D16550 Datasheet - Lattice Semiconductor

D16550 Configurable UART

PIN rst clk datai[7:0] addr[2:0] cs wr rd rclk baudclk si cts dsr dcd ri baudclken rclken baudout datao[7:0] so ddis txrdy rxrdy rts dtr out1 out2 intr RCVR Buffer & RCVR FIFO TYPE input input input input input input input input input input input input input input input input output output output .

www.DataSheet4U.com D16550 Configurable UART with FIFO ver 2.11 OVERVIEW The D16550 is a soft Core of a Universal Asynchronous Receiver/Transmitter (UART) functionally identical to the TL16C550A. The D16550 allows serial transmission in two modes: UART mode and FIFO mode. In FIFO mode internal FIFOs are activated allowing 16 bytes (plus 3 bits of error data per byte in the RCVR FIFO) to be stored in both receive and transmit directions. D16550 performs serial-toparallel conversion on data chara.

D16550 Features

* Software compatible with 16450 and 16550 UARTs Configuration capability Separate configurable BAUD clock line Two modes of operation: UART mode and FIFO mode Majority Voting Logic In the FIFO mode transmitter and receiver are each buffered with 16 byte FIFO to red

D16550_LatticeSemiconductor.pdf