XR17V354 Datasheet | Exar

DESCRIPTION The XR17V3541 (V354) is a single chip 4-channel PCI Express (PCIe) UART (Universal Asynchronous Receiver and Transmitter), optimized for higher performance and lower power. The V354 serves as a single lane PCIe bridge to 4 indepedent enhanced 16550 patible UARTs. The V354 is pliant to PCIe 2.0 Gen 1 (2.5GT/s). In addition to the UART channels, the V354 has 16 multi-purpose I/Os (MPIOs), a 16-bit general purpose counter/timer and a global interrupt status register to optimize interrupt servicing. Each UART of the V354 has many enhanced features such as the 256-bytes TX and RX FIFOs, programmable Fractional Baud Rate Generator, Automatic Hardware or Software Flow Control, Auto RS-485 Half-Duplex Direction Control, programmable TX and RX FIFO Trigger Levels, TX and RX FIFO Level Counters, infrared mode, and data rates up to 25Mbps. The V354 is available in a 176-pin FPBGA package (13 x 13 mm). NOTE 1: Covered by U.S. Patents #5,649,122, #6,754,839, #6,865,626 and #6,947,999 FEATURES - Single 3.3V power supply - Internal buck regulator for 1.2V core - PCIe 2.0 Gen 1 pliant - x1 Link, dual simplex, 2.5Gbps in each direction - Expansion bus interface - EEPROM interface for configuration - Data read/write burst operation - Global interrupt status register for all four UARTs - Up to 25 Mbps serial data rate - 16 multi-purpose inputs/outputs (MPIOs) - 16-bit general purpose timer/counter - Sleep mode with wake-up Indicator - Four independent UART channels controlled with - - - - - - - - 16550 patible register Set 256-byte TX and RX FIFOs Programmable TX and RX Trigger Levels TX/RX FIFO Level Counters Fractional baud rate generator Automatic RTS/CTS or DTR/DSR hardware flow control with programmable hysteresis Automatic Xon/Xoff software flow control RS-485 half duplex direction control output with programmable turn-around delay Multi-drop with Auto Address Detection Infrared (Ir DA 1.1) data encoder/decoder APPLICATIONS - Next generation Point-of-Sale...