A x e l H a r d w a r e M a n u a l
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7
Peripheral interfaces
AXEL modules implement a number of peripheral interfaces
through the J1, J2 and J3 connectors. The following notes apply
to those interfaces:
●
Some interfaces/signals are available only with/without
certain configuration options of the AXEL module. Each
signal’s availability is noted in the “Notes” column on the
table of each interface.
●
The peripherals described in the following sections
represent the default configuration for the AXEL SOM,
which match with the features provided by the
electronics implemented on the module.
The signals for each interface are described in the related
tables. The following notes summarize the column headers for
these tables:
●
“Pin name” – The symbolic name of each signal
●
“Conn. Pin” – The pin number on the module connectors
●
“Function” – Signal description
●
“Notes” – This column summarizes configuration
requirements and recommendations for each signal.
7.1
Notes on pin assignment
For further information, please refer to section 5.7
“Multiplexing“.
7.2
Gigabit Ethernet
On-board Ethernet PHY (Micrel KSZ9031RNX) provides
interface signals required to implement the 10/100/1000 Mbps
Ethernet port. The transceiver is connected to the triple speed
Ethernet MAC (ENET module) through RGMII interface.
The following table describes the interface signals:
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