82544EI Datasheet, PDF (17/52 Pages) Intel Corporation – Gigabit Ethernet Controller

82544EI Gigabit Ethernet Controller Networking Silicon Datasheet
3.4
3.5
3.5.1
3.5.2
EEPROM/FLASH Interface Signals
Signal Name
EE_DI
EE_DO
EE_CS
EE_SK
FL_ADDR[18:0]
FL_CS#
FL_OE#
FL_WE#
FL_DATA[7:0]
Type
O
I
O
O
O
O
O
O
TS
Name and Function
EEPROM DI. This pin is an output to the memory device.
EEPROM DO. This pin is an input from the memory device. Internal
pullup resistor provided.
EEPROM CSO. Used to enable the device.
EEPROM Serial Clock. The clock rate of the EEPROM interface is
approximately 1 MHz.
FLASH Address Outputs. Used to FLASH or Boot ROM
FLASH Chip Select. Used to enable FLASH or Boot ROM
FLASH Output Enable. Used to enable buffers in FLASH.
FLASH Write Enable Output. Used for write cycles.
FLASH Data I/O. Bi-directional data bus for FLASH data. These
signals have internal pullup devices.
Miscellaneous Signals
LED Signals
Signal Name
LINK_UP#
RX_ACTIVITY#
TX_ACTIVITY#
LINK10#
LINK100#
LINK1000#
Type
O
OD
OD
OD
OD
OD
Name and Function
Link Up. LINK_UP# indicates link connectivity
Receive Activity. Flashes an LED to indicate link receive activity.
This output uses an open drain cell to allow a wired-OR of activity
signals.
Transmit Activity. Flashes an LED to indicate link transmit activity.
This output uses an open drain cell to allow a wired-OR of activity
signals.
Link 10. Drives an LED to indicate link at 10 Mbps. This output uses
an open drain cell.
Link 100. Drives an LED to indicate link at 100 Mbps. This output
uses an open drain cell.
Link 1000. Drives an LED to indicate link at 1000 Mbps. This output
uses an open drain cell.
Other Signals
Signal Name
LOS
XOFF
XON
Type
I
I
I
Name and Function
Loss of Signal. Loss of signal from the optical transceiver when
TBI_MODE=1
External XOFF. This is an external indication of the Above High
Threshold for flow control.
External XON. This provides an external indication of Below Low
Threshold for flow control.
Datasheet
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