CL-PS7110-VC-A View Datasheet(PDF) - Cirrus Logic
Part Name
Description
MFG CO.
'CL-PS7110-VC-A' PDF : 82 Pages View PDF
CL-PS7110
Low-Power System-on-a-Chip
3.2.3 PCDR — Port C Data Register
Values written to this 8-bit read/write register are output on the Port C pins if the corresponding data direc-
tion bits are set low (port output). Values read from this register reflect the external state of Port C, not
necessarily the value written to it. All bits are cleared by a system reset.
3.2.4 PDDR — Port D Data Register
Values written to this 8-bit read/write register are output on the Port D pins if the corresponding data direc-
tion bits are set low (port output). Values read from this register reflect the external state of Port C, not
necessarily the value written to it. All bits are cleared by a system reset.
3.2.5 PADDR — Port A Data Direction Register
Bits set in this 8-bit read/write register select the corresponding pin in Port A to become an output; clearing
a bit sets the pin to input. All bits are cleared by a system reset so that Port A is input by default.
3.2.6 PBDDR — Port B Data Direction Register
Bits set in this 8-bit read/write register select the corresponding pin in Port B to become an output; clearing
a bit sets the pin to input. All bits are cleared by a system reset so that Port A is input by default.
3.2.7 PCDDR — Port C Data Direction Register
Bits cleared in this 8-bit read/write register select the corresponding pin in Port C to become an output;
setting a bit sets the pin to input. All bits are cleared by a system reset so that Port C is output by default.
3.2.8 PDDDR — Port D Data Direction Register
Bits cleared in this 8-bit read/write register select the corresponding pin in Port D to become an output;
setting a bit sets the pin to input. All bits are cleared by a system reset so that Port D is output by default.
3.2.9 PEDR — Port E Data Register
Values written to this 4-bit read/write register are output on Port E pins if the corresponding data direction
bits are set high (port output). Values read from this register reflect the external state of Port E, not nec-
essarily the value written to it. All bits are cleared by a system reset.
3.2.10 PEDDR — Port E Data Direction Register
Bits set in this 4-bit read/write register select the corresponding pin in Port E to become an output; clearing
a bit sets the pin to input. All bits are cleared by a system reset so that Port E is input by default.
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PROGRAMMING INTERFACE
May 1997
DATA BOOK v1.5
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