How does XON XOFF work?

How does XON XOFF work?

Xon/Xoff (sometimes written “X-on/X-off” or “XON/XOFF” and pronounced eks-AWN eks-AWF ) is a protocol for controlling the flow of data between computers and other device s on an asynchronous serial connection. For example, a computer typically sends data to a printer faster than the printer can print.

What is flow control in RS232?

RTS / CTS Flow Control is another flow control mechanism that is part of the RS232 standard. It makes use of two further pins on the RS232 connector, RTS (Request to Send) and CTS (Clear to Send). These two lines allow the receiver and the transmitter to alert each other to their state.

What are XON and XOFF characters?

Alternatively referred to as software flow control, XON/XOFF or XON and XOFF are control characters used in data transmission. XOFF is used by a receiving device as a way to let the transmitting device know it needs to stop transmitting. When the device is ready to recommence, the XON character is sent.

What is a XON?

Xon. A metaphorically postulated person, a God. Those (Man) who retains in purity the controlling fixed center of existence. Individual(s) that operate in the pure state of consciousness.

What is hardware handshaking in RS232?

With RS232 handshaking, RS232 communications only will take place when both ends of the RS232 link are ready. Thus, the RS232 handshake process enables the DTE to request control of the communications link from a related modem and allows the modem to inform the terminal equipment that the control has been acquired.

What is UART flow control?

UART Flow Control is a method for slow and fast devices to communicate with each other over UART without the risk of losing data. Consider the case where two units are communicating over UART. A transmitter T is sending a long stream of bytes to a receiver R.

Where is RS-232 used?

A serial port complying with the RS-232 standard was once a standard feature of many types of computers. Personal computers used them for connections not only to modems, but also to printers, computer mice, data storage, uninterruptible power supplies, and other peripheral devices.

What is ex cob?

Definition of ex-con informal. : a former prisoner.

What does ex com mean?

An abbreviation of executive committee .

Is CTS active high or low?

active low
Both CTS and RTS signals are active low.