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AM79C978VC/W 数据表(PDF) 179 Page - Advanced Micro Devices

部件名 AM79C978VC/W
功能描述  Single-Chip 1/10 Mbps PCI Home Networking Controller
PDF  261 Pages
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制造商  AMD [Advanced Micro Devices]
网页  http://www.amd.com
标志 AMD - Advanced Micro Devices

AM79C978VC/W 数据表(HTML) 179 Page - Advanced Micro Devices

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Am79C978
179
1 Mbps HomePNA PHY Internal Registers
The registers of the HomePNA PHY are accessible via
the internal MII interface. This interface uses the MII
Control, Address, and Data Registers (BCR32,
BCR33, and BCR34) in the integrated PCnet controller
to control and communicate to the HomePNA PHY via
the MDC and MDIO signals.
See Table 46 through Table 63.
HPR0: HomePNA PHY MII Control (Register 0)
Table 46.
HPR0: HomePNA PHY MII Control (Register 0)
Bits
Mnemonic
Description
Read/
Write
Default
Hex
Soft
Reset
MII_CONTROL
15
RESET
1 = RESET
0 = Normal operation
** Self Clearing
R/W
0
0
14
Loopback
1 = MII Loopback enabled
0 = MII Loopback disabled
R/W
0
0
13
Speed Selection
0 = 10 Mbps
R
0
0
12
Auto-Negotiation Enabled
1 = Enabled
0 = Disabled
R/W
0
0
11
Power Down
1 = Power down
0 = Normal operation
(This bit is mirrored in PHY Control bit 4)
R/W
0
0
10
Isolate
1 = Electrically isolate PHY from MII
0 = Normal operation
R/W
1
1
9
Restart Auto-Negotiation
1 = Restart Auto-Negotiation
0 = Normal operation
** Self Clearing
R/W
0
0
8
Duplex Mode
1 = Full-Duplex (for test purposes only)
0 = Half-Duplex
R/W
0
0
7
Collision Test
0 = Disable COL test signal
R/W
0
0
6:0
Reserved
Write as 0, Ignore Read
R/W
0
0



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