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Pin
Function
8B
GBE1_MDIO3+
9B
GBE1_MDIO3-
10B
GND_GBE
11B
V_3V3_S0
12B
GBE1_LED1_LINK_ACT
#
13B
GBE1_LED2_LINK1000
#
14B
GBE1_LED0_LINK100#
6.4.1. GBE0
GBE0 port uses the iMX8 M internal Ethernet MAC with external RGMII PHY TI DP83867. The MDIO address of TI
DP83867 is set to 0. The TI DP83867 LED outputs drive the RJ45 integrated LEDs.
Table 10: Left LED Signal Description
Left RJ45 LEDs
Green
Yellow
6.4.2. GBE1
GBE1 port uses an Intel I210/I211 10/100/1000Base-T Ethernet controller connected to iMX8 M PCIe 2 interface. The
I210/I211 SMB IF connects to iMX8 M I2C 2 interface. The I2C 7-bit address is 0x92. The pITX-IMX8M does not
support I210 external NVM. The Intel I210/I211 LED outputs drive the RJ45 integrated LEDs.
Table 11: Right LED Signal Description
Right RJ45 LEDs
Green
Yellow
6.5. USB Connectors (I/O area, J13)
pITX-iMX8M board supports a dual-stacked USB3.0 interface with 5 Gbps speed. The following connections are
available for the USB 3.0:
1x Dual-stacked USB3.0 Type A at rear I/O
1x M.2 B-key half-size connector
Additionally there is a 1x Dual internal USB2.0 header.
Direction
Analog
Analog
Ground
Power
Ground
Ground
Analog
Function
Off = no receive or transmit activities On = receive or transmit activity
Off = no link, 10/100Base-T Link On = 1000Base-T Link
Function
Off = no receive or transmit activities
Blinking = receive or transmit activity
On = link established
Off = no link, 10/100Base-T Link
On = 1000Base-T Link
pITX-iMX8M – Rev. 0.7 Preliminary
Description
RJ45 – 7
RJ45 – 8
Negative post of 2KV
capacitor cable side
Anode Green LED
Cathode Green LED
Cathode Yellow LED
Anode Yellow LED
www.kontron.com
// 32
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