SMSC LAN9420i Manual De Usuario
Single-Chip Ethernet Controller with HP Auto-MDIX Support and PCI Interface
Datasheet
Revision 1.22 (09-25-08)
140
SMSC LAN9420/LAN9420i
DATASHEET
4.5.5
Auto Negotiation Advertisement
Note 4.5
When both symmetric PAUSE and asymmetric PAUSE support are advertised (value of
11), the device will only be configured to, at most, one of the two settings upon auto-
negotiation completion.
11), the device will only be configured to, at most, one of the two settings upon auto-
negotiation completion.
Index (In Decimal):
4
Size:
16 bits
BITS
DESCRIPTION
TYPE
DEFAULT
15
RESERVED
R/W
0b
14
RESERVED
RO
-
13
Remote Fault
1 = remote fault detected, 0 = no remote fault
1 = remote fault detected, 0 = no remote fault
R/W
0b
12
RESERVED
R/W
-
11:10
Pause Operation (See
)
00 No PAUSE
01 Symmetric PAUSE
10 Asymmetric PAUSE
11 Advertise support for both symmetric PAUSE and Asymmetric PAUSE
01 Symmetric PAUSE
10 Asymmetric PAUSE
11 Advertise support for both symmetric PAUSE and Asymmetric PAUSE
R/W
00b
9
RESERVED
R/W
0b
8
100BASE-TX Full Duplex
1 = TX with full duplex, 0 = no TX full
duplex ability
1 = TX with full duplex, 0 = no TX full
duplex ability
R/W
1b
7
100BASE-TX
1 = TX able, 0 = no TX ability
1 = TX able, 0 = no TX ability
R/W
1b
6
10BASE-T Full Duplex
1 = 10Mbps with full duplex
0 = no 10Mbps with full duplex ability
1 = 10Mbps with full duplex
0 = no 10Mbps with full duplex ability
R/W
1b
5
10BASE-T
1 = 10Mbps able, 0 = no 10Mbps ability
1 = 10Mbps able, 0 = no 10Mbps ability
R/W
1b
4:0
Selector Field
[00001] = IEEE 802.3
[00001] = IEEE 802.3
R/W
00001b