am79c901a Advanced Micro Devices, am79c901a Datasheet - Page 47

• Manufacturer Part Number: am79c901a
• Description: Homephy Single-chip 1/10 Mbps Home Networking Phy
• Manufacturer: Advanced Micro Devices

HPR4: HomePNA PHY Auto-Negotiation Advertisement Register (Register 4)
This register contains the advertised ability of the
Am79C901A device. The purpose of this register is to
advertise the technology ability to the link partner de-
12:11
Bits
4:0
15
14
13
10
9
8
7
6
5
Table 21. HPR4: HomePNA PHY Auto-Negotiation Advertisement Register (Register 4)
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Reserved
Remote Fault
Reserved
PAUSE
Reserved
Full-Duplex
100BASE-TX
Half-Duplex
100BASE-TX
Full-Duplex
10BASE-T
Half-Duplex
10BASE-T
Selector Field
Name
When set, the device wishes to engage in next page exchange. If
cleared, the device does not wish to engage in next page
exchange.
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.
This bit should be set if the PAUSE capability is to be advertised.
This bit advertises Full-Duplex capability. When set, Full-Duplex
capability is advertised. When cleared, Full-Duplex capability is
not advertised.
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.
This bit advertises Full-Duplex capability. When set, Full-Duplex
capability is advertised. When cleared, Full-Duplex capability is
not advertised.
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.
The Am79C901A device is an IEEE 802.3 compliant device.
P R E L I M I N A R Y
Am79C901A
Description
vice. When this register is modified, Restart Auto-Ne-
gotiation (Register 0, bit 9) must be enabled to
guarantee the change is implemented.
Read/Write
R
R
R
R
R
R
R
R
R
R
R
Default
Value
(hex)
01
0
0
0
0
0
0
0
0
0
1
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