RTL8201(L)
2002-01-18 Rev.1.04
9
6.2 Register 1 Basic Mode Status
Address Name Description/Usage Default/Attribute
1:<15> 100Base-T4 100Base_T4: The RTL8201L supports the 100Base-T4 function. If the
chip is set to operate in this mode, this bit will return a ‘1’ when read.
1: Enable 100Base-T4 support
0: Suppress 100Base-T4 support
0, RO
1:<14> 100Base_TX_
FD
100Base_TX_FD: The RTL8201L is capable of operating in
100Base-TX full duplex mode. If the chip is set to operate in this mode,
this bit will return a ‘1’ when read.
1: Enable 100Base-TX full duplex support
0: Suppress 100Base-TX full duplex support
1, RO
1:<13> 100BASE_TX_
HD
100Base_TX_HD: The RTL8201L is capable of operating in
100Base-TX half duplex mode. If the chip is set to operate in this mode,
this bit will return a ‘1’ when read.
1: Enable 100Base-TX half duplex support
0: Suppress 100Base-TX half duplex support
1, RO
1:<12> 10Base_T_FD 10Base_T_FD: The RTL8201L is capable of operating in 10Base-T full
duplex mode. If the chip is set to operate in this mode, this bit will
return a ‘1’ when read.
1: Enable 10Base-T full duplex support
0: Suppress 10Base-T full duplex support
1, RO
1:<11> 10_Base_T_HD 10Base_T_HD: The RTL8201L is capable of operating in 10Base-T
half duplex mode. If the chip is set to operate in this mode, this bit will
return a ‘1’ when read.
1: Enable 10Base-T half duplex support
0: Suppress 10Base-T half duplex support
1, RO
1:<10:6> Reserved Reserved: Ignore the output of the RTL8201L when these bits are
read.
1:<5> Auto
Negotiation
Complete
Auto-negotiate Complete: Bit 5 will return a ‘1’ if the
Auto-negotiation process has been completed and the contents of
registers 4 and 5 are valid.
1: Auto-negotiation process completed
0: Auto-negotiation process not completed
0, RO
1:<4> Remote Fault Remote Fault: The PHY will return a ‘1’ in bit 4 when its Link Partner
has signaled a far-end fault condition. When a far end fault occurs, the bit
will be latched at ‘1’ and will remain so until the register is read and the
remote fault condition has been cleared.
1: Remote fault condition detected (cleared on read)
0: No remote fault condition detected
When in 100Base-FX mode, this bit means an in-band signal
Far-End-Fault is detected.
0, RO
1:<3> Auto
Negotiation
Auto-Negotiation Ability: The RTL8201L is capable of performing
IEEE Auto-negotiation, and will return a ‘1’ when bit 4 is read,
regardless of whether or not the Auto-negotiation function has been
disabled.
1: Link had not been experienced fail state
0: Link had been experienced fail state
1, RO
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