MC9S12NE64CPVE Datasheet, PDF (363/554 Pages) Freescale Semiconductor, Inc – MC9S12NE64 Device Overview

LPANA — Link Partner A/N Able
Indicates whether the link partner has A/N capabilities.
1 = Link partner is A/N able
0 = Link partner is not A/N able
Memory Map and Register Descriptions
12.3.3.9 Auto Negotiation Next Page Transmit
Figure 12-14 shows the contents of the A/N next page transmit register. The MI writes to this register if it
needs to exchange more information with the link partner. The PHY defaults to sending only a NULL
message page to the link partner unless the STA overrides the values in the register. Next pages will be
transmitted until the link partner has no more pages to transmit and bit 7.15 has been cleared by the STA.
MII Register Address 7 (%00111)
15 14 13 12 11 10 9
8
7
6
5
4
3
2
1
0
R
0
TGL
NXTP
MSGP ACK2
W
Message/Unformatted Code Field [10:0]
RESET: 0
0
1
0
0
0
0
0
0
0
0
0
0
0
0
1
= Unimplemented or Reserved
Figure 12-14. Auto Negotiation Next Page Transmit Register
Read: Anytime
Write: Never
NXTP — Next Page
1 = Additional next pages will follow
0 = Last page to transmit
MSGP — Message Page
1 = Message page
0 = Unformatted page
ACK2 — Acknowledge 2
ACK2 is used to indicate that the receiver is able to act on the information (or perform the task) defined
in the message.
1 = Receiver is able to perform the task defined in the message
0 = Receiver is unable to perform the task defined in the message
TGL — Toggle
1 = Previous value of the transmitted link code word equalled 0
0 = Previous value of the transmitted link code word equalled 1
Message/Unformatted Code Field
Message code field — Predefined code fields defined in IEEE 802.3u-1995 Annex 28C
Unformatted code field — Eleven bit field containing an arbitrary value
MC9S12NE64 Data Sheet, Rev. 1.1
Freescale Semiconductor
363