xr21v1414 Exar Corporation, xr21v1414 Datasheet - Page 5

• Manufacturer Part Number: xr21v1414
• Description: 4-ch Full-speed Usb Uart
• Manufacturer: Exar Corporation

REV. 1.0.0
Pin Description
UART Channel C Signals
GPIOB2/DSRB#
GPIOC2/DSRC#
GPIOC3/DTRC#
GPIOC4/CTSC#
GPIOC5/RTSC#
GPIOB3/DTRB#
GPIOB4/CTSB#
GPIOB5/RTSB#
GPIOC1/CDC#
GPIOC0/RIC#
N
RXC
TXC
AME
48-QFN
P
13
12
11
10
23
22
29
28
27
26
25
24
IN
#
T
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
YPE
O
I
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.
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.
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.
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.
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.
UART Channel C Transmit Data or IR Transmit Data.
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.
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.
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.
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.
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.
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
D
ESCRIPTION
4-CH FULL-SPEED USB UART
XR21V1414