82575EB Datasheet, PDF (16/62 Pages) Intel Corporation – Intel® 82575EB Gigabit Ethernet Controller Datasheet

Intel^® 82575EB Gigabit Ethernet Controller — Serializer/Deserializer Signals
Symbol
MDI0_P_2
MDI0_N_2
MDI1_P_2
MDI1_N_2
MDI0_P_3
MDI0_N_3
MDI1_P_3
MDI1_N_3
Type
A
A
Name and Function
Media Dependent Interface [2]
1000BASE-T: In MDI configuration, MDIp2/MDIn2 corresponds to BI_DC+/-, and in
MDI-X configuration, MDIp2/MDIn2 corresponds to BI_DD+/-.
100BASE-TX: Unused.
10BASE-T: Unused.
Media Dependent Interface [3]
1000BASE-T: In MDI configuration, MDIp3/MDIn3 corresponds to BI_DD+/-, and in
MDI-X configuration, MDIp3/MDIn3 corresponds to BI_DC+/-.
100BASE-TX: Unused.
10BASE-T: Unused.
3.11 Serializer/Deserializer Signals
Symbol
SRDSI_0_P
SRDSI_0_N
SRDSI_1_P
SRDSI_1_N
SRDSO_0_P
SRDSO_0_N
SRDSO_1_P
SRDSO_1_N
SRDS0_SIG_DET/
SRDS1_SIG_DET
SER_RCOMP
SFP0_I2C_CLK
SFP0_I2C_DATA
SFP1_I2C_CLK
SFP1_I2C_DATA
Type
AI
Name and Function
SERDES Receive Pairs A and B
These signals make the differential receive pair for the 1.25 GHz serial interface. For
serializer/deserializer operation, the inputs should be coupled to ECL voltage levels. If the
SERDES interface is not used, these pins should not be connected.
AO
SERDES Transmit Pairs A and B
These signals make the differential transmit pair for the 1.25 GHz serial interface. For
serializer/deserializer operation, the outputs drive the LVPECL voltage levels. If the SERDES
interface is not used, these pins should not be connected.
I
Signal Detects A and B
These pins indicate whether the SERDES signals (connected to the 1.25 GHz serial interface)
have been detected by the optical transceivers. If the SERDES interface is not used with
copper media, these can be left with no connection (NC). If the SERDES interface is not used
with fiber media, the SIG_DET inputs should be tied high to VCC.
A
SERDES Impedance Compensation. Connect the recommended resistor (1.4K from this
ball to ground.
O
Port 0 SFP I2C clock. Connects to Mod-Def1 input of SFP. Can also be used as MDC pin.
TS/
Port 0 SFP I2C data. Connects to Mod-Def2 pin of SFP. Can also be used as MDIO pin
OD
O
Port 1 SFP I2C clock. Connects to Mod-Def1 input of SFP. Can also be used as MDC pin.
TS/
Port 1 SFP I2C data. Connects to Mod-Def2 pin of SFP. Can also be used as MDIO pin
OD
3.12 Test Interface Signals
Note:
Pull-up resistors are needed on these signals as shown in the reference schematic.
JTCK
JTDI
Symbol
Type
I
I
Name and Function
JTAG Test Access Port Clock
JTAG Test Access Port Test Data In
Intel^® 82575EB Gigabit Ethernet Controller
Datasheet
16
317679-004
Revision: 2.11
January 2011