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DSP56303 датащи(PDF) 276 Page - Freescale Semiconductor, Inc |
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DSP56303 датащи(HTML) 276 Page - Freescale Semiconductor, Inc |
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276 / 292 page ![]() DSP56303 User’s Manual, Rev. 2 B-32 Freescale Semiconductor Programming Reference Figure B-23. Port C Registers (PCRC, PRRC, PDRC) Application: Date: Programmer: Sheet 2 of 4 GPIO 23 65 4321 0 PCC5 PCC4 PCC3 PCC2 PCC1 PCC0 Port C Control Register (PCRC) X:$FFFFBF Read/Write Reset = $000000 *0 *= Reserved, Program as 0 *0 PCn = 1 → Port Pin configured as ESSI PCn = 0 → Port Pin configured as GPIO Port C (ESSI0) 23 65 4321 0 PRC5 PRC4 PRC3 PRC2 PRC1 PRC0 Port C Direction Register (PRRC) X:$FFFFBE Read/Write Reset = $000000 *0 *0 PDCn = 1 → Port Pin is Output PDCn = 0 → Port Pin is Input 23 65 4321 0 PDC5 PDC4 PDC3 PDC2 PDC1 PDC0 Port C GPIO Data Register (PDRC) X:$FFFFBD Read/Write Reset = $000000 *0 *0 if port pin n is GPIO input, then PDn reflects the value on port pin n if port pin n is GPIO output, then value written to PDn is reflected on port pin n |
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