KR970024590A - I / O port control device - Google Patents
I / O port control device Download PDFInfo
- Publication number
- KR970024590A KR970024590A KR1019950034954A KR19950034954A KR970024590A KR 970024590 A KR970024590 A KR 970024590A KR 1019950034954 A KR1019950034954 A KR 1019950034954A KR 19950034954 A KR19950034954 A KR 19950034954A KR 970024590 A KR970024590 A KR 970024590A
- Authority
- KR
- South Korea
- Prior art keywords
- digital
- input
- port
- analog
- output
- Prior art date
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- Microcomputers (AREA)
Abstract
본 발명은 디바이스의 입출력포트의 제어장치에 관한 것으로, 디바이스 내부의 아날로그 입력단자, 디지탈 입력단자, 및 디지탈 출력단자; 아나로그신호를 입력하거나, 디지탈신호를 입출력하기 위한 입출력겸용 포트; 포트의 입력경로를 통하여 입력되는 신호를 디지탈 입력단자로 입력시키기 위한 디지탈입력버퍼수단; 디지탈출력단자의 신호를 포트의 출력경로를 통하여 출력시키기 위한 디지탈출력버퍼수단; 포트를 통하여 아날로그신호를 아날로그입력단자로 입력시키기 위한 아날로그모드, 또는 포트와 디지탈 입출력단자 사이의 디지탈신호의 입출력을 위한 디지탈모드를 설정하기 위한 모드설정수단; 및 모드설정수단에 의하여 설정된 동작모드에 따라 포트와 디바이스 단자간의 입출력경로를 절환하기 위한 모드절환수단을 포함한다. 본 발명에 의하면 모드레지스터를 이용하여 아나로그전용 입력포트를 아나로그/디지탈 입출력겸용 포트로 사용할 수 있으므로 디바이스의 핀 수를 효율적으로 줄일 수 있다.The present invention relates to a control device for an input / output port of a device, comprising: an analog input terminal, a digital input terminal, and a digital output terminal inside the device; An input / output port for inputting an analog signal or inputting / outputting a digital signal; Digital input buffer means for inputting a signal input through an input path of a port to a digital input terminal; Digital output buffer means for outputting a signal of the digital output terminal through an output path of the port; Mode setting means for setting an analog mode for inputting an analog signal to the analog input terminal through the port, or a digital mode for inputting / outputting the digital signal between the port and the digital input / output terminal; And mode switching means for switching the input / output path between the port and the device terminal in accordance with the operation mode set by the mode setting means. According to the present invention, an analog-only input port can be used as an analog / digital input / output port using a mode register, so that the pin count of the device can be efficiently reduced.
Description
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음As this is a public information case, the full text was not included.
제1도는 본 발명에 의한 입출력겸용 포트를 제어하기 위한 장치의 구성블럭도.1 is a block diagram of an apparatus for controlling an input / output port according to the present invention.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019950034954A KR970024590A (en) | 1995-10-11 | 1995-10-11 | I / O port control device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019950034954A KR970024590A (en) | 1995-10-11 | 1995-10-11 | I / O port control device |
Publications (1)
Publication Number | Publication Date |
---|---|
KR970024590A true KR970024590A (en) | 1997-05-30 |
Family
ID=66583687
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1019950034954A KR970024590A (en) | 1995-10-11 | 1995-10-11 | I / O port control device |
Country Status (1)
Country | Link |
---|---|
KR (1) | KR970024590A (en) |
-
1995
- 1995-10-11 KR KR1019950034954A patent/KR970024590A/en not_active Application Discontinuation
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
WITN | Withdrawal due to no request for examination |