Data Sheet

Ethernet Controller I210 — Programming Interface
582
8.27.5.1 Fiber Control Register - Page 26, Register 16
8.27.5.2 Fiber Control Register - Page 26, Register 21
8.27.5.3 PRBS Control - Page 26, Register 23
Bits Field Mode HW Rst SW Rst Description
15 Fiber Reset R/W 0x0 SC
Fiber Software Reset.
Affects page 1. Writing a 0x1 to this bit causes the PHY state
machines to be reset. When the reset operation completes, this bit
is cleared to 0x0 automatically. The reset occurs immediately.
1b = PHY reset.
0b = Normal operation.
14 Loopback R/W Retain
The latest event that occurs between the register write and pin
control determines the loopback. When loopback is activated, the
transmitter data presented on TXD of the internal bus is looped
back to RXD of the internal bus.
1b = Enable loopback.
0b = Disable loopback.
13:12 Reserved R/W 0x0 SC Always 0x0.
11:10 Power Down R/W 0x0
The latest event that occurs between the register write and pin
control determines the register value.
00b = Total power up.
01b = Power down everything except wire activity detection circuit.
1xb = Total power down.
9:0 Reserved RO
Always
0x0
Always
0x0
Always 0x0.
Bits Field Mode HW Rst SW Rst Description
15:0
Receive Error
Count
RO, LH 0x0 Retain
Counter reaches its maximum count at 0xFFFF and does not roll
over. Both false carrier and symbol errors are reported.
Bits Field Mode HW Rst SW Rst Description
15:8 Reserved R/W 0x0 Retain Set to 0x0.
7
Invert Checker
Polarity
R/W 0x0 Retain
0 = Normal.
1 = Invert.
6
Invert Generator
Polarity
R/W 0x0 Retain
0 = Normal.
1 = Invert.
5 PRBS Lock R/W 0x0 Retain
0 = Counter free runs.
1 = Do not start counting until PRBS locks first.
4 Clear Counter R/W, SC 0x0 0x0
0 = Normal.
1 = Clear counter.