I347-AT4 Datasheet, PDF (95/148 Pages) Intel Corporation – Intel® Ethernet Network Connection I347-AT4 Datasheet

Programmer’s Visible State—I347-AT4
Bits
7:0
Field
RXD[7:0]
Mode
RO
HW Rst SW Rst
0x00
0x00
RX Data
Description
4.1.32 MAC Specific Control Register 2 - Page 2, Register 21
Bits
Field
15
14
13:12
11:7
6
5:4
3
Reserved
Copper Line
Loopback
Reserved
Reserved
Reserved
Reserved
Block Carrier
Extension Bit
2:0
Default MAC
interface speed
Mode
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
HW Rst SW Rst
Description
0x0
0x0
0x1
0x00
0x1
0x0
0x0
0x6
0x0
0x0
Update
0x00
Update
Retain
Retain
Update
0
1 = Enable Loopback of MDI to MDI
0 = Normal Operation
1
00000
1
0
1 = Enable Block Carrier Extension
0 = Disable Block Carrier Extension
Changes to these bits are disruptive to the normal operation;
therefore, any changes to these registers must be followed
by software reset to take effect.
MAC Interface Speed during Link down while Auto-
Negotiation is enabled.
Bit Speed
0XX = Reserved
100 = 10 Mbps
101 = 100 Mbps
110 = 1000 Mbps
111 = Reserved
4.1.33 LED[3:0] Function Control Register - Page 3, Register 16
Bits
Field
15:12 LED[3] Control
Mode
R/W
HW Rst SW Rst
Description
If 16_3.11:10 is set to 11 then 16_3.15:12 has no effect
0000 = On - Reserved, Off - Else
0001 = On - Link, Blink - Activity, Off - No Link
0010 = On - Link, Blink - Receive, Off - No Link
0011 = On - Activity, Off - No Activity
0100 = Blink - Activity, Off - No Activity
0x1
Retain
0101 = Reserved
0110 = On - 10 Mb/s or 1000 Mb/s Master, Off - Else
0111 = On - Full-Duplex, Off - Half-Duplex
1000 = Force Off
1001 = Force On
1010 = Force Hi-Z
1011 = Force Blink
11xx = Reserved
85