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82559 — Networking Silicon
10
Datasheet
FLA[14]/
EEDO
IN/OUT
Flash Address[14]/EEPROM Data Output.
During Flash accesses,
this multiplexed pin acts as the Flash Address [14] output signal.
During EEPROM accesses, it acts as serial input data to the EEPROM
Data Output signal.
FLA[13]/
EEDI
OUT
Flash Address[13]/EEPROM Data Input.
During Flash accesses,
this multiplexed pin acts as the Flash Address [13] output signal.
During EEPROM accesses, it acts as serial output data to the
EEPROM Data Input signal.
FLA[12]/
MCNTSM#
OUT
O/D
Flash Address[12]/Modem Central Site Mode.
This multiplexed pin
acts as the Flash Address[12] output signal in a non-modem card. If
modem is enabled, it is used as an output signal to the modem. It is
either floated by default or driven low by the Modem System Control
Registers.
FLA[11]/
MINT
IN/OUT
Flash Address[11]/Modem Interrupt.
This multiplexed pin acts as
the Flash Address[11] output signal in a non-modem card. If modem is
enabled, it is used as the Modem Interrupt input signal.
FLA[10]/
MRING#
IN/OUT
Flash Address[10]/Modem Ring.
This multiplexed pin acts as the
Flash Address[10] output signal in a non-modem card. If modem is
enabled, it is used as the Modem Ring input signal.
FLA[9]/
MRST
OUT
Flash Address[9]/Modem Reset.
This multiplexed pin acts as the
Flash Address[9] output signal in a non-modem card. If modem is
enabled, it acts as the Modem Reset signal with an active high output.
FLA[8]/
IOCHRDY
IN/OUT
Flash Address[8]/ISA Input/Output Channel Ready.
This
multiplexed pin acts as the Flash Address[8] output signal in a non-
modem card. If modem is enabled, it is used as the ISA IOCHRDY
input signal.
FLA[7]/
CLKEN
T/S
Flash Address[7]/Clock Enable.
This is a multiplexed pin and acts
as the Flash Address[7] output signal during nominal operation. When
the PCI RST# signal is active, this pin acts as input control over the
FLA[16]/CLK25 output signal. If the FLA[7]/CLKEN pin is connected to
a pull-up resistor (3.3 K
), a 25 MHz clock signal is provided on the
FLA[16]/CLK25 output; otherwise, it is used as FLA[16] output.
FLA[6:2]
OUT
Flash Address[6:2].
These pins are used as Flash address outputs
to support 128 Kbyte Flash addressing. If the modem is enabled,
these pins carry modem address bits 6:2.
FLA[1]/
AUXPWR
T/S
Flash Address[1]/Auxiliary Power.
This multiplexed pin acts as the
Flash Address[1] output signal during nominal operation. If the modem
is enabled, this pin carries modem address bit 1. When RST is active
(low), it acts as the power supply indicator. If the 82559 is fed PCI
power, this pin should be connected to a pull-down resistor; if the
82559 is fed by auxiliary power, this pin should be connected to a pull-
up resistor.
FLA[0]/
PCIMODE#
T/S
Flash Address [0]/PCI Mode.
This multiplexed pin acts as the Flash
Address[0] output signal during nominal operation. If the modem is
enabled, this pin carries modem address bit 0. When RST# is active
(low), it acts as the input system type. If the 82559 is used in a
CardBus system, this pin should be connected to a pull-up resistor
(3.3 K
); otherwise, the 82559 considers the host as a PCI system.
EECS
OUT
EEPROM Chip Select.
The EEPROM Chip Select signal is used to
assert chip select to the serial EEPROM.
FLCS#/AEN
OUT
Flash Chip Select/Address Enable.
The Flash Chip Select signal is
active during Flash. In modem mode, it acts as an ISA-like Address
Enable signal (modem chip select).
Symbol
Type
Name and Function