SC2200 NSC [National Semiconductor], SC2200 Datasheet - Page 380

• Manufacturer Part Number: SC2200
• Description: Thin Client On a Chip
• Manufacturer: NSC [National Semiconductor]

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Electrical Specifications
1.
2.
3.
4.
Symbol
t
t
t
CYC
HIGH
LOW
PCICLK
PCIRST
Clock frequency is between nominal DC and 33 MHz. Device operational parameters at frequencies under 16 MHz are
not 100% tested. The clock can only be stopped in a low state.
Guaranteed by characterization.
Slew rate must be met across the minimum peak-to-peak portion of the clock waveform (see Figure 8-14).
The minimum PCIRST# slew rate applies only to the rising (deassertion) edge of the reset signal. See Figure 8-18
for PCIRST# timing.
V
V
V
0.9
0.3
IO
IO
IO
Output Voltage
I
OH
Volts
sr
sr
= (98.0/V
-0.5
Drive Point
Drive Point
for V
DC
AC
Parameter
PCICLK Cycle time
PCICLK High time
PCICLK Low time
PCICLK Slew Rate
PCIRST# Slew Rate
IO
IO
Pull-Up
)*(V
Equation A
>V
OUT
OUT
-12V
>0.7V
-V
IO
Figure 8-13. V/I Curves for PCI Output Signals
IO
)*(V
(Continued)
IO
2
2
OUT
3
1
4
Table 8-18. PCI Clock Parameters
+0.4V
-48V
Test Point
IO
IO
)
I
OH
mA
V
380
V
Output Voltage
IO
0.6
0.1
IO
Volts
Min
1.5
30
11
11
50
1
Drive Point
Drive Point
DC
I
OL
AC
= (256/V
for 0V<V
Max
4
Equation B
-
IO
16V
)*V
Pull-Down
0.5V
IO
OUT
OUT
mV/ns
<0.18V
*(V
IO
V/ns
Unit
ns
ns
ns
IO
-V
64V
IO
OUT
IO
Test Point
)
Comments
I
OL
mA
Revision 3.0