Maxim Integrated 78M6631 Evaluation Board - Manual (Page 15)

UM_6631_077 78M6631 Evaluation Board User Manual
Rev 1 15
J33 Optional 5VDC External Supply
The 78M6631 Evaluation Board is powered through the USB port (5VDC), however in case the USB port
is not connected, the evaluation board can be powered using an external 5VDC power supply, through
the connector J33.
Table 6: J33 Optional 5VDC External Supply
Position Signal Description
1 USB5V Isolated 5VDC Supply
2 ISOGND Isolated Ground
3 USBGND Isolated Ground
J24 Digital I/O Connection
The 78M6631 has several available general purpose digital I/O pins. The following tables show the
connection and use of these I/O’s in the 78M6631 Evaluation Board.
Table 7: J24 Digital I/O Connector
Position Signal Description
1 V3P3 3.3VDC Supply
2 DIO29 General Purpose Digital I/O
3 DIO30 General Purpose Digital I/O
4 DIO45 General Purpose Digital I/O
5 DIO47 General Purpose Digital I/O
6 DIO51 General Purpose Digital I/O
7 DIO53 General Purpose Digital I/O
8 DIO55 General Purpose Digital I/O
9 GND Ground
TP1, TP2, TP3 Digital I/O Connections
The 78M6631 provides these additional general purpose digital I/O pins. The following tables show the
connection and use of these I/O’s in the 78M6631 Evaluation Board.
Table 8: TP1 Digital I/O Connector
Position Signal Description
1 V3P3 3.3VDC Supply
2 DIO8 General Purpose Digital I/O
Table 9: TP2 Digital I/O Connector
Position Signal Description
1 V3P3 3.3VDC Supply
2 DIO9 General Purpose Digital I/O
Table 10: TP3 Digital I/O Connector
Position Signal Description
1 V3P3 3.3VDC Supply
2 DIO6 General Purpose Digital I/O