Ethernet; Gigabit Ethernet - CompuLab UCM-iMX93 Reference Manual

4.4

Ethernet

4.4.1

Gigabit Ethernet

UCM-iMX93 incorporates an optional ("E" configuration option) full-featured 10/100/1000
Ethernet interface implemented with Realtek RTL8211E GbE PHY.
The following main features are supported:

10/100/1000 BASE-T IEEE 802.3 compliant

IEEE 802.3u compliant Auto-Negotiation

Supports all IEEE 1588 frames - inside the MAC

Automatic channel swap (ACS)

Automatic MDI/MDIX crossover

Automatic polarity correction

Activity and speed indicator LED controls
The table below summarizes the GbE interface signals.
Table 12
Signal Name
ETH0_LED_ACT
ETH0_LINK-LED_10_100
ETH0_LINK-LED_1000
ETH0_MDI0N
ETH0_MDI0P
ETH0_MDI1N
ETH0_MDI1P
ETH0_MDI2N
ETH0_MDI2P
ETH0_MDI3N
ETH0_MDI3P
Revised May 2023
GbE Interface Signals
Pin # Type
P2-83
P2-86
P2-75
P2-73
P2-74
P2-80
P2-78
P2-81
P2-79
P2-85
P2-84
UCM-iMX93 Reference Guide
Description
Active High, activity LED driver.
3.3V signal, PHY strap
Active High, link, any speed
LED driver. 3.3V signal
Active High, link, any speed , blinking on
transmit or receive
PHY strap
AIO Negative part of 100ohm diff-pair 0
AIO Positive part of 100ohm diff-pair 0
AIO Negative part of 100ohm diff-pair 1
AIO Positive part of 100ohm diff-pair 1
AIO Negative part of 100ohm diff-pair 2
AIO Positive part of 100ohm diff-pair 2
AIO Negative part of 100ohm diff-pair 3
AIO Positive part of 100ohm diff-pair 3
Peripheral Interfaces
Availability
With 'E' option
With 'E' option
With 'E' option
With 'E' option
With 'E' option
With 'E' option
With 'E' option
With 'E' option
With 'E' option
With 'E' option
With 'E' option
16