XR21V1414 Datasheet, PDF (5/26 Pages) Exar Corporation – 4-CH FULL-SPEED USB UART

REV. 1.0.0
Pin Description
NAME
GPIOB2/DSRB#
48-QFN
PIN #
13
GPIOB3/DTRB#
12
GPIOB4/CTSB#
11
GPIOB5/RTSB#
10
UART Channel C Signals
RXC
23
TXC
22
GPIOC0/RIC#
29
GPIOC1/CDC#
28
GPIOC2/DSRC#
27
GPIOC3/DTRC#
26
GPIOC4/CTSC#
25
GPIOC5/RTSC#
24
XR21V1414
4-CH FULL-SPEED USB UART
TYPE
DESCRIPTION
I/O _{General purpose I/O or UART Data-Set-Ready input (active low). This pin}
has an internal pull-up resistor. Internal pull-up resistor is disabled during
suspend mode. If using this GPIO as an input, a pull-up resistor is
required to minimize the power consumption in the suspend mode.
I/O _{General purpose I/O or UART Data-Terminal-Ready output (active low).}
This pin has an internal pull-up resistor. Internal pull-up resistor is disabled
during suspend mode. If using this GPIO as an input, a pull-up resistor is
required to minimize the power consumption in the suspend mode.
I/O _{General purpose I/O or UART Clear-to-Send input (active low). This pin}
has an internal pull-up resistor. Internal pull-up resistor is disabled during
suspend mode. If using this GPIO as an input, a pull-up resistor is
required to minimize the power consumption in the suspend mode.
I/O _{General purpose I/O or UART Request-to-Send output (active low). This}
pin has an internal pull-up resistor. Internal pull-up resistor is disabled dur-
ing suspend mode. If using this GPIO as an input, a pull-up resistor is
required to minimize the power consumption in the suspend mode.
I
UART Channel C Receive Data or IR Receive Data. This pin has an inter-
nal pull-up resistor. Internal pull-up resistor is not disabled during suspend
mode.
O _{UART Channel C Transmit Data or IR Transmit Data.}
I/O _{General purpose I/O or UART Ring-Indicator input (active low). This pin}
has an internal pull-up resistor. Internal pull-up resistor is disabled during
suspend mode. If using this GPIO as an input, a pull-up resistor is
required to minimize the power consumption in the suspend mode.
I/O _{General purpose I/O or UART Carrier-Detect input (active low). This pin}
has an internal pull-up resistor. Internal pull-up resistor is disabled during
suspend mode. If using this GPIO as an input, a pull-up resistor is
required to minimize the power consumption in the suspend mode.
I/O _{General purpose I/O or UART Data-Set-Ready input (active low). This pin}
has an internal pull-up resistor. Internal pull-up resistor is disabled during
suspend mode. If using this GPIO as an input, a pull-up resistor is
required to minimize the power consumption in the suspend mode.
I/O _{General purpose I/O or UART Data-Terminal-Ready output (active low).}
This pin has an internal pull-up resistor. Internal pull-up resistor is disabled
during suspend mode. If using this GPIO as an input, a pull-up resistor is
required to minimize the power consumption in the suspend mode.
I/O _{General purpose I/O or UART Clear-to-Send input (active low). This pin}
has an internal pull-up resistor. Internal pull-up resistor is disabled during
suspend mode. If using this GPIO as an input, a pull-up resistor is
required to minimize the power consumption in the suspend mode.
I/O _{General purpose I/O or UART Request-to-Send output (active low). This}
pin has an internal pull-up resistor. Internal pull-up resistor is disabled dur-
ing suspend mode. If using this GPIO as an input, a pull-up resistor is
required to minimize the power consumption in the suspend mode.
5