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→Hardware flow control: Fixed a typo Tags: Mobile edit Mobile web edit |
m →Hardware flow control: Fixed typo: 'readyness' → 'readiness' |
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Hardware flow control is typically handled by the DTE or "master end", as it is first raising or asserting its line to command the other side:
* In the case of RTS control flow, DTE sets its RTS, which signals the opposite end (the slave end such as a DCE) to begin monitoring its data input line. When ready for data, the slave end will raise its complementary line, CTS in this example, which signals the master to start sending data, and for the master to begin monitoring the slave's data output line. If either end needs to stop the data, it lowers its respective "data
* For PC-to-modem and similar links, in the case of DTR flow control, DTR/DSR are raised for the entire modem session (say a dialup internet call where DTR is raised to signal the modem to dial, and DSR is raised by the modem when the connection is complete), and RTS/CTS are raised for each block of data.
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