Datasheet

Table 33. RMII signal switching specifications
(continued)
Symbol Description Min. Max. Unit
RMII7 RMII_CLK to TXD[1:0], TXEN invalid 2 — ns
RMII8 RMII_CLK to TXD[1:0], TXEN valid — 15 ns
RMII2 RMII1
RMII4
RMII3
Valid data
Valid data
Valid data
RMII_CLK(input)
RXD[n:0]
CRS_DV
RXER
Figure 26. RMII receive diagram
RMII7RMII8
Valid data
Valid data
RMII6 RMII5
RMII_CLK (input)
TXD[n:0]
TXEN
Figure 27. RMII transmit diagram
The following table describes the MDIO electrical characteristics.
• Measurements are with maximum output load of 25 pF, input transition of 1 ns and
pad configured with fastest slew settings (DSE = 1'b1).
• I/O operating voltage ranges from 2.97 V to 3.6 V
• While doing the mode transition (RUN -> HSRUN or HSRUN -> RUN ), the
interface should be OFF.
• MDIO pin must have external Pull-up.
Table 34. MDIO timing specifications
Symbol Description Min. Max. Unit
— MDC Clock Frequency — 2.5 MHz
Table continues on the next page...
Communication modules
S32K1xx Data Sheet, Rev. 4, 06/2017
NXP Semiconductors
Preliminary
53