NXP 28L198 8路UART是一个单芯片的CMOS-LSI通信器件，它提供8路全双工异步通道，具有16字节FIFO，使用用户定义的Xon/Xoff字符可以实现自动带内（in-band）流控制，唤醒模式下可以进行地址识别。所有主机和OCTART之间的通信都使用同步总线接口。它由NXP 1.0微米的CMOS技术制造而成，结合了低成本、高密度和低功耗的优点。-NXP 28L198 8-channel UART is a single-chip CMOS-LSI communications device that provides eight full-duplex asynchronous channel, with 16-byte FIFO, with user-defined Xon/Xoff characters can achieve automatic in-band (in-band) flow control, wake-up mode can address recognition. All communication between the host and OCTART use synchronous bus interface. It consists of NXP 1.0 micron CMOS technology made of a combination of low cost, high density and low power consumption.