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LAN8804D Datasheet(PDF) 50 Page - Microchip Technology

Part # LAN8804D
Description  4-Port Gigabit Ethernet Transceiver with QSGMII Support
PDF  89 Pages
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Manufacturer  MICROCHIP [Microchip Technology]
Direct Link  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

LAN8804D Datasheet(HTML) 50 Page - Microchip Technology

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LAN8804D
DS00003591K-page 50
© 2026 Microchip Technology Inc. and its subsidiaries
5.17.1
INDIVIDUAL-LED MODE
In Individual-LED mode, the PORTxLED2 pin indicates the link status while the PORTxLED1 pin indicates the activity
status, as shown in Table 5-8.
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.
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.
• Coma mode is asserted via the COMA_MODE pin.
TABLE 5-8:
INDIVIDUAL-LED MODE OPERATION
PORTxLED2
PORTxLED1
Definition
Inactive
Inactive
No link
Active
Inactive
Link any speed, no activity
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.
• Coma mode is asserted via the COMA_MODE pin.
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



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