
LXT9785 and LXT9785E Advanced 8-Port 10/100 Mbps PHY Transceivers
206
Datasheet
Document Number: 249241
Revision Number: 010
Revision Date: 30-May-2006
Table 89. Auto-Negotiation Expansion Register (Address 6)
Bit
Name
Description
Type1
Default
15:5
Reserved
Write as 0, ignore on Read
R
0x000
4
Parallel
Detection Fault
0 = Parallel detection fault has not occurred
1 = Parallel detection fault has occurred
R/
LH
0
3
Link Partner
Next Page Able
0 = Link partner is not next page able
1 = Link partner is next page able
R0
2
Next Page Able
R1
1
Page Received
Indicates that a new page has been received and the
received code word has been loaded into Register 5 or
Register 8 as specified in clause 28 of 802.3.
0 = Three identical and consecutive link code words have
not been received from link partner
1 = Three identical and consecutive link code words have
been received from link partner
R/
LH
0
Link Partner
A/N Able
0 = Link partner is not auto-negotiation able
1 = Link partner is auto-negotiation able
R0
1. R = Read Only, LH = Latching High – cleared when read
Table 90. Auto-Negotiation Next Page Transmit Register (Address 7)
Bit
Name
Description
Type
1
Default
15
Next Page
(NP)
0 = Last page
1 = Additional next pages follow
R/W
0
14
Reserved
Write as 0, ignore on Read.
R
0
13
Message Page
(MP)
0 = Unformatted page
1 = Message page
R/W
1
12
Acknowledge 2
(ACK2)
0 = Cannot comply with message
1 = Complies with message
R/W
0
11
Toggle
(T)
0 = Previous value of the transmitted link code word
equalled logic one
1 = Previous value of the transmitted link code word
equalled logic zero
R0
10:0
Message/
Unformatted
Code Field
MP = 0: Code interpreted as “unformatted page”
MP = 1: Code interpreted as “message page”
R/W
0000000
0001
1. R/W = Read Write, R = Read Only