Data Sheet

Ethernet Controller I210 —Inline Functions
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The BLINK bits control whether the LED should be blinked (on for 200ms, then off for 200ms) while the
LED source is asserted. The blink control might be especially useful for ensuring that certain events,
such as ACTIVITY indication, cause LED transitions, which are sufficiently visible by a human eye.
Note: When LED Blink mode is enabled the appropriate LED Invert bit should be set to 0b.
The LINK/ACTIVITY source functions slightly different from the others when BLINK is enabled.
The LED is off if there is no LINK, on if there is LINK and no ACTIVITY, and blinking if there is
LINK and ACTIVITY.
The dynamic LED modes (FILTER_ACTIVITY, LINK/ACTIVITY, COLLISION, ACTIVITY, PAUSED) should
be used with LED Blink mode enabled.
7.5.1 MODE Encoding for LED Outputs
Table 7-58 lists the MODE encoding for LED outputs used to select the desired LED signal source for
each LED output.
7.6 Memory Error Correction and Detection
The I210 main internal memories are protected by error correcting code or parity bits. Large memories
or critical memories are protected by an error correcting code (ECC). Smaller memories are protected
either with an error correcting code (ECC for critical memories) or by parity.
Table 7-58. Mode Encoding for LED Outputs
Mode Selected Mode Source Indication
0000b LINK_10/1000
Asserted when either 10 or 1000 Mb/s link is established and
maintained.
0001b LINK_100/1000
Asserted when either 100 or 1000 Mb/s link is established and
maintained.
0010b LINK_UP Asserted when any speed link is established and maintained.
0011b FILTER_ACTIVITY
Asserted when link is established and packets are being transmitted
or received that passed MAC filtering.
0100b LINK/ACTIVITY
Asserted when link is established and when there is no transmit or
receive activity. When BLINK, indicates LINK and activity (eIther
receive or transmit)
0101b LINK_10 Asserted when a 10 Mb/s link is established and maintained.
0110b LINK_100 Asserted when a 100 Mb/s link is established and maintained.
0111b LINK_1000 Asserted when a 1000 Mb/s link is established and maintained.
1000b SDP_MODE
LED activation is a reflection of the SDP signal. SDP0, SDP1, SDP2
are reflected to LED0, LED1, LED2 respectively.
1001b FULL_DUPLEX
Asserted when the link is configured for full duplex operation (de-
asserted in half-duplex).
1010b COLLISION Asserted when a collision is observed.
1011b ACTIVITY
Asserted when link is established and packets are being transmitted
or received.
1100b LINK_10/100
Asserted when either 10 or 100 Mb/s link is established and
maintained.
1101b PAUSED Asserted when the I210’s transmitter is flow controlled.
1110b LED_ON Always high (Asserted)
1111b LED_OFF Always low (De-asserted)