Datasheet

MII2 MII1
MII4MII3
Valid data
Valid data
Valid data
RXCLK (input)
RXD[n:0]
RXDV
RXER
Figure 24. MII receive diagram
MII7MII8
Valid data
Valid data
Valid data
MII6 MII5
TXCLK (input)
TXD[n:0]
TXEN
TXER
Figure 25. MII transmit signal diagram
The following table describes the RMII 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.
Table 33. RMII signal switching specifications
Symbol Description Min. Max. Unit
— RMII input clock RMII_CLK Frequency — 50 MHz
RMII1, RMII5 RMII_CLK pulse width high 35% 65% RMII_CLK
period
RMII2, RMII6 RMII_CLK pulse width low 35% 65% RMII_CLK
period
RMII3 RXD[1:0], CRS_DV, RXER to RMII_CLK setup 4 — ns
RMII4 RMII_CLK to RXD[1:0], CRS_DV, RXER hold 2 — ns
Table continues on the next page...
Communication modules
S32K1xx Data Sheet, Rev. 4, 06/2017
52
Preliminary
NXP Semiconductors