LAN8808D datasheet(49/80 Pages) MICROCHIP

49 / 80 page

LAN8808D

DS00005833C-page 49

5.17.2

TRI-COLOR-LED MODE

In Tri-color-LED mode, the link and activity status are indicated by the PORTxLED2 pin for 1000BASE-T; by the PORTx-

LED1 pin for 100BASE-TX; and by both PORTxLED2 and PORTxLED1 pins, working in conjunction, for 10BASE-T.

This is summarized in Table 5-9.

5.17.3

ENHANCED LED MODE

Enhanced mode is enabled when the KSZ9031 LED mode bit in the corresponding port’s LED Control Register 1 is

cleared. In Enhanced LED mode, each LED can be configured to display different status information that can be

selected by setting the corresponding LED Configuration field of the port’s LED Control Register 2. The modes are

detailed in Table 5-10. The blink/pulse-stretch and other LED setting can be configured via the LED Behavior register.

Active

Blinking

Link any speed, TX or RX activity

Other States

N/A

Note:

The LEDs are forced off when any of the following occurs:

• The Isolate (PHY_ISO) bit in the Basic Control register is set.

• The Power Down bit in the Basic Control register is set.

TABLE 5-9:

TRI-COLOR-LED MODE OPERATION

PORTxLED2

PORTxLED1

Definition

Inactive

No link

Inactive

Active

100 Mbps link, no activity

Inactive

Blinking

100 Mbps link, TX or RX activity

Active

Inactive

1000 Mbps link, no activity

Blinking

Inactive

1000 Mbps link, TX or RX activity

Active

10 Mbps link, no activity

Blinking

10 Mbps link, TX or RX activity

Other States

N/A

Note:

The LEDs are forced off when any of the following occurs:

• The Isolate (PHY_ISO) bit in the Basic Control register is set.

• The Power Down bit in the Basic Control register is set.

TABLE 5-8:

INDIVIDUAL-LED MODE OPERATION

PORTxLED2

PORTxLED1

Definition

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