Datasheet

 2013-2015 Microchip Technology Inc. DS00001987A-page 61
LAN8740A/LAN8740Ai
4.2.2 BASIC STATUS REGISTER
Index (In Decimal): 1 Size: 16 bits
Bits Description Type Default
15 100BASE-T4
0 = No T4 ability
1 = T4 able
RO 0b
14 100BASE-TX Full Duplex
0 = No TX full duplex ability
1 = TX with full duplex
RO 1b
13 100BASE-TX Half Duplex
0 = No TX half duplex ability
1 = TX with half duplex
RO 1b
12 10BASE-T Full Duplex
0 = No 10 Mbps with full duplex ability
1 = 10 Mbps with full duplex
RO 1b
11 10BASE-T Half Duplex
0 = No 10 Mbps with half duplex ability
1 = 10 Mbps with half duplex
RO 1b
10 100BASE-T2 Full Duplex
0 = PHY is not able to perform full duplex 100BASE-T2
1 = PHY is able to perform full duplex 100BASE-T2
RO 0b
9 100BASE-T2 Half Duplex
0 = PHY is not able to perform half duplex 100BASE-T2
1 = PHY is able to perform half duplex 100BASE-T2
RO 0b
8 Extended Status
0 = No extended status information in register 15
1 = Extended status information in register 15
RO 0b
7:6 RESERVED RO -
5 Auto-Negotiate Complete
0 = Auto-negotiate process not completed
1 = Auto-negotiate process completed
RO 0b
4 Remote Fault
1 = Remote fault condition detected
0 = No remote fault
RO/LH 0b
3 Auto-Negotiate Ability
0 = Unable to perform auto-negotiation function
1 = Able to perform auto-negotiation function
RO 1b
2 Link Status
0 = Link is down.
1 = Link is up.
RO/LL 0b
1 Jabber Detect
0 = No jabber condition detected.
1 = Jabber condition detected.
RO/LH 0b
0 Extended Capabilities
0 = Does not support extended capabilities registers
1 = Supports extended capabilities registers
RO 1b