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UG-1308
DIRECT 3.3 V POWER VIA THE AVDD AND DVDD
CONNECTORS
To measure the
ADuCM355
3.3 V directly to the AVDD and DVDD connectors.
To power the EVAL-ADuCM355QSPZ in this case, apply a
3.3 V supply directly to Pin 1 on the AVDD connector and to
Pin 1 on the DVDD connector.
Jumper Setup with Direct 3.3 V Connection
The jumper settings required when using a 3.3 V connection
are as follows:
1.
Insert JP32, JP34, JP43, and JP44.
2.
Remove JP42.
For additional information, see Figure 6.
POWER VIA USB FROM 8-PIN DEBUG
CONNECTOR (P27)
If using the older USB-SWD/UART and debug interface, the
ADuCM355
can also be powered from the USB. The UART to
USB interface is handled by the USB-SWD/UART-EMUZ board.
Jumper Setup with Power via USB
Close JP35, JP40, JP42, JP43, and JP44 when using power via
the USB (see Figure 5).
current consumption (I
), connect
DD
Figure 6. Power DVDD and AVDD Directly via Power Header Blocks
EVAL-ADuCM355QSPZ
Figure 5. Power via 8-Pin P27 Debug Connector
POWER VIA EXTERNAL 5 V SUPPLY TO 2-PIN
CONNECTOR (P37)
The last power supply option is to connect an external 5 V
supply to the 2-pin P37 connector. This 5 V supply is the input to
the
ADP7158
LDO regulator that has a 3.3 V output voltage. Do
not connect the microUSB cable to P4. This option is a debug or
test option only.
Rev. A | Page 6 of 24
Evaluation Board
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