82802AB Datasheet, PDF (37/53 Pages) Intel Corporation – Firmware Hub (FWH)

Intel^® 82802AB/AC Firmware Hub
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5.2.3. Intel FWH Interface AC Timing Specifications
5.2.3.1. Clock Specification
Table 11. Clock Specification
Symbol
Parameter
tcyc
thigh
tlow
-
-
CLK cycle time
CLK high time
CLK low time
CLK slew rate
RST# or INIT# slew rate
Condition
Peak-to-peak
Min.
30
11
11
1
50
Max. Units
∞
ns
ns
ns
4
V/ns
mV/ns
Notes
1
2
Note:
1. PCI components must work with any clock frequency between nominal DC and 33 MHz.
Frequencies less than 16 MHz may be guaranteed by design rather than testing. Refer to the PCI
specificaiton.
2. Applies only to the rising edge of the signal. See Chapter 4 of the PCI electrical specification.
Figure 7. Clock Waveform
0.5 Vcc
0.4 Vcc
0.3 Vcc
T_high
0.6 Vcc
T_cyc
T_low
0.2 Vcc
0.4 Vcc, p-to-p
(minimum)
Datasheet
37