AM79C973KCW Advanced Micro Devices, AM79C973KCW Datasheet - Page 276
AM79C973KCW
Manufacturer Part Number
AM79C973KCW
Description
PCnet-FAST III Single-Chip 10/100 Mbps PCI Ethernet Controller with Integrated PHY
Manufacturer
Advanced Micro Devices
Datasheet
1.AM79C973KCW.pdf
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Auto-Negotiation Advertisement
Register (Register 4)
The purpose of this register is to advertise the technol-
ogy ability to the link partner device. See Table C-73.
Technology Ability Field Bit Assignments
The technology bit field consists of bits A0-A7 in the
IEEE 802.3 Selector Base Page. Table C-74 summa-
rizes the bit assignments.
276
Bit(s)
12:5
4:0
15
14
13
Bit
A0
A1
A2
A3
A4
A5
A6
A7
Table 74. Technology Ability Field Bit
Technology Ability
10BASE-T
10BASE-T Full Duplex
100BASE-TX
100BASE-TX Full Duplex
100BASE-T4
Reserved for future technology
Reserved for future technology
Reserved for future technology
Selector Field
Remote Fault
Next Page
Reserved
Name
Assignments
Table 73. Auto-Negotiation Advertisement Register (Register 4)
Technology
When set, the device wishes to engage in next page exchange. If clear, 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 word will
have the bit position for remote fault as cleared.
Link partner technology ability field.
Link partner selector field.
P R E L I M I N A R Y
Am79C973/Am79C975
Description
When this register is modified, Restart Auto-Negotia-
tion (Register 0, bit 9) must be enabled to guarantee
the change is implemented.
Read/
Write
R/W
R/W
RO
RO
RO
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