WG82574L S LBA9 Intel, WG82574L S LBA9 Datasheet - Page 485
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WG82574L S LBA9
Manufacturer Part Number
WG82574L S LBA9
Description
CONTROLLER, ENET, INTEL 82574L, 64PQFN
Manufacturer
Intel
Datasheet
1.WG82574IT_S_LBAC.pdf
(490 pages)
Specifications of WG82574L S LBA9
Ethernet Type
IEEE 802.3, IEEE 802.3u, IEEE 802.3ab
Supply Voltage Range
3V To 3.6V
Operating Temperature Range
0°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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Board Layout and Schematic Checklists—82574 GbE Controller
Integrated Power
Supply
(Option A and B)
Section
Provide a 3.3 V dc supply. Use an auxiliary
power supply.
Connect external PNP transistor's base to
CTRL19 and the emitter to the 3.3 V dc
supply. The collector supplies 1.9 V dc. The
connections and transistor parameters are
critical.
Connect external PNP transistor's base to
CTRL10 and the emitter to the 3.3 V dc
supply. The collector supplies 1.05 V dc. The
connections and transistor parameters are
critical. For option B only.
Connect a 5 K resistor from CTRL19 to the
3.3 V dc supply.
Connect a 5 K resistor from CTRL10 to the
3.3 V dc supply. For option B only.
For option A: Connect DIS_REG10 to ground.
For option B: Connect DIS_REG10 to the
3.3 V dc supply.
Ensure that there is at least 10 F of
capacitance at the emitters of the PNPs.
The 3.3 V dc rail should have at least 25 F of
capacitance.
The 1.05 V dc and 1.9 V dc rails should have
20-40 F of capacitance.
Place these to minimize the inductance from
each power pin to the nearest decoupling
capacitor.
Check Items
Auxiliary power is necessary to support wake up from
power down states.
Enable internal 1.05 V dc regulator if it is used.
Place decoupling and bulk capacitors close to 82574,
with some along every side, using short, wide traces
and large vias. If power is distributed on traces, bulk
capacitors should be used at both ends. If power is
distributed on cards, bulk capacitors should be used at
the connector.
Remarks
485
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