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参数资料
| 型号： | DC-ANT-E-24DT-10 |
| 厂商： | Digi International |
| 文件页数： | 20/42页 |
| 文件大小： | 530K |
| 描述： | CORD EXT 30CM W/RP-SMA CONN (10) |
| 标准包装： | 1 |
| 附件类型： | 延长线 |
| 适用于相关产品： | 双极天线 |
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GP IO
20
Di g i C o n n e c t S P H a r d w a r e R e f e r e n c e
GPIO Registers
Two registers, named PORTA and PORTC, govern the 16 GPIO pins. Each register is
responsible for eight pins, and each GPIO pin uses the following four bits to completely
describe its behavior:
Mode (CMODE)
Direction (CDIR)
Special function (CSF). This is only applicable to PORTC.
Data value
The first three bits describe the functionality of the GPIO pin. The data bit provides the
current value of the pin when read and allows control of the value of an output pin when
written.
In order to configure a pin as either a GPIO input or GPIO output, the corresponding bit
positions in the appropriate register must be configured according to the information in the
following table:
Since each register controls 8 GPIO pins, it is safest to read the full 32 bit register, modify
the bits corresponding to the pin, and then write the full 32 bits back. In this way, the
behavior of other GPIO pins will be preserved.
For more information regarding the format and programming of the GPIO registers, see the
NS7520 Hardware Reference.
GPIO Configuration
Input
Output
CMODE = 0
CDIR = 0
CSF = 0
CMODE = 0
CDIR = 1
CSF = 0
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相关代理商/技术参数 |
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| DC-ANT-E-24DT-25 | 功能描述:CORD EXT 30CM W/RP-SMA CONN (25) RoHS:是 类别:RF/IF 和 RFID >> RF配件 系列:- 标准包装:1 系列:* |
| DC-ANT-E-24DT-50 | 功能描述:CORD EXT 30CM W/RP-SMA CONN (50) RoHS:是 类别:RF/IF 和 RFID >> RF配件 系列:- 标准包装:1 系列:* |
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