IC PCIE-TO-UART BRIDGE 128LQFP

The PI7C9X7954 is a PCI Express Quad UART (Universal Asynchronous Receiver-Transmitters) I/O Bridge. It is specifically designed to meet the latest system requirements of high performance, lead (Pb) -free and reduced package sizes. The bridge can be used in a wide range of applications such as Remote Access Servers, Automation, Process Control, Instrumentation, POS, ATM and Multi-portRS232/RS422/RS485 Cards. The PI7C9X7954 provides onex1 PCIe (dual simplex 2.5 Gbps) uplink port, and it is fully compliant with PCI express 1.1 and PCI power management 1.2 specifications. The bridge supports four high performance UARTs, each of which supports Baud rate up to 15 Mbps in asynchronous mode. The UARTs supporting-band and out-band auto flow control, arbitrary trigger I/Omapping and memory mapping. The PI7C9X7954 is fully software compatible with 16C550-type device drivers and can be configured to fit the requirements of RS232, RS422and RS485 applications. The EEPROM interface is provided for system implementation convenience. Some registers can be pre-programmed via hardware pin settings to facilitate system initialization. For programming flexibility, all of the default configuration registers can be overwritten byEEPROM data, such as sub-vendor and sub-system ID.

• Support 4 high performance 16C950 UART in single chip
• Fully software compatible with 16C550-type device drivers
• 128-byte transmit and receive FIFO
• Flexible clock pre-scaler from 4 to 46
• Automated in-band flow control using programmable Xon/ Xoff in both directions
• Automated out-of-band flow control using CTS#/ RTS# and/or DSR#/ DTR#
• Arbitrary trigger levels for receiver and transmitter
• FIFO interrupts and automatic in-band and out-band flow control
• Data framing sizes: 5, 6, 7, 8 and 9
• Configurable using non-volatile configuration memory (EEPROM)
• Global Interrupt Status and readable FIFO levels to facilitate implementation of efficient device drivers.
• Operation via IO or memory mapping
• Detection of bad data in the receive FIFO
• Baud rate up to 15 Mbps in asynchronous mode.
• Supports up to 256-byte maximum payload size
• 1.8 and 3.3V operation
• Power dissipation: 0.8 W typical in normal mode
• Industrial Temperature Range -40° to 85°
• Package: 14x14mm, 128-pin LQFP, Pb free and 100% Green