CMS32L051 User Manual |Chapter 2 Pin Function
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2.3 Registers for controlling port functions
The port function is controlled through the following registers.
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Port Mode Register (PMxx)
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Port Register (Pxx)
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Pull-Up Resistor Selection Register (PUxx)
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Pull-Down Resistor Selection Register (PDxx)
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Port Output Mode Register (POMx)
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Port Mode Control Register (PMCxx)
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Port Set Control Register (PSETxx)
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Port Clear Control Register (PCLRxx)
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Port Output Multiplexing Function Configuration Register (PxxCFG).
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Port Input Multiplexing Function Configuration Register (TI10PCFG, TI11PCFG, TI12PCFG,
TI13PCFG, INTP0PCFG, INTP1PCFG, INTP2PCFG, INTP3PCFG, SDI00PCFG, SCLKI00PCFG,
SS00PCFG, SDI20PCFG, SCLKI20PCFG, SDAA0PCFG, SCLA0PCFG, RXD1PCFG).
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SPI Port Multiplexing Configuration Register (SPIPCFG)
Note: Assigned registers and bits vary from product to product. For the registers and bits assigned by each product, refer to
Table 2-1. The initial value must be set for the unassigned bits.
Table 2-1 Registers assigned to each product PMxx, Pxx, PSETxx, PCLRxx, PUxx, PDxx, POMxx,
PMCxx and their bits (1/2)
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