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PC87393F Folha de dados(PDF) 58 Page - National Semiconductor (TI) |
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PC87393F Folha de dados(HTML) 58 Page - National Semiconductor (TI) |
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58 / 148 page ![]() 2.0 Device Architecture and Configuration (Continued) 58 www.national.com 2.15.4 GPIO Pin Select Register This register selects the GPIO pin (port number and bit number) to be configured (i.e., which register is accessed via the GPIO Pin Configuration register). It is reset by hardware to 00h. Location: Index F0h Type: R/W Bit 76543210 Name Reserved Port Select Reserved Pin Select Reset 00000000 Bit Description 7-6 Reserved 5-4 Port Select. These bits select the GPIO port to be configured: 00: Port 0 (default) 01, 10, 11: Binary value of port numbers 1-3 respectively. All other values are reserved. 3 Reserved 2-0 Pin Select. These bits select the GPIO pin to be configured in the selected port: 000, 001,... 111: Binary value of the pin number, 0, 1,... 7 respectively (default=0) |
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