WG82574IT S LBAC Intel, WG82574IT S LBAC Datasheet - Page 429
WG82574IT S LBAC
Manufacturer Part Number
WG82574IT S LBAC
Description
CONTROLLER, ENET, INTEL 82574IT, 64PQFN
Manufacturer
Intel
Datasheet
1.WG82574IT_S_LBAC.pdf
(490 pages)
Specifications of WG82574IT S LBAC
Ethernet Type
IEEE 802.3, IEEE 802.3u, IEEE 802.3ab
Supply Voltage Range
3V To 3.6V
Operating Temperature Range
-40°C To +85°C
Digital Ic Case Style
QFN
No. Of Pins
64
Package / Case
QFN
Interface Type
I2C, JTAG, PCI, SPI
Rohs Compliant
Yes
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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Electrical Specifications—82574 GbE Controller
12.9
Table 89.
Note:
Oscillator/Crystal Specifications
See
External Crystal Specifications
Intel does not recommend a significantly lower Cload capacitance then 18 pF due to
crystal trimming sensitivity (ppm/pF) versus Cload rating. Lower Cload crystals are
more likely to cause the LAN reference frequency to be out of specification (30 ppm).
Also, a ≥ 5x gain or ≥ 5x negative resistance is NOT necessary from Intel’s LAN
component’s crystal driver. A ≥ 5x gain or ≥ 5x negative resistance can cause crystal
overdrive and accelerate crystal aging (ppm/year). As a result, the crystal circuit might
shift off frequency more quickly than it would with lower driver levels and normal
aging.
Frequency
Vibration Mode
Frequency Tolerance @25 °C
Temperature Tolerance
Series Resistance (ESR)
Crystal Load Capacitance
Shunt Capacitance
Drive Level
Aging
Calibration Mode
Insulation Resistance
Figure 69
Parameter Name
for recommended crystal placement and layout instructions.
f
Df/f
Df/f
R
C
C
D
Df/f
o
s
load
o
L
Symbol
o
o
o
@25°C
25 [MHz]
Fundamental
±30 [ppm]
±30 [ppm]
18 [pF]
±5 ppm per year
Parallel
Recommended
Value
50 [] max
6 [pF] max
300 [W] max
±5 ppm per year max
500 [M] min
Max/Min Range
@25 [°C]
@25 [°C]
@25 [MHz]
@ 100 V dc
Conditions
429
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