LM3S6950 Datasheet, PDF (403/524 Pages) List of Unclassifed Manufacturers – Microcontroller

LM3S6950 Microcontroller
Register 26: Ethernet PHY Management Register 18 – Diagnostic (MR18),
offset 0x12
This register enables software to diagnose the results of the previous Auto-Negotiation.
Ethernet PHY Management Register 18 – Diagnostic (MR18)
Base 0x4004.8000
Offset 0x12
Type RO, reset 0x0000
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
9
8
7
6
5
4
3
2
1
0
reserved
ANEGF DPLX RATE RXSD RX_LOCK
reserved
Type RO
RO
RO
RC
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
Bit/Field
31:13
12
11
10
9
8
7:0
Name
reserved
ANEGF
DPLX
RATE
RXSD
RX_LOCK
reserved
Type
RO
RC
RO
RO
RO
RO
RO
Reset
0
0
0
0
0
0
00
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.
Auto-Negotiation Failure
When set, indicates that no common technology was found during
Auto-Negotiation and has failed. This bit remains set until read.
Duplex Mode
When set, indicates that Full-Duplex was the highest common
denominator found during the Auto-Negotiation process. Otherwise,
Half-Duplex was the highest common denominator found.
Rate
When set, indicates that 100Base-TX was the highest common
denominator found during the Auto-Negotiation process. Otherwise,
10Base-TX was the highest common denominator found.
Receive Detection
When set, indicates that receive signal detection has occurred (in
100Base-TX mode) or that Manchester encoded data has been detected
(in 10Base-T mode).
Receive PLL Lock
When set, indicates that the Receive PLL has locked onto the receive
signal for the selected speed of operation (10Base-T or 100Base-TX).
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.
June 14, 2007
403
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