Fast Ethernet 10/100 Quad Transceivers — LXT974/LXT975
Table 48. Auto Negotiation Advertisement Register (Address 4)
Bit
4.15
Name
Description
Type 1
Default
Next Page
Reserved
Not supported.
Ignore.
RO
RO
0
0
4.14
4.13
1 = Remote fault.
0 = No remote fault.
Remote Fault
R/W
R/W
0
0
4.12:11 Reserved
Ignore.
1 = Pause operation is enabled for full-duplex links.
0 = Pause operation is disabled.
4.10
4.9
Pause
R/W
0
1 = 100BASE-T4 capability is available.
0 = 100BASE-T4 capability is not available.
(The LXT974/975 does not support 100BASE-T4 but allows this bit to be
set to advertise in the Auto-Negotiation sequence for 100BASE-T4
operation. An external 100BASE-T4 transceiver could be switched in if this
capability is desired.)
100BASE-T4
R/W
0
100BASE-TX
full-duplex
1 = Port is 100BASE-TX full-duplex capable.
0 = Port is not 100BASE-TX full-duplex capable.
4.8
4.7
R/W
R/W
Note 2
Note 3
1 = Port is 100BASE-TX capable.
0 = Port is not 100BASE-TX capable.
100BASE-TX
1 = Port is 10BASE-T full-duplex capable.
0 = Port is not 10BASE-T full-duplex capable.
10BASE-T
full-duplex
4.6
4.5
R/W
R/W
Note 4
Note 5
1 = Port is 10BASE-T capable.
10BASE-T
0 = Port is not 10BASE-T capable.
<00001> = IEEE 802.3.
<00010> = IEEE 802.9 ISLAN-16T.
Selector Field,
S<4:0>
4.4:0
<00000> = Reserved for future Auto-Negotiation development.
<11111> = Reserved for future Auto-Negotiation development.
Unspecified or reserved combinations should not be transmitted.
R/W
00001
1. R/W = Read/Write
RO = Read Only
2. The default value of bit 4.8 is determined by FDE ANDed with CFG_2.
3. The default value of bit 4.7 is determined by CFG_2.
4. The default value of bit 4.6 is determined by FDE AND’ed with CFG_1.
5. The default value of bit 4.5 is determined by CFG_1.
Table 49. Auto Negotiation Link Partner Ability Register (Address 5)
Bit
5.15
Name
Description
Type 1
Default
1 = Link Partner has ability to send multiple pages.
0 = Link Partner has no ability to send multiple pages.
Next Page
RO
N/A
1 = Link Partner has received Link Code Word from LXT974/975.
0 = Link Partner has not received Link Code Word from the
LXT974/975.
5.14
5.13
Acknowledge
Remote Fault
RO
N/A
1 = Remote fault.
0 = No remote fault.
RO
RO
N/A
N/A
5.12:11 Reserved
1. RO = Read Only
Ignore.
Datasheet
67
INTEL [ INTEL ]
