Data Sheet

Ethernet Controller I210 —Pin Interface
26
2.3.5 LEDs
Table 2-6 lists the functionality of each LED output pin. The default activity of each LED can be modified
in the Flash. The LED functionality is reflected and can be further modified in the configuration registers
(LEDCTL).
2.3.6 PHY Pins
Note: The I210 has built in termination resistors. As a result, external termination resistors should
not be used.
Table 2-6. LEDs
Symbol Reserved Lead # Type
Op
Mode
Name and Function
LED0 31 Out Output Programmable LED number 0.
LED1 30 Out Output Programmable LED number 1.
LED2 33 Out Output Programmable LED number 2.
Table 2-7. PHY Pins
Symbol Lead # Type
Op
Mode
Name and Function
MDI_PLUS[0]/NC 58 A Bi-dir
In BASE-T:
Media Dependent Interface[0]:
1000BASE-T:
In MDI configuration, MDI[0]+ corresponds to BI_DA+ and in MDI-X
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 MDI-X
configuration MDI[0]+ is used for the receive pair.
MDI_MINUS[0]/
SFP_I2C_DATA
57 A Bi-dir
In BASE-T:
Media Dependent Interface[0]:
1000BASE-T:
In MDI configuration, MDI[0]- corresponds to BI_DA- and in MDI-X
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 MDI-X
configuration MDI[0]- is used for the receive pair.
In SerDes:
SFP 2 wire interface data – connects to Mod-Def2 pin of SFP (O/D). Can also be
used as MDIO pin (T/S).