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LAN8808D Datasheet(PDF) 49 Page - Microchip Technology

Part # LAN8808D
Description  4-Port Gigabit Ethernet Transceiver with QSGMII Support
PDF  80 Pages
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Manufacturer  MICROCHIP [Microchip Technology]
Direct Link  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

LAN8808D Datasheet(HTML) 49 Page - Microchip Technology

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LAN8808D
© 2026 Microchip Technology Inc. and its subsidiaries
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
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
Active
10 Mbps link, no activity
Blinking
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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