AMD Geode SC2200 - Manual (Page 374)

392 AMD Geode™ SC2200 Processor Data Book
Electrical Specifications 32580B
Figure 9-13. V/I Curves for PCI Output Signals
Pull-Up Pull-Down
Test Point
V
IO
0.9
V
IO
DC
Drive Point
AC
Drive Point
0.3
V
IO
0.6
V
IO
0.1
AC
Drive Point
DC
Drive Point
Test Point
V
IO
Equation A
for V
IO
>V
OUT
>0.7V
IO
I
OL
= (256/V
IO
)*V
OUT
*(V
IO
-V
OUT
)
for 0V
OUT
<0.18V
IO
Volts Volts
I
OL
mA I
OH
mA
64V
IO
16V
IO
1.5 -12V
IO
-48V
IO -0.5
I
OH
= (98.0/V
IO
)*(V
OUT
-V
IO
)*(V
OUT
+0.4V
IO
)
Equation B
Output Voltage Output Voltage
0.5V
IO