Intel PCI User Manual
Software Developer’s Manual
277
Register Descriptions
13.4.7.1.23
Extended PHY Specific Control Register 2
EPSCON2 (26d; R/W)
NOTE: Not applicable to the 82540EP/EM, 82544GC/EI, 82541xx, or 82547GI/EI.
13.4.7.1.24
Extended PHY Specific Status Register (82544GC/EI Only)
EPSSTAT (27d; R)
13.4.7.1.25
MDI Register 30 Page Select
1
R30PS (29d; WO)
Table 13-47. Extended PHY Specific Control Register 2 Bit Description
Field
Bit(s)
Description
Mode
HW Rst
SW Rst
Fiber Output
Amplitude
Amplitude
2:0
111b = 1.2, 100b = 0.9, 001b = 0.6
110b = 1.1, 011b = 0.8, 000b = 0.5
101b = 1.0, 010b = 0.7
110b = 1.1, 011b = 0.8, 000b = 0.5
101b = 1.0, 010b = 0.7
R/W
100b
Retain
Reserved
3
Reserved. Should be set to 1b.
R/W
1b
1b
Reserved
4
Reserved. Should be set to 0b.
R/W
0b
0b
Fiber Output
Impedance
Impedance
5
1b= 75 ohm.
0b = 50 ohm.
0b = 50 ohm.
R/W
0b
Update
Fiber Input
Impedance
Impedance
6
1b = 75 ohm.
0b = 50 ohm.
0b = 50 ohm.
R/W
0b
Update
Reserved
15:7
Reserved. Should be set to 0b.
R/W
000h
000h
Table 13-48. Extended PHY Specific Status Bit Description
Field
Bit(s)
Description
Mode
HW Rst
SW Rst
MODE[3:0]
27.3:0
MODE[3:0].
RO
MODE[3:0]
Retain
Reserved
27.15:4
Reserved. Should be set to
000000000000b.
000000000000b.
RO
0b
0b
1.
Not applicable to the 82544GC/EI, 82541xx, or 82547GI/EI.
Table 13-49. MDI Register 30 Page Select Bit Description
Field
Bit(s)
Description
Mode
HW Rst
SW Rst
Register 30 Page
Select
Select
15:0
Selects the register accessible via the
“window” at MDI register 30.
“window” at MDI register 30.
R/W
0000h
0000h