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AM79C976 Datasheet(PDF) 298 Page - Advanced Micro Devices

Part # AM79C976
Description  PCnet-PRO??10/100 Mbps PCI Ethernet Controller
PDF  309 Pages
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Manufacturer  AMD [Advanced Micro Devices]
Direct Link  http://www.amd.com
Logo AMD - Advanced Micro Devices

AM79C976 Datasheet(HTML) 298 Page - Advanced Micro Devices

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B-3
Am79C976
8/01/00
P R E L I M INARY
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 4.
When this register is modified, Restart Auto-Negotia-
tion (Register 0, bit 9) must be enabled to guarantee
the change is implemented.
Table B-4. Auto-Negotiation Advertisement Register (Register 4)
7HFKQRORJ\ $ELOLW\ )LHOG%LW $VVLJQPHQWV
The technology bit field consists of bits A0-A8 in the
IEEE 802.3 Selector Base Page. Table 5 summarizes
the bit assignments.
Table B-5. Technology Ability Field Bit
Assignments
Bit(s)
Name
Description
Read/
Write
15
Next Page
When set, the device wishes to engage in next page exchange. If clear, the
device does not wish to engage in next page exchange
R/W
14
Reserved
Ignore when read
RO
13
Remote Fault
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
R/W
12:5
Technology Ability
Technology ability field
R/W
4:0
Selector Field
Selector field
RO
Bit
Technology
A0
10BASE-T
A1
10BASE-T Full Duplex
A2
100BASE-TX
A3
100BASE-TX Full Duplex
A4
100BASE-T4
A5
PAUSE operation for full duplex links
A6
Reserved for future technology
A7
Reserved for future technology



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