pericom semiconductor corp. www.pericom.com pci ? , pcie ? and pci express ? are registered trademarks of the pci sig ? ( www.pcisig.org ) page 1 of 1 4/27/2016 rev 1. 1 product: pci ? quad uart i/o bridge part numbers: pi7c8 954 product description the pi7c8954 is a pci ? quad uart (universal asynchronous receiver-transmitters) i/o bridge. it is specifically designed to meet various system requirements of high performance and lead (pb) -free. the bridge can be used in a wide range of applications such as remote access servers, automation, process control, instrumentation, pos, atm and multi-port rs232/rs422/rs485 cards. the pi7c8954 provides standard pci ? connection, and it is fully compliant with 32 -bit pci bus 2.3 specifications. the bridge supports four high performance uarts, each of which supports baud rate up to 15 mbps in asynchronous mode. the uarts support in-band and out-band auto flow control, arbitrary trigger level, i/o mapping and memory mapping , irda (infrared data association) encoder/decoder, 8 general purpose i/o and 16-bit timer counter. the pi7c8954 is fully software compatible with 16c550 type device drivers and can be configured to fit the requirements of rs232, rs422 and 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 by eeprom data, such as sub-vendor and sub-system id. industry specifications compliance pci specification, revision 2.3 compliance features four high performance 950 -class uarts universal pci bus buffers C auto sense 3.3v or 5v operation fully 16c550 software compatible uarts 128 -byte fifo for each transmitter and receiver baud rate up to 15 mbps in asynchronous mode flexible clock prescaler from 4 to 46 data transfer in byte, word and double-word data read/write burst operation 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 global interrupt status and readable fifo levels to facilitate implementation of efficient device drivers detection of bad data in the receiver fifo data framing size including 5, 6, 7 , 8 and 9 bits infrared (irda 1.0/1.1) data encoder/decoder auto rs-485 half-duplex output with control polarity selector eight general purpose inputs/outputs a general purpose 16-bit timer/counter hardware reconfiguration through eeprom operations via i/o or memory mapping sleep mode with automatic wake- up dual power operation (3.3v or 5.0v for pci i/o and 1.8v-5.0v for uart i/o) power dissipation : 150 mw typical in normal mode industrial temperature range - 40 o to 85 o package: 20x 20 mm, 1 44 - pin lqfp, w/0.5 mm pin pitch - pb free and 100% green. software support microsoft tm windows 2003/xp/vista/windows embedded/windows 8/windows 8.1/windows 10 32/64 bit microsoft tm windows ce 6.0 linux 2.6, redhat 6.5 and above applications remote access servers network / storage management factory automation and process control instrumentation multi-port rs-232/ rs-422/ rs-485 cards point- of -sa le systems (pos) industrial control (ipc) gaming machines building automation embedded systems pi7c8954 block diagram order information part number package pb - free & green temperature pi7c8954 a fh e 1 44 l qfp yes - 40 o c to 85 o c pi7c8954 a evb board evaluation board for pi7c8954 a figure 1 . pi 7 c 8958 block diagram pci local bus interface crystal osc/buffer tx & rx uart regs uart - 0 ir 1.0/ 1.1 endec tx0,rx0,dtr0# dsr0#, rts0# device global ctl . registers 128 byte tx fifo 128 byte rx fifo brg uart - 1 uart - 2 uart - 3 cts0#,cd0#,ri0# tx3,rx3,dtr3# dsr3#, rts3# cts3#,cd3#,ri3# 16 - bit timer / counter xtal1 xtal2 tmrck rst# ad[31:0] cbe[3:0]# frame# irdy# trdy# devsel# stop# lqfp-144 pin general purpose i/o gpio0-gpio7 eeprom interface configuration space registers clk int# idsel# perr# serr# par eeck eedi eedo eecs 16-0006
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