11.1.18 Basic Status

Clause 22 Basic Status Register
Name: BASIC_STATUS
Address: 0xFF01

Bit 15141312111098 
 100BT4A100BTXFDA100BTXHDA10BTFDA10BTHDA100BT2FDA100BT2HDAEXTSTS 
Access RORORORORORORORO 
Reset 00001000 
Bit 76543210 
 AUTONEGCRMTFLTDAUTONEGALNKSTSJABDETEXTCAPA 
Access RORORORORORORCRO 
Reset 00000101 

Bit 15 – 100BT4A 100BASE-T4 Ability

Note: 100BASE-T4 operation is not supported. This bit is always ‘0’.
ValueDescription
0 PHY not able to operate at 100BASE-T4
1 PHY able to operate at 100BASE-T4

Bit 14 – 100BTXFDA 100BASE-TX Full Duplex Ability

Note: 100BASE-TX full duplex operation is not supported. This bit is always ‘0’.
ValueDescription
0 PHY not able to perform full duplex 100BASE-TX
1 PHY able to perform full duplex 100BASE-TX

Bit 13 – 100BTXHDA 100BASE-TX Half Duplex Ability

Note: 100BASE-TX half duplex operation is not supported. This bit is always ‘0’.
ValueDescription
0 PHY not able to perform half duplex 100BASE-TX
1 PHY able to perform half duplex 100BASE-TX

Bit 12 – 10BTFDA 10BASE-T Full Duplex Ability

Note: Full duplex operation is not supported. This bit is always ‘0’.
ValueDescription
0 PHY not able to operate at 10 Mbit/s in full duplex
1 PHY able to operate at 10 Mbit/s in full duplex

Bit 11 – 10BTHDA 10BASE-T Half Duplex Ability

Note: Half duplex operation is supported. This bit is always ‘1’.
ValueDescription
0 PHY not able to operate at 10 Mbit/s in half duplex
1 PHY able to operate at 10 Mbit/s in half duplex

Bit 10 – 100BT2FDA 100BASE-T2 Full Duplex Ability

Note: 100BASE-T2 full duplex operation is not supported. This bit is always ‘0’.
ValueDescription
0 PHY not able to operate at 100BASE-T2 in full duplex
1 PHY able to operate at 100BASE-T2 in full duplex

Bit 9 – 100BT2HDA 100BASE-T2 Half Duplex Ability

Note: 100BASE-T2 half duplex operation is not supported. This bit is always ‘0’.
ValueDescription
0 PHY not able to operate at 100BASE-T2 in half duplex
1 PHY able to operate at 100BASE-T2 in half duplex

Bit 8 – EXTSTS Extended status information ability

Note: Extended status information is not available. This bit is always ‘0’.
ValueDescription
0 No extended status information in register 0xFF0F
1 Extended status information in register 0xFF0F

Bit 5 – AUTONEGC Auto-Negotiation Complete

Note: Auto-negotiation is not supported. This bit is always ‘0’.
ValueDescription
0 Auto-negotiation process has not completed
1 Auto-negotiation process has completed

Bit 4 – RMTFLTD Remote Fault Detection

Note: Remote fault detection is not supported. This bit is always ‘0’.
ValueDescription
0 No remote fault condition detected
1 Remote fault condition detected

Bit 3 – AUTONEGA Auto-Negotiation Ability

Note: Auto-negotiation is not supported. This bit is always ‘0’.
ValueDescription
0 PHY is not able to perform auto-negotiation
1 PHY is able to perform auto-negotiation

Bit 2 – LNKSTS Link Status

Note: Link status indication is not supported. This bit is always ‘1’.
ValueDescription
0 Network link is down
1 Network link is up

Bit 1 – JABDET Jabber Detection Status

This bit is set on detection of a jabber condition.
ValueDescription
0 No jabber condition detected
1 Jabber condition detected

Bit 0 – EXTCAPA Extended Capabilities Ability

When this bit is clear, it indicates that only the basic capability registers BASIC_CONTROL and BASIC_STATUS are available. When set, then extended registers in the range of 0xFF02-0xFF0F are available in addition to the basic capability registers.
Note: Extended capabilities registers are supported. This bit is always ‘1’.
ValueDescription
0 Extended capabilities registers between 0xFF02-0xFF0F are not supported. Only the basic capabilities registers BASIC_CONTROL and BASIC_STATUS registers are supported.
1 Extended capabilities registers between 0xFF02-0xFF0F are supported in addition to basic capabilities registers BASIC_CONTROL and BASIC_STATUS.