Datasheet

 2016-2017 Microchip Technology Inc. DS00002117F-page 45
KSZ9031RNX
2.0.1 CLK125_EN
Status
Override strap-in for CLK125_EN
1 = CLK125_EN strap-in is enabled
0 = CLK125_EN strap-in is disabled
RW Set by CLK125_EN
strapping pin.
See the Strap-In
Options -
KSZ9031RNX
section for details.
2.0.0 Reserved Reserved RW 0
MMD Address 2h, Register 1h – Strap Status
2.1.15:8 Reserved Reserved RO 0000_0000
2.1.7 LED_MODE
Strap-In
Status
Strap to
1 = Single-LED mode
0 = Tri-color dual-LED mode
RO Set by LED_MODE
strapping pin.
See the Strap-In
Options -
KSZ9031RNX
section for details.
2.1.6 Reserved Reserved RO 0
2.1.5 CLK125_EN
Strap-In
Status
Strap to
1 = CLK125_EN strap-in is enabled
0 = CLK125_EN strap-in is disabled
RO Set by CLK125_EN
strapping pin.
See the Strap-In
Options -
KSZ9031RNX
section for details.
2.1.4:3 Reserved Reserved RO 00
2.1.2:0 PHYAD[2:0]
Strap-In
Value
Strap-in value for PHY address
Bits [4:3] of PHY address are always set to ‘00’.
RO Set by PHYAD[2:0]
strapping pin.
See the Strap-In
Options -
KSZ9031RNX
section for details.
MMD Address 2h, Register 2h – Operation Mode Strap Override
2.2.15 RGMII All
Capabilities
Override
1 = Override strap-in for RGMII to advertise all
capabilities
RW
Set by MODE[3:0]
strapping pin.
See the Strap-In
Options -
KSZ9031RNX
section for details.
2.2.14 RGMII No
1000BT_HD
Override
1 = Override strap-in for RGMII to advertise all
capabilities except 1000BASE-T half-duplex
RW
2.2.13 RGMII
1000BT_H/
FD Only
Override
1 = Override strap-in for RGMII to advertise
1000BASE-T full- and half-duplex only
RW
2.2.12 RGMII
1000BT_FD
Only Over-
ride
1 = Override strap-in for RGMII to advertise
1000BASE-T full-duplex only
RW
2.2.11 Reserved Reserved RW 0
2.2.10 PME_N2
Output
Enable
For INT_N/PME_N2 (Pin 38),
1 = Enable PME output
0 = Disable PME output
This bit works in conjunction with MMD Address
2h, Reg. 10h, Bits [15:14] to define the output for
Pin 38.
RW 0
TABLE 4-6: MMD REGISTER DESCRIPTIONS (CONTINUED)
Address Name Description
Mode
Note 4-1
Default