82544EI Datasheet, PDF (19/52 Pages) Intel Corporation – Gigabit Ethernet Controller

82544EI Gigabit Ethernet Controller Networking Silicon Datasheet
3.6
3.6.1
3.6.2
PHY Signals
Crystal Signals
Signal Name
XTAL1
XTAL2
Analog Signals
Signal Name
REF
MDI[0]+/-
MDI[1]+/-
MDI[2]+/-
MDI[3]+/-
Type
I
O
Type
P
A
A
A
A
Name and Function
XTAL1. 25MHz +/- 30 ppm input; can be connected to an
oscillator or a crystal. If a crystal is used, XTAL2 must be
connected as well.
XTAL2. Output of internal oscillator circuit used to drive crystal
into oscillation. If an external oscillator is used, XTAL2 must be
disconnected.
Name and Function
Reference. External 2.49 KΩ resistor connection to VSS.
Media Dependent Interface[0].
1000BASE-T:
In MDI configuration, MDI[0]+/- corresponds to
BI_DA+/- and in MDIX configuration MDI[0]+/-
corresponds to BI_DB+/-.
100BASE-TX: In MDI configuration, MDI[0]+/- is used for the
transmit pair and in MDIX configuration
MDI[0]+/- is used for the receive pair.
10BASE-T:
In MDI configuration, MDI[0]+/- is used for the
transmit pair and in MDIX configuration
MDI[0]+/- is used for the receive pair.
Media Dependent Interface[1].
1000BASE-T:
In MDI configuration, MDI[1]+/- corresponds to
BI_DB+/-, and in MDIX configuration, to the
BI_DA+/-.
100BASE-TX: In MDI configuration, MDI[1]+/- is used for the
receive pair, and in MDIX configuration,
the transmit pair.
10BASE-T:
In MDI configuration, MDI[1]+/- is used for the
receive pair, and in MDIX configuration,
the transmit pair.
Media Dependent Interface[2].
1000BASE-T:
In MDI configuration, MDI[2]+/- corresponds to
BI_DC+/-, and in MDIX configuration, to the
BI_DD+/-.
100BASE-TX: Unused.
10BASE-T:
Unused.
Media Dependent Interface[3].
1000BASE-T:
In MDI configuration, MDI[3]+/- corresponds to
BI_DD+/-, and in MDIX configuration, to the
BI_DC+/-.
100BASE-TX: Unused.
10BASE-T:
Unused.
Datasheet
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