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XR21V1410IL16-F Datasheet(PDF) 3 Page - Exar Corporation |
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XR21V1410IL16-F Datasheet(HTML) 3 Page - Exar Corporation |
3 / 28 page XR21V1410 3 REV. 1.3.0 1-CH FULL-SPEED USB UART PIN DESCRIPTIONS Pin Description NAME 16-QFN PIN # TYPE DESCRIPTION UART Signals RX 10 I UART Channel A Receive Data or IR Receive Data. This pin has an internal pull-up resistor. Internal pull-up resistor is not disabled during suspend mode. TX 9 O UART Channel A Transmit Data or IR Transmit Data. GPIO0/RI#/RWK# 8 I/O General purpose I/O or UART Ring-Indicator input (active low) or Remote Wakeup input. See “Section 1.5.11, Remote Wakeup” on page 10. This pin has an internal pull-up resistor which is disabled during suspend mode. If using this GPIO as an input, an external pull-up resistor is required to minimize the device power consumption in the suspend mode. GPIO1/CD# 7 I/O General purpose I/O or UART Carrier-Detect input (active low). This pin has an internal pull-up resistor which is disabled during suspend mode. If using this GPIO as an input, an external pull-up resistor is required to minimize the device power consumption in the suspend mode. GPIO2/DSR# 6 I/O General purpose I/O or UART Data-Set-Ready input (active low). See ”Section 1.5.5, Automatic DTR/DSR Hardware Flow Control” on page 9. This pin has an internal pull-up resistor which is disabled during suspend mode. If using this GPIO as an input, an external pull-up resistor is required to minimize the device power consumption in the suspend mode. GPIO3/DTR# 5 I/O General purpose I/O or UART Data-Terminal-Ready output (active low). See ”Section 1.5.5, Automatic DTR/DSR Hardware Flow Con- trol” on page 9. This pin has an internal pull-up resistor which is disabled during suspend mode. If using this GPIO as an input, an external pull-up resistor is required to minimize the device power consumption in the suspend mode. GPIO4/CTS# 4 I/O General purpose I/O or UART Clear-to-Send input (active low). See ”Section 1.5.4, Automatic RTS/CTS Hardware Flow Control” on page 8. This pin has an internal pull-up resistor which is disabled during suspend mode. If using this GPIO as an input, an external pull-up resistor is required to minimize the device power consumption in the suspend mode. GPIO5/RTS# 3 I/O General purpose I/O or UART Request-to-Send output (active low). See ”Section 1.5.4, Automatic RTS/CTS Hardware Flow Con- trol” on page 8. This pin has an internal pull-up resistor which is disabled during suspend mode. If using this GPIO as an input, an external pull-up resistor is required to minimize the device power consumption in the suspend mode. |
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