AMD Geode SC1201 - Manual (Page 390)

390 AMD Geode™ SC1200/SC1201 Processor Data Book
Electrical Specifications 32579B
Figure 9-15. PCICLK Timing and Measurement Points
Table 9-21. PCI Clock Parameters
Symbol Parameter Min Max Unit Comments
t
CYC
PCICLK cycle time 30 ns Note 1
t
HIGH
PCICLK high time 11 ns Note 2
t
LOW
PCICLK low time 11 ns Note 2
PCICLK
sr
PCICLK slew Rate 1 4 V/ns Note 3
PCIRST
sr
PCIRST# slew Rate 50 - mV/ns Note 4
Note 1. 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.
Note 2. Guaranteed by characterization.
Note 3. Slew rate must be met across the minimum peak-to-peak portion of the clock waveform (see Figure 9-15).
Note 4. The minimum PCIRST# slew rate applies only to the rising (de-assertion) edge of the reset signal. See Figure 9-19
for PCIRST# timing.
t
HIGH
0.4 V
IO
, p-to-p
(minimum)
0.6V
IO
0.2V
IO
0.5 V
IO
0.4 V
IO
0.3 V
IO
t
CYC
t
LOW
PCICLK