LAN89730 datasheet(13/218 Pages) MICROCHIP

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DS60001348A-page 13

LAN89730

Carrier Sense

(Internal PHY

Mode)

CRS

IS/O8

(PU)

In Internal PHY Mode, this pin can be configured

to display the respective internal MII signal. Refer

to the Internal MII Visibility Enable (IME) bit of the

Hardware Configuration Register (HW_CFG) on

page 123 for additional information.

Carrier Sense

(External

PHY Mode)

CRS

(PD)

In External PHY Mode, the signal on this pin is

input from the external PHY and indicates a net-

work carrier.

General Pur-

pose I/O 3

(Internal PHY

Mode Only)

GPIO3

IS/O8/

OD8

(PU)

This General Purpose I/O pin is fully programma-

ble as either a push-pull output, an open-drain

output or a Schmitt-triggered input.

MII Collision

Detect

(Internal PHY

Mode)

COL

IS/O8

(PU)

In Internal PHY Mode, this pin can be configured

to display the respective internal MII signal. Refer

to the Internal MII Visibility Enable (IME) bit of the

Hardware Configuration Register (HW_CFG) on

page 123 for additional information.

MII Collision

Detect

(External

PHY Mode)

COL

(PD)

In External PHY Mode, the signal on this pin is

input from the external PHY and indicates a colli-

sion event.

General Pur-

pose I/O 0

(Internal PHY

Mode Only)

GPIO0

IS/O8/

OD8

(PU)

This General Purpose I/O pin is fully programma-

ble as either a push-pull output, an open-drain

output or a Schmitt-triggered input.

Note:

This pin may be used to signal PME

when Internal PHY and PME Modes of

operation are in effect. Refer to Chapter

5.0, "PME Operation" for additional

information.

Management

Data

(Internal PHY

Mode)

MDIO

IS/O8

(PU)

In Internal PHY Mode, this pin can be configured

to display the respective internal MII signal. Refer

to the Internal MII Visibility Enable (IME) bit of the

Hardware Configuration Register (HW_CFG) on

page 123 for additional information.

Management

Data

(External

PHY Mode)

MDIO

IS/O8

(PD)

In External PHY Mode, this pin provides the man-

agement data to/from the external PHY.

General Pur-

pose I/O 1

(Internal PHY

Mode Only)

GPIO1

IS/O8/

OD8

(PU)

This General Purpose I/O pin is fully programma-

ble as either a push-pull output, an open-drain

output or a Schmitt-triggered input.

Note:

This pin may serve as the

PME_MODE_SEL input when Internal

PHY and PME Modes of operation are

in effect. Refer to Chapter 5.0, "PME

Operation" for additional information.

TABLE 2-1:

MII INTERFACE PINS (CONTINUED)

Num Pins

Name

Symbol

Buffer

Type

Description

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