XR21B1411IL-0A-EB Exar Corporation, XR21B1411IL-0A-EB Datasheet - Page 6

• Manufacturer Part Number: XR21B1411IL-0A-EB
• Description: EVAL BOARD UART SR21B1411
• Manufacturer: Exar Corporation

Specifications of XR21B1411IL-0A-EB

• Mfg Application Notes: Board Design Considerations AppNote
• Design Resources: XR21B1411 SP337 Eval Brd Schematic
• Interface Type: RS-232, RS-422, RS-485, USB, UART
• Operating Supply Voltage: 5 V
• Product: Interface Modules
• Silicon Core Number: XR21B1411
• Application Sub Type: UART
• Kit Contents: Board
• Silicon Manufacturer: Exar
• Kit Application Type: Communication & Networking
• For Use With/related Products: XR21B1411
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant
• Other names: 1016-1380

XR21B1411 USER’S MANUAL
WEB CONFIGURATION TOOL USER’S MANUAL
REV. 1.0.0
2.2
Configuring the GPIO Pins in Auto RTS/CTS Flow Control Mode
In Auto RTS/CTS flow control mode, GPIO5/RTS# becomes an output pin and GPIO4/CTS# becomes an input
pin. GPIO5/RTS# can not be changed to an input and, similarly, GPIO4/CTS# can not be changed to an
output. The configuration is shown below.
In this mode, GPIO3-GPIO0 can still be configured as described in
“Section 2.1, Configuring the GPIO pins
in GPIO Mode” on page
1.
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