LXT974/LXT975 — Fast Ethernet 10/100 Quad Transceivers
Table 49. Auto Negotiation Link Partner Ability Register (Address 5) (Continued)
Bit
Name
Description
Type 1
Default
1 = Pause operation is enabled for link partner.
0 = Pause operation is disabled.
5.10
Pause
RO
N/A
1 = Link Partner is 100BASE-T4 capable.
0 = Link Partner is not 100BASE-T4 capable.
5.9
5.8
5.7
100BASE-T4
RO
RO
RO
N/A
N/A
N/A
100BASE-TX
full-duplex
1 = Link Partner is 100BASE-TX full-duplex capable.
0 = Link Partner is not 100BASE-TX full-duplex capable.
1 = Link Partner is 100BASE-TX capable.
0 = Link Partner is not 100BASE-TX capable.
100BASE-TX
10BASE-T
full-duplex
1 = Link Partner is 10BASE-T full-duplex capable.
0 = Link Partner is not 10BASE-T full-duplex capable.
5.6
5.5
RO
RO
N/A
N/A
1 = Link Partner is 10BASE-T capable.
0 = Link Partner is not 10BASE-T capable.
10BASE-T
<00001> = IEEE 802.3.
<00010> = IEEE 802.9 ISLAN-16T.
Selector Field
S<4:0>
5.4:0
<00000> = Reserved for future Auto-Negotiation development.
<11111> = Reserved for future Auto-Negotiation development.
Unspecified or reserved combinations shall not be transmitted.
RO
N/A
1. RO = Read Only
Table 50. Auto Negotiation Expansion (Address 6)
Bit
Name
Reserved
Parallel
Description
Type 1
Default
6.15:5
Ignore on read.
1 = Parallel detection fault has occurred.
RO
0
RO/
LH
6.4
0
Detection Fault 0 = Parallel detection fault has not occurred.
Link Partner 1 = Link partner is next page able.
6.3
6.2
RO
RO
0
0
Next Page Able 0 = Link partner is not next page able.
Next Page Able Not supported.
1 = Three identical and consecutive link code words have been received
from link partner.
RO
LH
6.1
Page Received
0
0
0 = Three identical and consecutive link code words have not been
received from link partner.
Link Partner A/ 1 = Link partner is auto-negotiation able.
N Able 0 = Link partner is not auto-negotiation able.
6.0
RO
1. RO = Read Only LH = Latching High
Table 51. LED Configuration Register (Address 16, Hex 10)
Bit
Name
Description
Type 1
Default
16.15:12 User Defined
No effect on chip operation.
Ignore on read.
R/W
RO
N/A
N/A
16.11:9
16.8
Reserved
1 = Faster rise time - May be used to adjust output pulse to match
magnetic performance.
TX Pulse Tuning
R/W
0
0 = Normal Operation - Provides best match for most magnetics.
1. R/W = Read /Write
68
Datasheet
INTEL [ INTEL ]
