Data Sheet

Ethernet Controller I210 — Programming Interface

490

8.18.15 XON Received Count - XONRXC (0x4048; RC)

This register counts the number of valid XON packets received. XON packets can use the global

address, or the station address. This register only increments if receives are enabled (RCTL.RXEN is

set).

8.18.16 XON Transmitted Count - XONTXC (0x404C; RC)

This register counts the number of XON packets transmitted. These can be either due to a full queue or

due to software initiated action (using TCTL.SWXOFF). This register only increments if transmits are

enabled (TCTL.EN is set).

8.18.17 XOFF Received Count - XOFFRXC (0x4050; RC)

This register counts the number of valid XOFF packets received. XOFF packets can use the global

address or the station address. This register only increments if receives are enabled (RCTL.RXEN is

set).

8.18.18 XOFF Transmitted Count - XOFFTXC (0x4054; RC)

This register counts the number of XOFF packets transmitted. These can be either due to a full queue or

due to software initiated action (using TCTL.SWXOFF). This register only increments if transmits are

enabled (TCTL.EN is set).

8.18.19 FC Received Unsupported Count - FCRUC (0x4058; RC)

This register counts the number of unsupported flow control frames that are received.