LM3S9B81 Datasheet, PDF (857/1155 Pages) Texas Instruments – Stellaris® LM3S9B81 Microcontroller

Stellaris® LM3S9B81 Microcontroller
Register 26: Ethernet PHY Management Register 27 – Special Control/Status
(MR27), address 0x1B
This register shows the status of the 10BASE-T polarity.
Ethernet PHY Management Register 27 – Special Control/Status (MR27)
Base 0x4004.8000
Address 0x1B
Type RO, reset -
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
reserved
XPOL
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
Bit/Field
15:5
4
Name
reserved
XPOL
Type
RO
RO
Reset
0x000
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.
Polarity State of 10 BASE-T
Value Description
1 The 10BASE-T is reversed polarity.
0 The 10BASE-T is normal polarity.
3:0
reserved
RO
0x0
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 29, 2010
857
Texas Instruments-Advance Information