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AM79C975VCW Datenblatt(PDF) 199 Page - Advanced Micro Devices

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

AM79C975VCW Datenblatt(HTML) 199 Page - Advanced Micro Devices

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Am79C973/Am79C975
199
P R E L I M INARY
ANR6: Auto-Negotiation Expansion Register
(Register 6)
The Auto-Negotiation Expansion Register provides ad-
ditional information which aids the Auto-Negotiation
process. The Auto-Negotiation Expansion Register bits
are Read Only. See Table 47.
Table 47. ANR6: Auto-Negotiation Expansion Register (Register 6)
ANR7: Auto-Negotiation Next Page Register
(Register 7)
The Auto-Negotiation Next Page Register contains the
next page link code word to be transmitted. On power-
up the default value of 0x2001 represents a message
page with the message code set to null. See Table 48.
Table 48. ANR7: Auto-Negotiation Next Page Register (Register 7)
Reserved Registers (Registers 8-15, 20-23, and 25-
31)
The Am79C973/Am79C975 device contains reserved
registers at addresses 8-15, 20-23, and 25-31. These
registers should be ignored when read and should not
be written at any time.
Bit(s)
Name
Description
Read/
Write
H/W or Soft
Reset
15:5
Reserved
RO
0
4
Parallel Detection
Fault
1=Parallel detection fault
0=No parallel detection fault
RO, LH
0
3
Link Partner Next
Page Able
1 = Link partner is next page able.
0 = Link partner is not next page able.
RO
0
2
Next Page Able
1 = Am79C973/Am79C975 device channel is next page able
0 = Am79C973/Am79C975 device channel is not next page able
RO
1
1
Page Received
1 = A new page has been received.
0 = A new page has not been received.
RO, LH
0
0
Link Partner ANEG
Able
1 = Link partner is Auto-Negotiation able.
0 = Link partner is not Auto-Negotiation able.
RO
0
Bit(s)
Name
Description
Read/
Write
H/W or Soft
Reset
15
Next Page
Am79C973/Am79C975 device channel next page request.
R/W
0
14
Reserved
RO
0
13
Message Page
Am79C973/Am79C975 device channel message page request
R/W
1
12
Acknowledge 2
1 = Am79C973/Am79C975 device channel can comply with the
request
0 = Am79C973/Am79C975 device channel cannot comply with
the request
R/W
0
11
Toggle
Am79C973/Am79C975 device channel toggle bit.
RO
0
10:0
Message Field
Message code field.
R/W
0x001



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