L-827e.A3 phyCORE-i.MX 6UL/ULL Hardware Manual
© PHYTEC Messtecknik GmbH
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11.3.2 MAC Address
In a computer network such as a local area network (LAN), the MAC (Media Access Control) address is a unique
computer hardware number. For a connection to the Internet, a table is used to convert the assigned IP number to
the hardware’s MAC address.
In order to guarantee that the MAC address is unique, all addresses are managed in a central location. Phytec has
acquired a pool of MAC addresses. The MAC address of the phyCORE
‑
i.MX 6UL/ULL is located on the bar code sticker
attached to the module. This number is a 12-digit HEX value.
11.3.3 RMII Interface
The second Ethernet interface of the i.MX 6UL/ULL (ENET2) is brought out as an RMII interface at the
phyCORE
‑
Connector X1 to enable a connection of an external PHY and thus allowing to set up a second Ethernet
interface on a carrier board. Please note that the second Ethernet interface (ENET2) is not available on the
processor type -Y0, -G0, and -G1.
TABLE 20: Location of the ENET2 Interface RMII Signals
Pin #
Signal
ST
Voltage Domain
Description
52
X_ENET2_TX_D0
O
VDD_3V3
ENET2 RMII transmit data 0
53
X_ENET2_TX_D1
O
VDD_3V3
ENET2 RMII transmit data 1
54
X_ENET2_TX_EN
O
VDD_3V3
ENET2 RMII transmit enable
55
X_ENET2_TX_CLK
O
VDD_3V3
ENET2 RMII reference clock
56
X_ENET2_RX_D0
I
VDD_3V3
ENET2 RMII receive data 0
57
X_ENET2_RX_D1
I
VDD_3V3
ENET2 RMII receive data 1
58
X_ENET2_RX_ER
I
VDD_3V3
ENET2 RMII receive error
59
X_ENET2_RX_EN
I
VDD_3V3
ENET2 RMII receive enable
18
X_ENET_MDIO
I/O
VDD_3V3
ENET management data I/O
(MDIO)
19
X_ENET_MDC
O
VDD_3V3
ENET management data clock
(MDC)
11.4 SPI Interface
The Serial Peripheral Interface (SPI) interface is a four-wire, bidirectional serial bus that provides a simple and
efficient method for data exchange among devices. The phyCORE provides one SPI interface on the