LAN9514 datasheet(8/54 Pages) MICROCHIP

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LAN9514/LAN9514I

DS00002306A-page 8

 2009-2016 Microchip Technology Inc.

TABLE 2-3:

MISCELLANEOUS PINS

Num

PINs

Name

Symbol

Buffer

Type

Description

System Reset

nRESET

This active low pin allows external hardware to

reset the device.

Note:

This pin should be tied high if it is not

used.

Ethernet

Full-Duplex Indi-

cator LED

nFDX_LED

OD12

(PU)

This pin is driven low (LED on) when the Ethernet

link is operating in full-duplex mode.

General Pur-

pose I/O 0

GPIO0

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.

Ethernet Link

Activity Indica-

tor 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

80 mS whenever transmit or receive activity is

detected. This pin is then driven low again for a

minimum of 80 mS, 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 Pur-

pose I/O 1

GPIO1

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.

Ethernet Speed

Indicator LED

nSPD_LED

OD12

(PU)

This pin is driven low (LED on) when the Ethernet

operating speed is 100 Mbs, or during auto-

negotiation. This pin is driven high during 10Mbs

operation, or during line isolation.

General Pur-

pose I/O 2

GPIO2

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.

General Pur-

pose I/O 3

GPIO3

IS/O8/

OD8

(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.

General Pur-

pose I/O 4

GPIO4

IS/O8/

OD8

(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.

General Pur-

pose I/O 5

GPIO5

IS/O8/

OD8

(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.

General Pur-

pose I/O 6

GPIO6

IS/O8/

OD8

(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.

General Pur-

pose I/O 7

GPIO7

IS/O8/

OD8

(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.

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