LU82551ITQ810 Intel, LU82551ITQ810 Datasheet - Page 87

• Manufacturer Part Number: LU82551ITQ810
• Manufacturer: Intel

Specifications of LU82551ITQ810

• Operating Supply Voltage (typ): 3.3V
• Operating Supply Voltage (min): 3V
• Operating Supply Voltage (max): 3.6V
• Operating Temperature Classification: Industrial
• Mounting: Surface Mount
• Pin Count: 196
• Lead Free Status / Rohs Status: Compliant

11.4
11.4.1
11.4.1.1
11.4.1.2
Datasheet
Figure 20. PCI Clock Waveform
Table 55. PCI Clock Specifications
Table 56. X1 Clock Specifications
Timing Specifications
Clocks Specifications
PCI Clock Specifications
The 82551IT uses the PCI Clock signal directly.
measurement points for the PCI Clock signal.
NOTES:
X1 Specifications
X1 serves as a signal input from an external crystal or oscillator.
requirements from this signal.
1. The 82551IT will work with any PCI clock frequency up to 33 MHz.
2. Rise and fall times are specified in terms of the edge rate measured in V/ns. This slew rate is met across the
T1
T2
T3
T4
T8
T9
minimum peak-to-peak portion of the clock waveform as shown in
0.325V
T
T
T
T
Tx1_dc
Tx1_pr
cyc
slew
high
low
0.4V
0.475V
Symbol
Symbol
CC
CC
CC
CLK Cycle Time
CLK High Time
CLK Low Time
CLK Slew Rate
X1 Duty Cycle
X1 Period
T_high
0.6V
Parameter
Parameter
CC
T_cyc
Table 55
40%
Min
Min
30
11
11
Figure 20
1
0.2V
T_low
CC
summarizes the PCI Clock specifications.
Typical
Max
40
4
shows the clock waveform and required
Figure
Networking Silicon — 82551IT
Table 56
Units
V/ns
Max
60%
20.
ns
ns
ns
0.4V
(minimum)
defines the 82551IT
Notes
CC
Units
ns
1
2
p-to-p
±30 ppm
Notes
81