LAN8810I-AKZE Datasheet, PDF (34/100 Pages) Microchip Technology – GMII 10/100/1000 Ethernet Transceiver with HP Auto-MDIX Support

GMII 10/100/1000 Ethernet Transceiver with HP Auto-MDIX Support
Datasheet
3.9 Miscellaneous Functions
3.9.1 LEDs
The device provides the following LED signals to enable visual indication of status:
 1000_LED
 100_LED
 10_LED
 ACT_LED
In all modes, the Full Duplex LED (ACT_LED) is driven immediately after auto-negotiation has resolved
the duplex state and before the link is established. The Speed LEDs (1000_LED, 100_LED, 10_LED)
are driven after a link is established. Three LED modes of operation are available:
 LED Mode 1 (Table 3.12)
 LED Mode 2 (Table 3.13)
 LED Mode 3 (Default Mode - Table 3.14)
The LED mode is configured via the LED_MODE[1:0] field of the Extended Mode Control/Status
Register. The functional operation of the LEDs in each mode is described in Table 3.12, Table 3.13
and Table 3.14.
Note: LED Mode 3 is the default mode of operation and requires four LEDs for full operation.
Note: LED Modes 1 and 2 require two dual LED packages (two LEDs in each package). LED Mode
2 provides collision detection, while LED Mode 1 does not.
Table 3.12 LED Mode 1 Operation - LED_MODE[1:0]=01b
LED
100_LED
1000_LED
100_LED &
1000_LED
10_LED
ACT_LED
10_LED & ACT_
LED
STATUS
On Color1
On Color2
On Color3
On Color1
Note 3.4
On Color2
Off
On Color1
Off/Color2
Color1/Color2
DESCRIPTION
100BASE-T link
1000BASE-T link
10BASE-T link
Link operates at full duplex
Transmit/receive activity
Half duplex, no activity
Full duplex, no activity
Half duplex, transmit/receive activity
Full duplex, transmit/receive activity
Note 3.4 Activity will cause duplex LED color to blink.
Revision 1.0 (02-06-13)
34
DATASHEET
SMSC LAN8810/LAN8810i