XR21V1414IM-0B-EB

EXAR  XR21V1414IM-0B-EB  评估板, B1414, 4通道, USB UART, 带RS485模式

The is an evaluation board for XR21V1414, an enhanced four channel universal asynchronous receiver and transmitter UART with a USB interface. The USB interface is fully compliant to full speed USB 2.0 specification that supports 12Mbps USB data transfer rate. The USB interface also supports USB suspend, resume and remote wakeup operations. The XR21V1414 operates from an internal 48MHz clock therefore no external crystal/oscillator is required like previous generation UARTs. With the fractional baud rate generator, any baud rate can accurately be generated using the internal 48MHz clock. The large 128byte Tx FIFO and 384byte RX FIFO of the XR21V1414 helps to optimize the overall data throughput for various applications. The automatic transceiver direction control feature simplifies both the hardware and software for half duplex RS 485 applications.