Appendix B: Auto Negotiation
Summary of MII Registers and Bit Definitions
208
SmartBits System Reference
4
Selector Field
Reserved
3
2
1
0
Table C-6. Bit Definitions for MII Register 9 (1000BASE-T Control Register)
Bit
Name
Description
15
Transmitter Test Mode
Default bit values are
00
14
13
Receiver Test Mode
Default bit value is
0
12
Master/Slave Manual
Configuration Enable
1 = Enable Master/Slave Manual Configuration value
0 = Disable Master/Slave Manual Configuration value
11
Master/Slave Manual
Configuration Value
1 = Configure PHY as Master during AN (only when
Bit 12 = 1)
0 = Configure PHY as Slave during AN (only when Bit
12 = 1)
10
T2_Repeater/DTE Bit
1 = Repeater device port
0 = DTE device
9-0
Reserved
Ignored when read.
Table C-5. Bit Definitions for MII Register 4 (AN Advertisement) and Register 5 (AN Link
Partner)
Bit
Name
Description
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