PNI SENtral MandM - Manual (Page 6)

PNI Sensor Corporation Doc #1020129 revE
SENtral M&M Technical Datasheet Page 5

SENtral acts as a slave on a host system I
2
C bus. This does not need to be a dedicated
bus, although it is shown this way in the schematic.

The SCLM and SDAM lines can be used to monitor SENtral’s I
2
C sensor bus, but
this is not necessary. These lines are optional and may be left unconnected.

If the host will poll SENtral, rather than running in an interrupt-driven manner, it is
not necessary to connect GPIO[6], the host interrupt line, to the host system.

GPIO[4] is intended for future use and currently serves no purpose. This can be left
unconnected.