TBR4: 10BASE-T Auto-Negotiation Advertisement
Register (Register 4)
this register is to advertise the technology ability to the
link partner device. See Table 69.
This register contains the advertised ability of the
Am79C978 home networking device. The purpose of
When this register is modified, Restart Auto-
Negotiation (Register 0, bit 9) must be enabled to guar-
antee the change is implemented.
Table 69. TBR4: 10BASE-T Auto-Negotiation Advertisement Register (Register 4)
Read/
H/W or Soft
Reset
Bit(s)
15
Name
Description
Write
R/W
RO
When set, the device wishes to engage in next page exchange. If
clear, the device does not wish to engage in next page exchange.
Next Page
Reserved
0
0
14
When set, a remote fault bit is inserted into the base link code
word during the Auto Negotiation process. When cleared, the
base link code work will have the bit position for remote fault as
cleared.
13
Remote Fault
R/W
0
12:11
10
Reserved
PAUSE
RO
R/W
RO
0
0
0
This bit should be set if the PAUSE capability is to be advertised.
9
Reserved
Full-Duplex -
100BASE-TX
This bit advertises Full-Duplex capability. When set, Full-Duplex
capability is advertised. When cleared, Full-Duplex capability is
not advertised.
8
7
6
R/W
R/W
R/W
0
0
1
Half-Duplex -
100BASE-TX
This bit advertises Half-Duplex capability for the Auto-negotiation
process. Setting this bit advertises Half-Duplex capability.
Clearing this bit does not advertise Half-Duplex capability.
Full-Duplex -
10BASE-T
This bit advertises Full-Duplex capability. When set, Full-Duplex
capability is advertised. When cleared, Full-Duplex capability is
not advertised.
Half-Duplex -
10BASE-T
This bit advertises Half-Duplex capability for the Auto-negotiation
process. Setting this bit advertises Half-Duplex capability.
Clearing this bit does not advertise Half-Duplex capability.
5
R/W
RO
1
The Am79C978 home networking device is an 802.3 compliant
device
4:0
Selector Field
0x01
192
Am79C978
AMD [ AMD ]
