xr21v1412 Exar Corporation, xr21v1412 Datasheet - Page 2

• Manufacturer Part Number: xr21v1412
• Description: 2-ch Full-speed Usb Uart
• Manufacturer: Exar Corporation

XR21V1412
2-CH FULL-SPEED USB UART
F
IGURE
3.3V VCC
USBD+
USBD-
GND
SDA
SCL
1. XR21V1412 B
USB Slave
Oscillator
Interface
Interface
LOCK
Internal
48MHz
I
2
C
D
IAGRAM
2
Status and
Status and
Fractional
Fractional
Registers
Registers
Internal
Internal
Control
Control
BRG
BRG
UART Channel B
UART Channel A
Modem IO
Modem IO
128-byte
384-byte
RX FIFO
128-byte
TX FIFO
384-byte
RX FIFO
TX FIFO
GPIOs/
GPIOs/
TXB
RXB
GPIOB5/RTSB#
GPIOB4/CTSB#
GPIOB3/DTRB#
GPIOB2/DSRB#
GPIOB1/CDB#
GPIOB0/RIB#
TXA
RXA
GPIOA5/RTSA#
GPIOA4/CTSA#
GPIOA3/DTRA#
GPIOA2/DSRA#
GPIOA1/CDA#
GPIOA0/RIA#
REV. 1.0.0