Small Footprint RMII 10/100 Ethernet Transceiver with HP Auto-MDIX Support
Datasheet
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
13
12
11
10
9
100BASE-TX Full Duplex
0 = no TX full duplex ability
1 = TX with full duplex
RO
RO
RO
RO
RO
RO
RO
1b
1b
1b
1b
0b
0b
0b
100BASE-TX Half Duplex
0 = no TX half duplex ability
1 = TX with half duplex
10BASE-T Full Duplex
0 = no 10Mbps with full duplex ability
1 = 10Mbps with full duplex
10BASE-T Half Duplex
0 = no 10Mbps with half duplex ability
1 = 10Mbps with half duplex
100BASE-T2 Full Duplex
0 = PHY not able to perform full duplex 100BASE-T2
1 = PHY able to perform full duplex 100BASE-T2
100BASE-T2 Half Duplex
0 = PHY not able to perform half duplex 100BASE-T2
1 = PHY able to perform half duplex 100BASE-T2
8
Extended Status
0 = no extended status information in register 15
1 = extended status information in register 15
7:6
5
RESERVED
RO
RO
-
Auto-Negotiate Complete
0 = auto-negotiate process not completed
1 = auto-negotiate process completed
0b
4
3
2
1
0
Remote Fault
RO/LH
RO
0b
1b
0b
0b
1b
1 = remote fault condition detected
0 = no remote fault
Auto-Negotiate Ability
0 = unable to perform auto-negotiation function
1 = able to perform auto-negotiation function
Link Status
0 = link is down
1 = link is up
RO/LL
RO/LH
RO
Jabber Detect
0 = no jabber condition detected
1 = jabber condition detected
Extended Capabilities
0 = does not support extended capabilities registers
1 = supports extended capabilities registers
Revision 1.4 (08-23-12)
50
SMSC LAN8720A/LAN8720Ai
DATASHEET
SMSC [ SMSC CORPORATION ]
