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AM79C975VCW Datasheet(PDF) 197 Page - Advanced Micro Devices

Part # AM79C975VCW
Description  PCnet??FAST III Single-Chip 10/100 Mbps PCI Ethernet Controller with Integrated PHY
PDF  304 Pages
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Manufacturer  AMD [Advanced Micro Devices]
Direct Link  http://www.amd.com
Logo AMD - Advanced Micro Devices

AM79C975VCW Datasheet(HTML) 197 Page - Advanced Micro Devices

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Am79C973/Am79C975
197
P R E L I M INARY
ANR4: Auto-Negotiation Advertisement Register
(Register 4)
This register contains the advertised ability of the
Am79C973/Am79C975 device. The purpose of this
register is to advertise the technology ability to the link
partner device. See Table 44.
When this register is modified, Re s tar t Au to -
Negotiation (Register 0, bit 9) must be enabled to guar-
antee the change is implemented.
Table 44. ANR4: Auto-Negotiation Advertisement Register (Register 4)
Bit(s)
Name
Description
Read/
Write
H/W or Soft
Reset
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
0
14
Reserved
RO
0
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 work will have the bit position for remote fault as
cleared.
R/W
0
12:11
Reserved
RO
0
10
PAUSE
This bit should be set if the PAUSE capability is to be advertised.
R/W
0
9
Reserved
RO
0
8
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.
R/W
1
7
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.
R/W
1
6
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.
R/W
1
5
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.
R/W
1
4:0
Selector Field
The Am79C973/Am79C975 device is an 802.3 compliant device
RO
0x01



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