LAN8740A Datasheet, PDF (64/136 Pages) Microchip Technology – Small Footprint MII/RMII 10/100 Energy Efficient Ethernet Transceiver with HP Auto-MDIX and flexPWR® Technology

LAN8740A/LAN8740Ai
4.2.5 AUTO NEGOTIATION ADVERTISEMENT REGISTER
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
R/W
00b
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.
9 RESERVED
RO
8 100BASE-TX Full Duplex
R/W
0 = No TX full duplex ability
1 = TX with full duplex
7 100BASE-TX
R/W
0 = No TX ability
1 = TX able
6 10BASE-T Full Duplex
R/W
0 = No 10 Mbps with full duplex ability
1 = 10 Mbps with full duplex
5 10BASE-T
R/W
0 = No 10 Mbps ability
1 = 10 Mbps able
4:0 Selector Field
R/W
00001 = IEEE 802.3
-
(see Note 1)
1b
(see Note 1)
(see Note 1)
00001b
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.
DS00001987A-page 64
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