参数资料
型号: PC87393F-VJG
厂商: NATIONAL SEMICONDUCTOR CORP
元件分类: 外设及接口
英文描述: 100-Pin LPC SuperI/O Devices for Portable Applications
中文描述: MULTIFUNCTION PERIPHERAL, PQFP100
封装: TQFP-100
文件页数: 103/148页
文件大小: 1733K
代理商: PC87393F-VJG
2.0 Device Architecture and Configuration (Continued)
58
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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 congured in the selected port:
000, 001,... 111: Binary value of the pin number, 0, 1,... 7 respectively (default=0)
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