S32K311NHT0MPAST datasheet(104/143 Pages) NXP

104 / 143 page

Figure 52. MII transmit diagram

12.8.3 Ethernet RMII (10/100 Mbps)

The following timing specs are defined at the device I/O pin and must be translated appropriately to arrive at timing specs/

constraints for the physical interface. Measurements are with maximum output load of 25pF, input transition of 1ns and pad

configured with DSE = 1'b1 and SRE = 1'b0. I/O operating voltage ranges from 2.97 V to 3.63 V. Valid pin combinations to be

referred from K3xx*_Use sheet in IOmux.

Table 54. Ethernet RMII (10/100 Mbps)

Symbol

Description

Min

Typ

Max

Unit

Condition

Spec

Number

—

RMII input

clock frequency

(RMII_CLK)

—

MHz

10/100 Mbps

—

RMII1,RMII5

RMII_CLK pulse

width high

—

%RMII_C

LK period

—

RMII2,RMII6

RMII_CLK pulse

width low

—

%RMII_C

LK 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...

NXP Semiconductors

Communication interfaces

S32K3xx Data Sheet, Rev. 9.1, 03/2024

Data Sheet: Technical Data

Preliminary Information for S32K388

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