IMX93CEC datasheet(60/123 Pages) NXP

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Table 64. RGMII signal switching specifications[1],[2],[3],[4]

Symbol

Description

Min.

Max.

Unit

Tcyc

Clock cycle duration

7.2

8.8

TskewT

Data to clock output skew at transmitter

-500

500

TskewR

Data to clock input skew at receiver

2.6

Duty_G

Duty cycle for Gigabit

Duty_T

Duty cycle for 10/100T

[1] The timings assume the following configuration: DSE[5:0] = 001111 and FSEL1[1:0] = 11.

[2] Measured as defined in

EIA/JESD 8-6 1995 with a timing threshold voltage of VDDQ/2.

[3] Output timing valid for maximum external load CL = 15 pF, which is assumed to be a 8 pF load at the end of a 50 ohm, unterminated, 2-inch microstrip trace on

standard FR4 (3.3 pF/inch). For best signal integrity, the series resistance in the transmission line should be matched closely to the selected RDSON of the I/O

pad output driver.

[4] RGMII timing specifications are only valid for 1.8 V nominal I/O pad supply voltage.

RGMII_TXC (at transmitter)

RGMII_TXDn (n = 0 to 3 )

RGMII_TX_CTL

RGMII_TXC (at receiver)

TskewT

TXEN

TXERR

TskewR

Figure 29. RGMII transmit signal timing diagram original

RGMII_RXC (at transmitter)

RGMII_RXDn (n = 0 to 3 )

RGMII_RX_CTL

RGMII_RXC (at receiver)

TskewT

RXDV

RXERR

TskewR

Figure 30. RGMII receive signal timing diagram original

4.12.3 Ethernet Quality-of-Service (QOS) electrical specifications

Ethernet QOS supports the following Time Sensitive Networking (TSN) features:

• 802.1Qbv Enhancements to Scheduling Traffic

NXP Semiconductors

IMX93CEC

i.MX 93 Applications Processors Data Sheet for Commercial Products

IMX93CEC

All information provided in this document is subject to legal disclaimers.

Product data sheet

Rev. 7 — 12 February 2026

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