82575EB Datasheet, PDF (15/62 Pages) Intel Corporation – Intel® 82575EB Gigabit Ethernet Controller Datasheet

Other Signals — Intel^® 82575EB Gigabit Ethernet Controller
3.8 Other Signals
Symbol
SDP0_0
SDP0_1
SDP0_2
SDP0_3
SDP1_0
SDP1_1
SDP1_2
SDP1_3
Type
TS
Name and Function
Software Defined Pin (SDP)
The Software Defined Pins are programmable with respect to input and output capability. These pins
also can optionally be configured as interrupt inputs. SDP signals default to inputs upon power-up, but
can be configured differently by the EEPROM.
3.9 Crystal Signals
Symbol
XTAL1
XTAL2
Type
AI
AO
Name and Function
Crystal One
The Crystal One pin is a 25 MHz input signal. It should be connected to a parallel resonant crystal with
a frequency tolerance of 30 ppm or better. The other end of the crystal should be connected to XTAL2.
Crystal Two
Crystal Two is the output of an internal oscillator circuit used to drive a crystal into oscillation.
3.10 PHY Analog Signals
Symbol
RBIAS0_P/RBIAS1_P
MDI0_P_0
MDI0_N_0
MDI1_P_0
MDI1_N_0
MDI0_P_1
MDI0_N_1
MDI1_P_1
MDI1_N_1
Type
A
A
A
Name and Function
Compensation Reference Resistor.
A 1.4 K, 1% tolerance resistor should be used. RBIAS_N should also be connected to
ground (VSS).
Media Dependent Interface [0]
1000BASE-T: In MDI configuration, these correspond to BI_DA+/-, and in MDI-X
configuration, MDIp0/MDIn0 corresponds to BI_DB+/-.
100BASE-TX: In MDI configuration, MDIp0/MDIn0 is used for the transmit pair, and
in MDI-X configuration, MDIp0/MDIn0 is used for the receive pair.
10BASE-T: In MDI configuration, MDIAp0/MDI_MINUS0_0 is used for the transmit
pair, and in MDI-X configuration, MDIp0/MDIn0 is used for the receive pair.
Media Dependent Interface [1]
1000BASE-T: In MDI configuration, MDIp1/MDIn1 corresponds to BI_DB+/-, and in
MDI-X configuration, MDIp1/MDIn1 corresponds to BI_DA+/-.
100BASE-TX: In MDI configuration, MDIp1/MDIn1 is used for the receive pair, and in
MDI-X configuration, MDIp1/MDIn1 is used for the transit pair.
10BASE-T: In MDI configuration, MDIp1/MDIn1 is used for the receive pair, and in
MDI-X configuration, MDIp1/MDIn1 is used for the transit pair.
317679-004
Revision: 2.11
January 2011
Intel^® 82575EB Gigabit Ethernet Controller
Datasheet
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