M88 Evaluation Kit User Guide
Before you begin
STO-DEV7227-HB Rev. 2.1
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Before you begin
You will need the following to use the board:
•
Power supply 5V, 3A
–
included
•
Ethernet cables (SFP and fiber if you intend to use optical communication)
–
not included
•
SMA cables
–
not included
•
USB cable
–
included
•
GNSS antenna
–
not included
•
A PC with a terminal program such as TeraTerm or PuTTy
–
not included
Optional devices in case you plan to write and debug your own SW for the M88 and/or configure the
Si5348 of the M88.
•
Silicon Labs'
Trace Adapter
•
Silicon Labs
Developer IDE
•
SiLabs Trace Adapter
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Power
The board only needs a single 5V supply and depending on what add-on boards that are used (some
OCXO can consume considerable amount of current when warming up) we recommend using a power
supply that can deliver 3A.
The board can also be powered by a PoE switch if connected to Port 1. This will supply adequate power
in most cases except for when a large OCXO is used on an add-on board. The M88 Evaluation Kit has
onboard regulators to provide all necessary voltages for the components on the M88 Evaluation Kit
including the M88. There is a green LED indicating 3.3V to the left of the board when seen from the
front panel and another LED indicating if power is supplied by PoE.
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Block diagram
The block diagram below shows the connections the M88 Evaluation Kit and to some extent, for
improved understanding the connections on the M88 module itself. In the picture JS means jumper
select. See section 10.
