FS32K142BHTXVLLTR datasheet(75/100 Pages) NXP

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MII2

MII1

MII4

MII3

Valid data

RXCLK (input)

RXD[n:0]

RXDV

RXER

Figure 25. MII receive diagram

MII7

MII8

Valid data

MII6

MII5

TXCLK (input)

TXD[n:0]

TXEN

TXER

Figure 26. 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 50. RMII signal switching specifications

Symbol

Description

Min.

Max.

Unit

—

RMII input clock RMII_CLK Frequency

—

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

—

RMII4

RMII_CLK to RXD[1:0], CRS_DV, RXER hold

—

Table continues on the next page...

Communication modules

S32K1xx Data Sheet, Rev. 12, 02/2020

NXP Semiconductors

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