Datasheet

KSZ9031RNX
DS00002117F-page 10  2016-2017 Microchip Technology Inc.
25 TX_EN I RGMII mode: RGMII TX_CTL (Transmit Control) input
26 DVDDL P 1.2V digital V
DD
27
RXD3/
MODE3
I/O
RGMII mode: RGMII RD3 (Receive Data 3) output
Config mode: The pull-up/pull-down value is latched as MODE3 during
power-up/reset.
See the Strap-In Options - KSZ9031RNX section for details.
28
RXD2/
MODE2
I/O
RGMII mode: RGMII RD2 (Receive Data 2) output
Config mode: The pull-up/pull-down value is latched as MODE2 during
power-up/reset.
See the Strap-In Options - KSZ9031RNX section for details.
29 VSS GND Digital ground
30 DVDDL P 1.2V digital V
DD
31
RXD1/
MODE1
I/O
RGMII mode: RGMII RD1 (Receive Data 1) output
Config mode: The pull-up/pull-down value is latched as MODE1 during
power-up/reset.
See the Strap-In Options - KSZ9031RNX section for details.
32
RXD0/
MODE0
I/O
RGMII mode: RGMII RD0 (Receive Data 0) output
Config mode: The pull-up/pull-down value is latched as MODE0 during
power-up/reset.
See the Strap-In Options - KSZ9031RNX section for details.
33
RX_DV/
CLK125_EN
I/O
RGMII mode: RGMII RX_CTL (Receive Control) output
Config mode: Latched as CLK125_NDO Output Enable during power-up/
reset.
See the Strap-In Options - KSZ9031RNX section for details.
34 DVDDH P 3.3V, 2.5V, or 1.8V digital V
DD_I/O
35
RX_CLK/
PHYAD2
I/O
RGMII mode: RGMII RXC (Receive Reference Clock) output
Config mode: The pull-up/pull-down value is latched as PHYAD[2] during
power-up/reset.
See the Strap-In Options - KSZ9031RNX section for details.
36 MDC Ipu
Management data clock input
This pin is the input reference clock for MDIO (Pin 37).
37 MDIO Ipu/O
Management data input/output
This pin is synchronous to MDC (Pin 36) and requires an external pull-up
resistor to DVDDH (digital V
DD_I/O
) in a range from 1.0 k to 4.7 k.
38
INT_N/
PME_N2
O
Interrupt output: Programmable interrupt output, with Register 1Bh as the
Interrupt Control/Status register, for programming the interrupt conditions and
reading the interrupt status. Register 1Fh, Bit [14] sets the interrupt output to
active low (default) or active high.
PME_N output: Programmable PME_N output (pin option 2). When asserted
low, this pin signals that a WOL event has occurred.
For Interrupt (when active low) and PME functions, this pin requires an exter-
nal pull-up resistor to DVDDH (digital V
DD_I/O
) in a range from 1.0 k to
4.7 k.
This pin is not an open-drain for all operating modes.
39 DVDDL P 1.2V digital V
DD
40 DVDDH P 3.3V, 2.5V, or 1.8V digital V
DD_I/O
TABLE 2-1: SIGNALS - KSZ9031RNX (CONTINUED)
Pin
Number
Pin
Name
Type
Note
2-1
Description