15:0], SDD[15:0], PDIOW#,
SDIOW#, PDIOR#, PDIOW#, PDREQ,
SDREQ, PDDACK#, SDDACK#,
PIORDY, SIORDY, PDA[2:0],
SDA[2:0], PDCS1#, SDCS1#,
PDCS3#, SDCS3#, IRQ14, IRQ15]
NOTE: Simulation data indicates that the integrated series termination resistors are a nominal
33 Ω but may range from 31 Ω to 43 Ω.
4.4 Output and I/O Signals Planes and States
Table 28
signals, as well as the state at various times. Within the table, the following terms are
used:
"High-Z"
"High"
"Low"
"Defined"
"Undefined"
"Running"
November 2007
Order Number: 300641-004US
Signal
PDDREQ / SDDREQ
SPKR
USB[3:0] [P,N]
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shows the Intel 6300ESB ICH IDE signals that have integrated series
Signal
and Table 29 shows the power plane associated with the output and I/O
Tri-state. The Intel
signal high or low.
The Intel
The Intel
Driven to a level that is defined by the function (will be
high or low).
The Intel
value is indeterminate.
Clock is toggling or signal is transitioning because the
function is not stopping.
Resistor Type Nominal Value
pull-down
pull-down
pull-down
Integrated Series Termination Resistor Value
approximately 33 Ω (See Note)
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6300ESB ICH is not driving the
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6300ESB ICH is driving the signal to a logic '1'.
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6300ESB ICH is driving the signal to a logic '0'.
®
6300ESB ICH is driving the signal, but the
Notes
11.5K 6
20K 2, 8
15K 7
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Intel 6300ESB I/O Controller Hub
DS
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