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Configuring CP210x port pins

Posted: 25 Sep 2008     Print Version  Bookmark and Share

Keywords:pin configurability  port pins  external circuitry  UART/Modem  General Purpose Input/Output 

The devices discussed in this application note have added pin configurability for improved connectivity. These added configuration options are accessed through the USB interface using a dynamic link library.

This document details configuration options for the CP210x device port pins, which are used to connect to external circuitry. These pins fall into three types of interface pins. First, the UART/Modem interface pins consist of the signals RI, DCD, DTR, DSR, TXD, RXD, RTS, and CTS. These signals are used for UART communication and the associated handshaking.

The second type of interface pin is for General Purpose Input/Output (GPIO). This type consists of all signals named GPIO_x, where x is a number. These signals are available for any user-defined function. The final type of interface pin is for power control and consists of Suspend and /Suspend signals. These signals are used to gate power consumption of external circuitry for bus-powered USB products.

View the PDF document for more information.

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