LAN9500AI datasheet(19/213 Pages) MICROCHIP

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DS00001875A-page 19

LAN950x

Ethernet Speed

Indicator LED

nSPD_LED

OD12

(PU)

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

operating speed is 100Mbs, or during auto-

negotiation. This pin is driven high during 10Mbs

operation, or during line isolation.

General

Purpose I/O 10

GPIO10

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 1: (LAN9500A/LAN9500Ai ONLY):

This pin may serve as a wakeup pin

whose detection mode is selectable

when External PHY and PME modes of

operation

are

effect.

Refer

Section 6.0 “PME Operation” for addi-

tional information.

2: By default this pin is configured as a

GPIO.

Detect

Upstream

VBUS Power

VBUS_DET

IS_5V

(PD)

Detects state of upstream bus power.

For bus powered applications, this pin must be tied

to VDD33IO.

For self powered applications where the device is

permanently attached to a host, VBUS_DET

should be pulled to VDD33IO. For other self

powered applications, refer to the device reference

schematic for additional connection information.

Note:

(LAN9500A/LAN9500Ai ONLY):

This pin may be used to signal bus power

availability when PME mode of operation

is in effect. Refer to Section 6.0 “PME

Operation” for additional information.

Test 1

TEST1

This pin must always be connected to VDD33IO

for proper operation.

Test 2

TEST2

This pin must always be connected to VSS for

proper operation.

Test 3

TEST3

This pin must always be connected to VSS for

proper operation.

TABLE 3-4:

MISCELLANEOUS PINS (CONTINUED)

Num Pins

Name

Symbol

Buffer

Type

Description

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