Datasheet

Register 17: Ethernet PHY Management Register 1 – Status (MR1), address
0x01
This register enables software to determine the capabilities of the PHY layer and perform its
initialization and operation appropriately.
Ethernet PHY Management Register 1 – Status (MR1)
Base 0x4004.8000
Address 0x01
Type RO, reset 0x7849
0123456789101112131415
EXTDJABLINKANEGARFAULTANEGCMFPSreserved10T_H10T_F100X_H100X_F
reserved
RORCRORORCROROROROROROROROROROROType
1001001000011110Reset
DescriptionResetTypeNameBit/Field
Software should not rely on the value of a reserved bit. To provide
compatibility with future products, the value of a reserved bit should be
preserved across a read-modify-write operation.
0ROreserved15
100BASE-TX Full-Duplex Mode
When set, this bit indicates that the Ethernet Controller is capable of
supporting 100BASE-TX Full-Duplex mode.
1RO100X_F14
100BASE-TX Half-Duplex Mode
When set, this bit indicates that the Ethernet Controller is capable of
supporting 100BASE-TX Half-Duplex mode.
1RO100X_H13
10BASE-T Full-Duplex Mode
When set, this bit indicates that the Ethernet Controller is capable of
10BASE-T Full-Duplex mode.
1RO10T_F12
10BASE-T Half-Duplex Mode
When set, this bit indicates that the Ethernet Controller is capable of
supporting 10BASE-T Half-Duplex mode.
1RO10T_H11
Software should not rely on the value of a reserved bit. To provide
compatibility with future products, the value of a reserved bit should be
preserved across a read-modify-write operation.
0ROreserved10:7
Management Frames with Preamble Suppressed
When set, this bit indicates that the Management Interface is capable
of receiving management frames with the preamble suppressed.
1ROMFPS6
Auto-Negotiation Complete
When set, this bit indicates that the auto-negotiation process has been
completed and that the extended registers defined by the
auto-negotiation protocol are valid.
0ROANEGC5
Remote Fault
When set, this bit indicates that a remote fault condition has been
detected. This bit remains set until it is read, even if the condition no
longer exists.
0RCRFAULT4
Auto-Negotiation
When set, this bit indicates that the Ethernet Controller has the ability
to perform auto-negotiation.
1ROANEGA3
631June 18, 2012
Texas Instruments-Production Data
Stellaris
®
LM3S8962 Microcontroller
NRND: Not recommended for new designs.