USB 2.0 to 10/100 Ethernet Controller
Datasheet
Table 3.4 Miscellaneous Pins (continued)
BUFFER
NUM PINS
NAME
SYMBOL
TYPE
DESCRIPTION
Ethernet
Full-Duplex
Indicator LED
nFDX_LED
OD12
(PU)
This pin is driven low (LED on) when the Ethernet
link is operating in full-duplex mode.
General
Purpose I/O 8
GPIO8
IS/O12/
OD12
(PU)
This General Purpose I/O pin is fully
programmable as either a push-pull output, an
open-drain output, or a Schmitt-triggered input.
Note:
(LAN9500A/LAN9500Ai only)
1
This pin may be used to signal PME
when External PHY and PME modes of
operation are in effect. Refer to
Chapter 6, "PME Operation," on
page 41 for additional information.
Note:
By default this pin is configured as a
GPIO.
Ethernet Link
Activity
Indicator LED
nLNKA_LED
OD12
(PU)
This pin is driven low (LED on) when a valid link
is detected. This pin is pulsed high (LED off) for
80mS whenever transmit or receive activity is
detected. This pin 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 function as an activity indicator.
General
Purpose I/O 9
GPIO9
IS/O12/
OD12
(PU)
This General Purpose I/O pin is fully
programmable as either a push-pull output, an
open-drain output, or a Schmitt-triggered input.
1
Note:
(LAN9500A/LAN9500Ai only)
This pin may serve as the
PME_MODE_SEL input when External
PHY and PME modes of operation are
in effect. Refer to Chapter 6, "PME
Operation," on page 41 for additional
information.
Note:
By default this pin is configured as a
GPIO.
SMSC LAN950x Family
Revision 1.1 (04-18-13)
DATA1S9HEET
SMSC [ SMSC CORPORATION ]
