rtd cpuModule CMX147786HX, User Manual

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CMX147786HX RTD Embedded Technologies, Inc.
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Digital I/O Register Set
P0.7 P0.6 P0.5 P0.4 P0.3 P0.2 P0.1 P0.0
Port 0 Data register is a read/write bit direction programmable register. A particular bit can be set
to input or output. A read of an input bit returns the value of port 0. A read of an output bit returns
the last value written to Port 0. A write to an output bit sends that value to port zero.
P1.7 P1.6 P1.5 P1.4 P1.3 P1.2 P1.1 P1.0
Port 1 Data register is a read/write byte direction programmable register. A read on this register
when it is programmed to input will read the value at the DIO connector. A write on this register
when it is programmed as output will write the value to the DIO connector. A read on this register
when it is set to output will read the last value sent to the DIO connector.
Multi-Function register is a read/write register whose contents are set by the DIO-Control register.
See the DIO-Control register description for a description of this register.
Port 0 Data I/O address aDI 0
D7 D6 D5 D4 D3 D2 D1 D0
Port 1 data I/O address aDI 1
D7 D6 D5 D4 D3 D2 D1 D0
Multi-Function I/O address aDI 2
D7 D6 D5 D4 D3 D2 D1 D0