XR16C864

áç APRIL 2004 XR16C864 2.97V TO 5.5V QUAD UART WITH 128-BYTE FIFO REV. 2.0.1 GENERAL DESCRIPTION The XR16C8641 (864) is an enhanced quad Universal Asynchronous Receiver and Transmitter (UART) each with 128 bytes of transmit and receive FIFOs, transmit and receive FIFO counters and trigger levels, automatic hardware and software flow control, automatic RS-485 half-duplex direction control and data rates of up to 2 Mbps. Each UART has a set of registers that provide the user with operating status and control, receiver error indications, and modem serial interface controls. System interrupts may be tailored to meet design requirements. An internal loopback capability allows onboard diagnostics. The 864 is available in the 100pin QFP package. The XR16C864 offers faster channel status access by providing separate outputs for TXRDY and RXRDY, offer separate Infrared TX outputs and a separate clock input for channel C (CHCCLK). The XR16C864 is compatible with the industry standard ST16C554/554D, ST16C654/654D and XR16C854/854D. NOTE: 1 Covered by U.S. Patent #5,649,122 and #5,949,787. FEATURES Added feature in devices with top mark date code of "F2 YYWW" and newer: s 5 volt tolerant inputs 2.97 to 5.5 Volt Operation Pin-to-pin compatible with the industry standard ST16C554 and ST16C654 and TI’s TL16C554N and TL16C754BFN Intel or Motorola Data Bus Interface select Four independent UART channels s s s s s s s s s Register Set Compatible to 16C550 Data rates of up to 2 Mb...