rtd cpuModules CMA34CR, Руководство пользователя

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58 CMA34CR cpuModule BDM-610000083 Rev L
Digital I/O Register Set
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 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 aDIO connector. A write on this register when it is programmed
as output will write the value to the aDIO connector. A read on this register when it is set to output will read the
last value sent to the aDIO connector.
The 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.
Table 38 Port 0 Data I/O Address EC0h
D7 D6 D5 D4 D3 D2 D1 D0
P0.7 P0.6 P0.5 P0.4 P0.3 P0.2 P0.1 P0.0
Table 39 Port 1 Data I/O Address EC1h
D7 D6 D5 D4 D3 D2 D1 D0
Reserved Reserved Reserved Reserved P1.3 P1.2 P1.1 P1.0
Table 40 Multi-Function I/O Address EC2h
D7 D6 D5 D4 D3 D2 D1 D0