XR16L784

áç JUNE 2004 XR16L784 HIGH PERFORMANCE 2.97V TO 5.5V QUAD UART REV. 1.2.0 GENERAL DESCRIPTION The XR16L7841 (784) is a quad Universal Asynchronous Receiver and Transmitter (UART). The device is designed for high bandwidth requirement in communication systems. The global interrupt source register provides a complete interrupt status indication for all 4 channels to speed up interrupt parsing. Each UART has its own 16C550 compatible set of configuration registers, transmit and receive FIFOs of 64 bytes, fully programmable transmit and receive FIFO level triggers, transmit and receive FIFO level counters, automatic RTS/CTS or DTR/ DSR hardware flow control with programmable hysteresis, automatic software (Xon/Xoff) flow control, IrDA (Infrared Data Association) encoder/ decoder, and a 16-bit general purpose timer/counter. NOTE: 1 Covered by U.S. Patents #5,649,122 and #5,949,787 FEATURES APPLICATIONS 2.97V to 5.5V operation with 5V Tolerant Inputs 8-bit Intel or Motorola Data Bus Interface Single Open Drain Interrupt output for all 4 channels Global Interrupt Source Registers for all channels 5G (Fifth Generation) “Flat” Register Set Each UART is Independently Controlled with: 16C550 Compatible Registers 64-byte Transmit and Receive FIFOs Transmit and Receive FIFO Level Counters Programmable TX and RX FIFO Trigger Levels Automatic RTS/CTS or DTR/DSR Flow Control Selectable RTS Flow Control Hysteresis Automatic Xon/Xoff Software Flow Control Automatic RS4...