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IXF1104 4-Port Gigabit Ethernet Media Access Controller
Datasheet 181
Document Number: 278757
Revision Number: 007
Revision Date: March 25, 2004
12
Auto-Negotiation
Enable
0 = Disable auto-negotiation process
1 = Enable auto-negotiation process
This register bit must be enabled for
1000BASE-T operation.
RO 1
11 Power-Down
0 = Normal operation
1 = Power-down
RO 0
10 Isolate
0 =
1 = Electrically isolate PHY from GMII
RO 0
9
Restart
Auto-Negotiation
0 = Normal operation
1 = Restart auto-negotiation process
RO 0
8 Duplex Mode
0 = Half-duplex mode
1 = Full-duplex mode
RO 1
2
7 Collision Test
0 = Disable COL signal test
1 = Enable COL signal test
This register bit is ignored unless loopback is
enabled (Register bit 0.14 = 1)
RO 0
6
Speed Selection
1000 Mbps
0.6 (Speed<1>) 0.13 (Speed<0>)
00 = 10 Mbps
01 = 100 Mbps
10 = 1000 Mbps (manual mode now allowed)
11 = Reserved
RO 0
2
5:0 Reserved Reserved RO 0
Table 96. PHY Status ($ Port Index + 0x61) (Sheet 1 of 2)
Bit Name Description Type
1
Default
31:16 Reserved Reserved RO 0
15 100BASE-T4
0 = PHY not able to operate in 100BASE-T4
1 = PHY able to operate in 100BASE-T4
RO 0
14
100BASE-X
Full-Duplex
0 = PHY not able to operate in 100BASE-X in full-
duplex mode
1 = PHY able to operate in 100BASE-X in full-
duplex mode
RO 1
13
100BASE-X
Half-Duplex
0 = PHY not able to operate in 100BASE-X in
half-duplex mode
1 = PHY able to operate in 100BASE-X in half-
duplex mode
RO 1
12
10 Mbps
Full-Duplex
0 = PHY not able to operate in 10 Mbps in full-
duplex mode
1 = PHY able to operate in 10 Mbps in full-duplex
mode
RO 1
11
10 Mbps
Half-Duplex
0 = PHY not able to operate in 10 Mbps in half-
duplex mode
1 = PHY able to operate in 10 Mbps in half-
duplex mode
RO 1
1. R = Read Only; RR = Clear on Read; W = Write; R/W = Read/Write
Table 95. PHY Control ($ Port Index + 0x60) (Sheet 2 of 2)
Bit Name Description Type
1
Default
1. RO = Read Only; RR = Clear on Read; W = Write; R/W = Read/Write
2. This register is ignored if auto-negotiation is enabled.