AM79C978 Advanced Micro Devices, AM79C978 Datasheet - Page 180
AM79C978
Manufacturer Part Number
AM79C978
Description
Single-Chip 1/10 Mbps PCI Home Networking Controller
Manufacturer
Advanced Micro Devices
Datasheet
1.AM79C978.pdf
(261 pages)
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HPR1: HomePNA PHY MII Status
180
Bits
10:7
15
14
13
12
11
6
5
4
3
2
1
0
MII_Status
100BASE-T4
100BASE-X Full-Duplex
100BASE-X Half-Duplex
10 Mbps Full-Duplex
10 Mbps Half-Duplex
Reserved
MF Preamble Suppression
Auto-Negotiation Complete
Remote Fault
Auto-Negotiation Ability
Link Status
Jabber Detect
Extended Capability
Mnemonic
Table 47. HPR1: HomePNA PHY MII Status (Register 1)
(Register 1)
0 = PHY not able to perform 100BASE-T4
0 = PHY not able to perform Full-Duplex
100BASE-X
0 = PHY not able to perform Half-Duplex
100BASE-X
0 = PHY not able to perform 10 Mbps in Full-
Duplex
1 = PHY able to perform 10 Mbps in Half-
Duplex
Reads will produce undefined results
1 = PHY will accept management frames with
Preamble suppressed
0 = PHY will not accept management frames
with Preamble suppressed
1 = Auto-Negotiation completed
0 = Auto-Negotiation not completed
1 = Remote fault detected
0 = Normal operation
1 = PHY is able to perform Auto-Negotiation
0 = PHY is not able to perform Auto-Negotiation
1 = Link is up
0 = Link is down
This bit will be RESET (latched low and re-
enabled on Read) on the first occurrence of lost
link and will be SET after completion of valid
LINK process.
1 = Jabber condition detected
0 = Normal operation
1 = Extended Register Capability
0 = Basic Register Set Capability
Am79C978
Description
Read/
Write
R
R
R
R
R
R
R
R
R
R
R
R
R
Default
Hex
0
0
0
0
1
1
0
0
0
0
0
1
Reset
Soft
0
0
0
0
1
1
0
0
0
0
0
1
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