AM79C875KI AMD (ADVANCED MICRO DEVICES), AM79C875KI Datasheet - Page 27

• Manufacturer Part Number: AM79C875KI
• Manufacturer: AMD (ADVANCED MICRO DEVICES)

Specifications of AM79C875KI

• Lead Free Status / RoHS Status: Not Compliant

MII Management Status Register (Register 1)
Reg
1
1
1
1
1
1
1
1
1
1
1
1
1
10:7
Bit
15
14
13
12
11
6
5
4
3
2
1
0
100BASE-TX Half
100BASE-TX Full
Auto-Negotiation
Auto-Negotiation
10BASE-T Half
10BASE-T Full
Jabber Detect
MF Preamble
Remote Fault
100BASE-T4
Suppression
Link Status
Reserved
Complete
Capability
Extended
Duplex
Duplex
Duplex
Duplex
Name
Ability
Table 8. MII Management Status Register (Register 1)
Description
1 = 100BASE-T4 able.
0 = Not 100BASE-T4.
1 = 100BASE-TX with full duplex.
0 = No 100BASE-TX full duplex ability.
1 = 100BASE-TX with half duplex.
0 = No 100BASE-TX half-duplex ability.
1 = 10BASE-T with full duplex.
0 = No 10BASE-T full duplex ability.
1 = 10BASE-T with half duplex.
0 = No 10BASE-T half duplex ability.
Ignore when read.
1 = PHY can accept management (mgmt) frames with or
without preamble.
0 = PHY can only accept mgmt frames with preamble.
1 = Auto-Negotiation process completed. Registers 4, 5, 6
are valid after this bit is set.
0 = Auto-Negotiation process not completed.
1 = Remote fault condition detected.
0 = No remote fault.
This bit will remain set until it is cleared by reading register
1 via management interface.
1 = Able to perform Auto-Negotiation function, its value is
determined by ANEGA pin.
0 = Unable to perform Auto-Negotiation function.
1 = Link is established, however, if the NetPHY™ 4LP
device link fails, this bit will be cleared and remain cleared
until register is read via management interface.
0 = Link is down.
1 = Jabber condition detect.
0 = No Jabber condition detected.
1 = Extended register capable. This bit is tied permanently
to one.
Am79C875
RO/LH
RO/LH
RO/LL
Read/
Write
RO
RO
RO
RO
RO
RO
RO
RO
RO
RO
ANEGA pin
DPLX pin
DPLX pin
Default
Set by
Set by
Set by
0
1
1
0
1
0
0
0
0
1
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