LAN9500AI datasheet(19/66 Pages) SMSC

19 / 66 page

USB 2.0 to 10/100 Ethernet Controller

Datasheet

SMSC LAN950x Family

Revision 1.1 (04-18-13)

DATASHEET

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)

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.

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.

Table 3.4 Miscellaneous Pins (continued)

NUM PINS

NAME

SYMBOL

BUFFER

TYPE

DESCRIPTION

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