8101 Datasheet, PDF (59/172 Pages) LSI Computer Systems – Gigabit Ethernet Controller

Transmit‚" Section 4.3.20, in order to be transmitted. The next pages
received from the remote station are stored in “Register 24–
AutoNegotiation Next Page Receive‚" Section 4.3.21. Both stations must
have the next page functionality for a successful next page transfer. Next
page operation is complicated; refer to IEEE 802.3z for a full description
of how this feature works and to Chapter 4, Registers for a description
of the associated registers.
There are status bits related to next page operation. See Section 2.15.2,
“Negotiation Status” for details.
2.15.2 Negotiation Status
There are bits in “Register 11–Status 1‚" Section 4.3.12, that indicate the
status of AutoNegotiation. These bits are summarized in Table 2.12 and
are described in more detail in the Status 1 register description. Some
of the bits related to AutoNegotiation can be programmed to cause an
interrupt, as described in the Status 1 register description.
Table 2.12 AutoNegotiation Status Bits
Register 11
Bit No.
Bit Name
11
LINK
7
AN_NP
6
AN_TX_NP
5
AN_RX_NP
4
AN_RX_BP
3
AN_RMTRST
What Bit Indicates
Link is up, autoNegotiation has completed
One TX and one RX next page has been
exchanged
One next page has been transmitted
One next page has been received
Base page has been received
AutoNegotiation was restarted by remote
station
2.15.3 AutoNegotiation Restart
Setting the ANRST bit in “Register 7–Configuration 1‚" Section 4.3.8,
restarts the AutoNegotiation algorithm. The ANRST bit clears itself
automatically after the AutoNegotiation process starts transmitting /C/
ordered sets.
AutoNegotiation
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