Datasheet

LAN8740A/LAN8740Ai
DS00001987A-page 64  2013-2015 Microchip Technology Inc.
4.2.5 AUTO NEGOTIATION ADVERTISEMENT REGISTER
Note 1: The default value of this bit is determined by the MODE[2:0] configuration straps. Refer to Section 3.7.2,
"MODE[2:0]: Mode Configuration" for additional information.
Index (In Decimal): 4 Size: 16 bits
Bits Description Type Default
15 Next Page
0 = No next page ability
1 = Next page capable
R/W 0b
14 RESERVED RO -
13 Remote Fault
0 = No remote fault
1 = Remote fault detected
R/W 0b
12 RESERVED RO -
11:10 Pause Operation
00 = No PAUSE
01 = Symmetric PAUSE
10 = Asymmetric PAUSE toward link partner
11 = Advertise support for both Symmetric PAUSE and Asymmetric PAUSE
toward local device
Note: When both symmetric PAUSE and asymmetric PAUSE are set, the
device will only be configured to, at most, one of the two settings
upon auto-negotiation completion.
R/W 00b
9 RESERVED RO -
8 100BASE-TX Full Duplex
0 = No TX full duplex ability
1 = TX with full duplex
R/W (see Note 1)
7 100BASE-TX
0 = No TX ability
1 = TX able
R/W 1b
6 10BASE-T Full Duplex
0 = No 10 Mbps with full duplex ability
1 = 10 Mbps with full duplex
R/W (see Note 1)
5 10BASE-T
0 = No 10 Mbps ability
1 = 10 Mbps able
R/W (see Note 1)
4:0 Selector Field
00001 = IEEE 802.3
R/W 00001b