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4.0 Register Set
(Continued)
DP83816
4.3.2 Basic Mode Status Register
7
Collision Test
Collision Test:
Default: 0
1 = Collision test enabled
0 = Normal operation
When set, this bit will cause the COL signal to be asserted in response to the assertion of TXEN within
512-bit times. The COL signal will be de-asserted within 4-bit times in response to the de-assertion of
TXEN.
6:0
Reserved
Reserved:
Default: 0, RO
Tag:
BMSR
Size:
16 bits
Hard Reset:
7849h
Offset:
0084h
Access:
Read Only
Bit
Bit Name
Description
15
100BASE-T4
100BASE-T4 Capable:
Default: 0
0 = Device not able to perform 100BASE-T4 mode.
14
100BASE-TX
Full Duplex
100BASE-TX Full Duplex Capable:
Default: 1
1 = Device able to perform 100BASE-TX in full duplex mode
13
100BASE-TX
Half Duplex
100BASE-TX Half Duplex Capable:
Default: 1
1 = Device able to perform 100BASE-TX in half duplex mode.
12
10BASE-T
Full Duplex
10BASE-T Full Duplex Capable:
Default: 1
1 = Device able to perform 10BASE-T in full duplex mode
11
10BASE-T
Half Duplex
10BASE-T Half Duplex Capable:
Default: 1
1 = Device able to perform 10BASE-T in half duplex mode
10:7
Reserved
Reserved:
Write as 0, read as 0
6
Preamble
Suppression
Preamble suppression Capable:
Default: 1
1 = Device able to perform management transaction with preamble suppressed, 32-bits of preamble
needed only once after reset, invalid opcode or invalid turnaround.
0 = Normal management operation
5
Auto-
Negotiation
Complete
Auto-Negotiation Complete:
Default: 0
1 = Auto-Negotiation process complete
0 = Auto-Negotiation process not complete
4
Remote Fault
Remote Fault:
Default: 0/L(H)
1 = Remote Fault condition detected (cleared on read or by reset). Fault criteria: Far End Fault Indication
or notification from Link Partner of Remote Fault.
0 = No remote fault condition detected
3
Auto-
Negotiation
Ability
Auto Configuration Ability:
Default: 1
1 = Device is able to perform Auto-Negotiation
0 = Device is not able to perform Auto-Negotiation
2
Link Status
Link Status:
Default: 0/L(L)
1 = Valid link established (for either 10 or 100 Mb/s operation)
0 = Link not established
The criteria for link validity is implementation specific. The occurrence of a link failure condition will cause
the Link Status bit to clear. Once cleared, this bit may only be set by establishing a good link condition
and a read via the management interface.
1
Jabber Detect
Jabber Detect:
Default: 0/LH
1 = Jabber condition detected
0 = No Jabber
This bit is implemented with a latching function, such that the occurrence of a jabber condition causes it
to set until it is cleared by a read to this register by the management interface or by a reset.
This bit only has meaning in 10 Mb/s mode.
0
Extended
Capability
Extended Capability:
Default: 1
1 = Extended register capabilities
0 = Basic register set capabilities only
Bit
Bit Name
Description
Summary of Contents for DP83816AVNG
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