82546EB Datasheet, PDF (21/47 Pages) Intel Corporation – Dual Port Gigabit Ethernet Controller

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3.8
Networking Silicon — 82546EB
Symbol Type
Name and Function
MDIB[1]+/- A
MDIB[2]+/- A
MDIB[3]+/- A
Media Dependent Interface B [1].
1000BASE-T: In MDI configuration, MDIB[1]+/- corresponds to BI_DB+/-, and in MDI-X
configuration, MDIB[1]+/- corresponds to BI_DA+/-.
100BASE-TX: In MDI configuration, MDIB[1]+/- is used for the receive pair, and in MDI-X
configuration, MDIB[1]+/- is used for the transit pair.
10BASE-T: In MDI configuration, MDIB[1]+/- is used for the receive pair, and in MDI-X
configuration, MDIB[1]+/- is used for the transit pair.
Media Dependent Interface B [2].
1000BASE-T: In MDI configuration, MDIB[2]+/- corresponds to BI_DC+/-, and in MDI-X
configuration, MDIB[2]+/- corresponds to BI_DD+/-.
100BASE-TX: Unused.
10BASE-T: Unused.
Media Dependent Interface B [3].
1000BASE-T: In MDI configuration, MDIB[3]+/- corresponds to BI_DD+/-, and in MDI-X
configuration, MDIB[3]+/- corresponds to BI_DC+/-.
100BASE-TX: Unused.
10BASE-T: Unused.
Serializer / Deserializer Signals
Symbol
RXA+/-
RXB +/-
TXA+/-
TXB +/-
SIG_
DETECT
(A and B)
Type
Name and Function
SERDES Receive Pairs A and B. These signals make the differential receive pair for
I
the 1.25 GHz serial interface. If the SERDES interface is not used, these pins should
not be connected.
SERDES Transmit Pairs A and B. These signals make the differential transmit pair for
O
the 1.25 GHz serial interface. If the SERDES interface is not used, these pins should
not be connected.
Signal Detects A and B. These pins indicate whether the SERDES signals
I
(connected to the 1.25 GHz serial interface) have been detected by the optical
transceivers. If the SERDES interface is not used, the SIG_DETECT inputs should be
connected to ground using pull-down resistors.
JTAG Test Interface Signals
Symbol Type
JTAG_TCK I
JTAG_TDI I
JTAG_TDO O
JTAG_TMS I
JTAG Clock.
JTAG TDI.
JTAG TDO.
JTAG TMS.
Name and Function
Datasheet
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