LM3S6950 Datasheet, PDF (391/524 Pages) List of Unclassifed Manufacturers – Microcontroller

LM3S6950 Microcontroller
Register 18: Ethernet PHY Management Register 1 – Status (MR1), offset 0x01
This register enables software to determine the capabilities of the PHY and perform its initialization
and operation appropriately.
Ethernet PHY Management Register 1 – Status (MR1)
Base 0x4004.8000
Offset 0x01
Type RO, reset 0x7849
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
reserved
Type RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
Reset
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
15
14
13
12
11
10
reserved 100X_F 100X_H 10T_F 10T_H
Type RO
RO
RO
RO
RO
RO
Reset
0
1
1
1
1
0
9
8
reserved
RO
RO
0
0
7
6
5
4
3
2
1
0
MFPS ANEGC RFAULT ANEGA LINK
JAB EXTD
RO
RO
RO
RC
RO
RO
RC
RO
0
1
0
0
1
0
0
1
Bit/Field
31:15
14
13
12
11
10:7
6
5
Name
reserved
100X_F
100X_H
10T_F
10T_H
reserved
MFPS
ANEGC
Type
RO
RO
RO
RO
RO
RO
RO
RO
Reset
0
1
1
1
1
0
1
0
Description
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.
100BASE-TX Full-Duplex Mode
When set, indicates that the PHY is capable of supporting 100BASE-TX
Full Duplex mode.
100BASE-TX Half-Duplex Mode
When set, indicates that the PHY is capable of supporting 100BASE-TX
Half-Duplex mode.
10BASE-T Full-Duplex Mode
When set, indicates that the PHY is capable of 10BASE-T Full-Duplex
mode.
10BASE-T Half-Duplex Mode
When set, indicates that the PHY is capable of supporting 10BASE-T
Half-Duplex mode.
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.
Management Frames with Preamble Suppressed
When set, indicates that the Management Interface is capable of
receiving management frames with the preamble suppressed.
Auto-Negotiation Complete
When set, indicates that the Auto-Negotiation process has been
completed and that the extended registers defined by the
Auto-Negotiation protocol are valid.
June 14, 2007
391
Luminary Micro Confidential-Advance Product Information