LAN9420 Datasheet, PDF (141/171 Pages) SMSC Corporation – Single-Chip Ethernet Controller with HP Auto-MDIX Support and PCI Interface

Single-Chip Ethernet Controller with HP Auto-MDIX Support and PCI Interface
Datasheet
4.5.5 Auto Negotiation Advertisement
Index (In Decimal): 4
Size:
16 bits
BITS
15
14
13
12
11:10
9
8
7
6
5
4:0
DESCRIPTION
RESERVED
RESERVED
Remote Fault
1 = remote fault detected, 0 = no remote fault
RESERVED
Pause Operation (See Note 4.5)
00 No PAUSE
01 Symmetric PAUSE
10 Asymmetric PAUSE
11 Advertise support for both symmetric PAUSE and Asymmetric PAUSE
RESERVED
100BASE-TX Full Duplex
1 = TX with full duplex, 0 = no TX full
duplex ability
100BASE-TX
1 = TX able, 0 = no TX ability
10BASE-T Full Duplex
1 = 10Mbps with full duplex
0 = no 10Mbps with full duplex ability
10BASE-T
1 = 10Mbps able, 0 = no 10Mbps ability
Selector Field
[00001] = IEEE 802.3
TYPE
R/W
RO
R/W
R/W
R/W
DEFAULT
0b
-
0b
-
00b
R/W
0b
R/W
1b
R/W
1b
R/W
1b
R/W
1b
R/W
00001b
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.
SMSC LAN9420/LAN9420i
141
DATASHEET
Revision 1.6 (07-18-11)