Networking Silicon — 82540EP
Datasheet
13
3.4
Miscellaneous Signals
3.4.1
LED Signals
3.4.2
Other Signals
FL_CE#
O
FLASH Chip Enable Output.
Used to enable FLASH device.
FL_SCK
O
FLASH Serial Clock Output
.
The clock rate of the serial FLASH interface is
approximately 1 MHz.
FL_SI
O
FLASH Serial Data Input.
This pin is an output to the memory device.
FL_SO
I
FLASH Serial Data Output.
This pin is an input from the FLASH memory. It has an
internal pullup device.
Symbol
Type
Name and Function
Symbol
Type
Name and Function
LED0 / LINK#
O
LED0 / LINK Up.
Programmable LED indication. Defaults to indicate link
connectivity.
LED1 / ACT#
O
LED1 / Activity.
Programmable LED indication. Defaults to flash to indicate
transmit or receive activity.
LED2 / LINK100#
O
LED2 / LINK 100.
Programmable LED indication. Defaults to indicate link at
100 Mbps.
LED3 / LINK1000#
O
LED3 / LINK 1000.
Programmable LED indication. Defaults to indicate link at
1000 Mbps.
Symbol
Type
Name and Function
SDP[7:6]
SDP[1:0]
TS
Software Defined Pin.
The Software Defined Pins are reserved and programmable
with respect to input and output capability. These default to input signals upon power-up
but may be configured differently by the EEPROM. The upper four bits may be mapped
to the General Purpose Interrupt bits if they are configured as input signals.
Note: SDP5 is not included in the group of Software Defined Pins.
