DP83865 Datasheet, PDF (25/86 Pages) National Semiconductor (TI) – DP83865 Gig PHYTER V 10/100/1000 Ethernet Physical Layer

2.0 Register Block (Continued)
Table 7. Auto-Negotiation Advertisement Register (ANAR) address 0x04
Bit
Bit Name
Default
Description
8
100BASE-TX
STRAP[1], RW 100BASE-TX Full Duplex Support:
Full Duplex
1 = 100BASE-TX Full Duplex is supported by the local device.
0 = 100BASE-TX Full Duplex not supported.
The default value of this bit is determined by the combination of
the Duplex Enable and Speed[1:0] strap pins during reset/power-
on IF Auto-Negotiation is enabled.
The advertised speed is determined by the Speed[1:0]:
Speed[1]
Speed[0]
Speeds Enabled
0
0
= 1000B-T, 100B-TX, 10B-T
0
1
= 1000B-T, 100B-TX
1
0
= 1000B-T
1
1
= 1000B-T, 10B-T
The advertised duplex mode is determined by Duplex Mode:
0 = Half Duplex
1 = Full Duplex
7
100BASE-TX
STRAP[1], RW 100BASE-TX (Half Duplex) Support:
(Half Duplex)
1 = 100BASE-TX (Half Duplex) is supported by the local device.
0 = 100BASE-TX (Half Duplex) not supported.
(The default value of this bit is determined by the combination of
the Duplex Enable and Speed[1:0] strap pins during reset/power-
on IF Auto-Negotiation is enabled. See bit 8 for details.)
6
10BASE-T
STRAP[1], RW 10BASE-T Full Duplex Support:
Full Duplex
1 = 10BASE-T Full Duplex is supported.
0 = 10BASE-T Full Duplex is not supported.
(The default value of this bit is determined by the combination of
the Duplex Enable and Speed[1:0] strap pins during reset/power-
on IF Auto-Negotiation is enabled. See bit 8 for details.)
5
10BASE-T
STRAP[1], RW 10BASE-T (Half Duplex) Support:
(Half Duplex)
1 = 10BASE-T (Half Duplex) is supported by the local device.
0 = 10BASE-T (Half Duplex) is not supported.
(The default value of this bit is determined by the combination of
the Duplex Enable and Speed[1:0] strap pins during reset/power-
on IF Auto-Negotiation is enabled. See bit 8 for details.)
4:0
PSB[4:0]
5’b<0_0001>, P Protocol Selection Bits:
These bits contain the binary encoded protocol selector support-
ed by this port. <00001> indicates that this device supports IEEE
802.3.
This register contains the advertised abilities of this device as they will be transmitted to its link partner during Auto-Negoti-
ation.
25
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