10BASE-T PHY Management Registers
Writes to registers marked “Reserved” will be written as
zeros. Reads from these locations will produce unde-
fined values.
Table 91. 10BASE-T PHY Management Registers (TBRs)
Register
Address
Default Value After
H_RESET
Symbol
Name
0
TBR0
PHY Control Register
PHY Status Register
PHY_ID[31:16]
2500h
7849h
0000h
6BA0h
03C1h
0000h
0004h
2001h
--
1
TBR1
TBR2
2
3
TBR3
PHY_ID[15:0]
4
TBR4
Auto-Negotiation Advertisement Register
Auto-Negotiation Link Partner Ability Register
Auto-Negotiation Expansion Register
Auto-Negotiation Next Page Register
Reserved
5
TBR5
6
TBR6
7
TBR7
8-15
16
17
18
19
20-23
24
25-31
TBR8-TBR15
TBR16
TBR17
TBR18
TBR19
Interrupt Status and Enable Register
PHY Control/Status Register
Reserved
0000h
0001h
--
PHY Management Extension Register
--
TBR20-TBR23 Reserved
--
TBR24
Summary Status Register
0001h
--
TBR25-TBR31 Reserved
Am79C978
213
AMD [ AMD ]
