This section details the power, reset, clocks and debug configuration and is the minimum configuration needed in order to
power on MAC57D5MB.
5.1 Main power supply
MAC57D5MB requires an external power supply voltage of 12 V, minimum 3 A. This allows the EVB to be easily used in a
vehicle if required. The 12 V input is regulated on the EVB using two switching power supplies to provide the required
voltages of 5.0 V, 3.3 V and 1.25 V in all interfaces of the Motherboard and the daughter cards.
Figure 3. Main power supply connectors
For flexibility, there are two power supply inputs, the connector and test points on the EVB which are detailed below:
Table 2. Power Supply Connectors
CONNECTOR
DESCRIPTION
2.1 mm Barrel Connector P6, this connector
should be used to connect the supplied wall-plug
mains adapter.
NOTE: if a replacement or alternative adapter is
used, care must be taken to ensure the
2.1 mm plug uses the correct
polarization as shown.
Two test points PC compact RED/BLACK TP79
and TP76, these test points can be used to
connect a hook wire lead to the EVB, The
polarization of the connectors is clearly marked
on the EVB. Care must be taken to ensure
correct connection.
5.2 Power switch (SW1)
Slide switch SW1 can be used to isolate the power supply input from the EVB voltage regulators if required.
• Moving the slide switch to the left (outward of the EVB) will turn the EVB off.
• Moving the slide switch to the right (inward of the EVB) will turn the EVB on.
Initial configuration
MAC57D5xx Customer Evaluation Boards, Rev. 0, 05/2016
Freescale Semiconductor, Inc.
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