LAN9118_05 SMSC [SMSC Corporation], LAN9118_05 Datasheet - Page 18
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LAN9118_05
Manufacturer Part Number
LAN9118_05
Description
High Performance Single-Chip 10/100 Non-PCI Ethernet Controller
Manufacturer
SMSC [SMSC Corporation]
Datasheet
1.LAN9118_05.pdf
(126 pages)
- Current page: 18 of 126
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Revision 1.1 (05-17-05)
PIN
NO.
100,99
,98
70
NAME
Activity Indicator),
Wakeup Indicator
General Purpose
nLED1 (Speed
nLED2 (Link &
nLED3 (Full-
Indicator
Indicator),
I/O data,
Duplex
).
Table 2.5 System and Power Signals (continued)
SYMBOL
GPIO[2:0]/
LED[3:1]
PME
DATASHEET
BUFFER
TYPE
O8/OD8
IS/O12/
OD12
18
High Performance Single-Chip 10/100 Non-PCI Ethernet Controller
NUM
PINS
1
3
DESCRIPTION
When programmed to do so, is
asserted when the LAN9118 detects
a wake event and is requesting the
system to wake up from the
associated sleep state. The polarity
and buffer type of this signal is
programmable.
Note:
General Purpose I/O data: These
three general-purpose signals are
fully programmable as either push-
pull output, open-drain output or input
by writing the GPIO_CFG
configuration register in the CSR’s.
They are also multiplexed as GP LED
connections.
GPIO signals are Schmitt-triggered
inputs. When configured as LED
outputs these signals are open-drain.
nLED1 (Speed Indicator). This
signal is driven low when the
operating speed is 100Mbs, during
auto-negotiation and when the cable
is disconnected. This signal is driven
high only during 10Mbs operation.
nLED2 (Link & Activity Indicator).
This signal is driven low (LED on)
when the LAN9118 detects a valid
link. This signal is pulsed high (LED
off) for 80mS whenever transmit or
receive activity is detected. This
signal is then driven low again for a
minimum of 80mS, after which time it
will repeat the process if TX or RX
activity is detected. Effectively, LED2
is activated solid for a link. When
transmit or receive activity is sensed
LED2 will flash as an activity
indicator.
nLED3 (Full-Duplex Indicator). This
signal is driven low when the link is
operating in full-duplex mode.
Detection of a Power
Management Event, and
assertion of the PME signal
will not wakeup the
LAN9118. The LAN9118 will
only wake up when it
detects a host write cycle
(assertion of nCS and
nWR). Although any write to
the LAN9118, regardless of
the data written, will wake-
up the device when it is in a
power-saving mode, it is
required that the
BYTE_TEST register be
used for this purpose.
SMSC LAN9118
Datasheet
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