GD82559ER Datasheet, PDF (82/94 Pages) Intel Corporation – PCI Controller

GD82559ER — Networking Silicon
10.3
Rbias10
621.5 0hm
549 Ohm
576 Ohm
19mA
20 mA
21mA Icct10
Figure 25. RBIAS10 Resistance Versus Transmitter Current
AC Specifications
Table 21. AC Specifications for PCI Signaling
Symbol Parameter
Condition
Min
Max Units Notes
0 < V_out ≤ 1.4
-44
mA
1
Switching
I_OH(AC) ^{Current High}
1.4 < V_out < 0.9V_CC
-17.1(V_CC - V_out)
mA
1
0.7V_CC < V_out < V_CC
Eqn A mA
2
(Test Point)
V_out = 0.7V_CC
-32V_CC mA
2
I_OL(AC)
Switching
Current Low
V_out ≥ 2.2
2.2 > V_out > 0.1V_CC
0.18V_CC > V_out > 0
95
V_out/0.023
mA
1
mA
1
Eqn B mA
2
(Test Point)
V_out = 0.18V_CC
38V_CC mA
2
I_CL
Low Clamp
Current
-3 < V_in ≤ -1
-25 + (V_in + 1)/
0.015
mA
3
I_CH
High Clamp
Current
V_CC +4 > V_in ≥ V_CC +1
25 + (V_in-V_CC-1)/
0.015
mA
3
slew_RP
PCI Output Rise
Slew Rate
0.4 V to 2.4 V
1
4
V/ns
slew_FP
PCI Output Fall
Slew Rate
2.4 V to 0.4 V
1
4
V/ns
NOTES:
1. Switching Current High specifications are not relevant to PME#, SERR#, or INTA#, which are open drain
outputs.
2. Maximum current requirements will be met as drivers pull beyond the first step voltage (AC drive point).
Equations defining these maximums (A and B) are provided. To facilitate component testing, a maximum
current test point is defined for each side of the output driver.
Equation A.
Equation B.
I_OH = (98/V_CC)_*(V_out - V_CC)_*(V_out + 0.4V_CC), for V_CC > V_out > 0.7V_CC
I_OL = (256/V_CC)_*(V_out)_*(V_CC - V_out), for 0 < V_out < 0.18V_CC
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Datasheet