Serial line - Revision history

Jnc: /* Further reading */ +Comparison of Data Transmission Techniques

2024-07-27T13:41:34Z

Further reading: +Comparison of Data Transmission Techniques

← Older revision		Revision as of 13:41, 27 July 2024
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	* [[EIA RS-232 serial line interface‎]]		* [[EIA RS-232 serial line interface‎]]
	* [[EIA RS-422 serial line interface‎]]		* [[EIA RS-422 serial line interface‎]]
			* [[Parallel interface]]

			==Further reading==

			* ''Comparison of Data Transmission Techniques'', [[MicroNote]] #021

	[[Category: Communication Basics]]		[[Category: Communication Basics]]
	[[Category: Serial Lines]]		[[Category: Serial Lines]]

Jnc: New cat, +/* See also */

2022-05-23T13:12:35Z

New cat, +See also

← Older revision		Revision as of 13:12, 23 May 2022
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	* [[synchronous serial line]]s, where each character starts immediately after the previous one, and is therefore not self-clocking		* [[synchronous serial line]]s, where each character starts immediately after the previous one, and is therefore not self-clocking

	Both serial line [[protocol]]s requires two signal levels: '''idle''' ('''mark''', high [[voltage]]), and '''asserted''' ('''space''', low voltage). (The polarity is a legacy from telegraphy, where the line was held high in order to show that the line was not broken, and that the transmitter was functional.)		Both serial line [[protocol]]s requires two signal levels: '''idle''' ('''mark''', often high [[voltage]]), and '''asserted''' ('''space''', often low voltage). (The polarity is a legacy from telegraphy, where the line was held high in order to show that the line was not broken, and that the transmitter was functional.)

	If the line is held in the 'asserted' state for longer than a character time, this is called a '''break''' condition, and it can be detected by the receiver and signalled to the user specially. This is often used to [[interrupt]] the computer on the other end of the line.		If the line is held in the 'asserted' state for longer than a character time, this is called a '''break''' condition, and it can be detected by the receiver and signalled to the user specially. This is often used to [[interrupt]] the computer on the other end of the line.

	{{semi-stub}}		{{semi-stub}}

			==See also==

			* [[20mA current loop serial line interface‎]]
			* [[EIA RS-232 serial line interface‎]]
			* [[EIA RS-422 serial line interface‎]]

	[[Category: Communication Basics]]		[[Category: Communication Basics]]
			[[Category: Serial Lines]]

Jnc: +break

2021-08-05T14:30:39Z

+break

← Older revision		Revision as of 14:30, 5 August 2021
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	A '''serial line''' is a means of transmitting data in [[bit]] serial fashion, often over a [[communication link]] such as a telephone line. There are two principal forms:		A '''serial line''' is a means of transmitting data in [[bit]] [[serial]] fashion, often over a [[communication link]] such as a telephone line. There are two principal forms:

	* [[asynchronous serial line]]s, in which the format is self-[[clock]]ing (i.e. the start location of each character can be inferred from the data stream), and		* [[asynchronous serial line]]s, in which the format is self-[[clock]]ing (i.e. the start location of each character can be inferred from the data stream), and
	* [[synchronous serial line]]s, where each character starts immediately after the previous one, and is therefore not self-clocking		* [[synchronous serial line]]s, where each character starts immediately after the previous one, and is therefore not self-clocking

	Both serial line [[protocol]]s requires two signal levels: idle (mark, high), and asserted (space, low). (The polarity is a legacy from telegraphy, where the line was held high in order to show that the line was not broken, and that the transmitter was functional.)		Both serial line [[protocol]]s requires two signal levels: '''idle''' ('''mark''', high [[voltage]]), and '''asserted''' ('''space''', low voltage). (The polarity is a legacy from telegraphy, where the line was held high in order to show that the line was not broken, and that the transmitter was functional.)

			If the line is held in the 'asserted' state for longer than a character time, this is called a '''break''' condition, and it can be detected by the receiver and signalled to the user specially. This is often used to [[interrupt]] the computer on the other end of the line.

	{{semi-stub}}		{{semi-stub}}

	[[Category: Communication Basics]]		[[Category: Communication Basics]]

Jnc: move mark/space here

2020-03-21T14:11:55Z

move mark/space here

← Older revision		Revision as of 14:11, 21 March 2020
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	* [[asynchronous serial line]]s, in which the format is self-[[clock]]ing (i.e. the start location of each character can be inferred from the data stream), and		* [[asynchronous serial line]]s, in which the format is self-[[clock]]ing (i.e. the start location of each character can be inferred from the data stream), and
	* [[synchronous serial line]]s, where each character starts immediately after the previous one, and is therefore not self-clocking		* [[synchronous serial line]]s, where each character starts immediately after the previous one, and is therefore not self-clocking

			Both serial line [[protocol]]s requires two signal levels: idle (mark, high), and asserted (space, low). (The polarity is a legacy from telegraphy, where the line was held high in order to show that the line was not broken, and that the transmitter was functional.)

	{{semi-stub}}		{{semi-stub}}

	[[Category: Communication Basics]]		[[Category: Communication Basics]]

Jnc: better car

2018-12-13T18:56:15Z

better car

← Older revision		Revision as of 18:56, 13 December 2018
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	{{semi-stub}}		{{semi-stub}}

	[[Category: ~~Device Basics‎‎~~]]		[[Category: Communication Basics]]

Jnc: +cat

2018-12-13T04:44:56Z

+cat

← Older revision		Revision as of 04:44, 13 December 2018
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	{{semi-stub}}		{{semi-stub}}

			[[Category: Device Basics‎‎]]

Jnc: Proper cat

2018-10-21T12:42:03Z

Proper cat

← Older revision		Revision as of 12:42, 21 October 2018
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	* [[synchronous serial line]]s, where each character starts immediately after the previous one, and is therefore not self-clocking		* [[synchronous serial line]]s, where each character starts immediately after the previous one, and is therefore not self-clocking

	{{stub}}		{{semi-stub}}

Jnc: Add links

2018-09-12T19:35:02Z

Add links

← Older revision		Revision as of 19:35, 12 September 2018
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	A '''serial line''' is a means of transmitting data in bit serial fashion, often over a communication link such as a telephone line. There are two principal forms:		A '''serial line''' is a means of transmitting data in [[bit]] serial fashion, often over a [[communication link]] such as a telephone line. There are two principal forms:

	* [[asynchronous serial line]]s, in which the format is self-~~clocking~~ (i.e. the start location of each character can be inferred from the data stream), and		* [[asynchronous serial line]]s, in which the format is self-[[clock]]ing (i.e. the start location of each character can be inferred from the data stream), and
	* [[synchronous serial line]]s, where each character starts immediately after the previous one, and is therefore not self-clocking		* [[synchronous serial line]]s, where each character starts immediately after the previous one, and is therefore not self-clocking

	{{stub}}		{{stub}}

Jnc: add 'self-clocking' term

2017-10-15T01:57:52Z

add 'self-clocking' term

← Older revision		Revision as of 01:57, 15 October 2017
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	A '''serial line''' is a means of transmitting data in bit serial fashion, often over a communication link such as a telephone line. There are two principal forms:		A '''serial line''' is a means of transmitting data in bit serial fashion, often over a communication link such as a telephone line. There are two principal forms:

	* [[asynchronous serial line]]s, in which the format is ~~such that~~ the start location of each character can be inferred from the data stream, and		* [[asynchronous serial line]]s, in which the format is self-clocking (i.e. the start location of each character can be inferred from the data stream), and
	* [[synchronous serial line]]s, where each character starts immediately after the previous one.		* [[synchronous serial line]]s, where each character starts immediately after the previous one, and is therefore not self-clocking

	{{stub}}		{{stub}}

Jnc: A start

2017-10-14T01:23:27Z

A start

New page

A '''serial line''' is a means of transmitting data in bit serial fashion, often over a communication link such as a telephone line. There are two principal forms:

* [[asynchronous serial line]]s, in which the format is such that the start location of each character can be inferred from the data stream, and
* [[synchronous serial line]]s, where each character starts immediately after the previous one.

{{stub}}