XR17V354 HIGH PERFORMANCE QUAD PCI-EXPRESS UART APRIL 2015 REV. 1.0.4 FEATURES GENERAL DESCRIPTION Single 3.3V power supply 1 The XR17V354 (V354) is a single chip 4-channel PCI Express (PCIe) UART (Universal Asynchronous Internal buck regulator for 1.2V core Receiver and Transmitter), optimized for higher PCIe 2.0 Gen 1 compliant performance and lower power. The V354 serves as a single lane PCIe bridge to 4 independent enhanced x1 Link, dual simplex, 2.5 Gbps in each direction 16550 compatible UARTs. The V354 is compliant to Expansion bus interface PCIe 2.0 Gen 1 (2.5 GT/s). EEPROM interface for configuration In addition to the UART channels, the V354 has 16 multi-purpose I/Os (MPIOs), a 16-bit general purpose Data read/write 32-bit operation counter/timer and a global interrupt status register to Global interrupt status register for all four UARTs optimize interrupt servicing. Up to 31.25 Mbps serial data rate Each UART of the V354 has many enhanced features such as the 256-bytes TX and RX FIFOs, 16 multi-purpose inputs/outputs (MPIOs) programmable Fractional Baud Rate Generator, 16-bit general purpose timer/counter Automatic Hardware or Software Flow Control, Auto RS-485 Half-Duplex Direction Control, programmable Sleep mode with wake-up Indicator TX and RX FIFO Trigger Levels, TX and RX FIFO Four independent UART channels controlled with Level Counters, infrared mode, and data rates up to 16550 compatible register Set 31.25 Mbps. The V354 is available in a 176-pin FPBGA package (13 x 13 mm). 256-byte TX and RX FIFOs Programmable TX and RX Trigger Levels NOTE 1: Covered by U.S. Patents 5,649,122, 6,754,839, TX/RX FIFO Level Counters 6,865,626 and 6,947,999 Fractional baud rate generator APPLICATIONS Automatic RTS/CTS or DTR/DSR hardware flow control with programmable hysteresis Next generation Point-of-Sale Systems Automatic Xon/Xoff software flow control Remote Access Servers RS-485 half duplex direction control output with programmable turn-around delay Storage Network Management Multi-drop with Auto Address Detection Factory Automation and Process Control Infrared (IrDA 1.1) data encoder/decoder Multi-port RS-232/RS-422/RS-485 Cards Software compatible to XR17C15x, XR17D15x, XR17V25x PCI UARTs FIGURE 1. BLOCK DIAGRAM OF THE XR17V354 Configuration TX+ UAUAUA RTRTRT Ch Ch Ch aaannn nnn eeelll 000 T X 3:0 Space T X 7:0 B uck R egulator TX- Registers 256-6644-- bbbytyytte Tee TX TXX FFIFIIFFOFOO R X 3:0 RX+ UUUARTARTART RX 7:0 RX- IRIRIR ReReRegggsss TXTTXX & & & RRXRXX EEENDENDENDECCC R T S 3:0 CLK+ CLK- 256-b yte R X FIF O BRBRBRGGG 64-64- byte R X FIFO 125 M H z C lo ck DTR 3:0 PCIe CLKREQ P C I Lo cal C T S 3 :0 Interface PERST UA RT Ch an n el 1 Bus UA RT Ch an n el 2 Interface D S R 3 :0 EN485 UAUA RTRT Ch Ch aann nn eell 23 ENIR DCD 3:0 GGG lllobaobaoballl EECK CCConfonfonfiiigurgurguraaatttiiiononon Configuration EEDI RRR egegegiiistststererersss Space UA RT Ch an n el 3 RI 3:0 EEEEEEPROPROPRO MMM Registers EEDO UA RT Ch an n el 5 IIInnnttterererfffaceaceace EECS UA RT Ch an n el 6 Multi-purpose MPIO 15:0 D 7:0 Inputs/O utputs UA RT Ch an n el 7 SEL - purpose CLK 161616---bbbiiittt Expansion Inputs/O utputs TiTiTimmm eeerrr///CCCountountounteeerrr In terface IN T MODE C rystal O sc/B u ffer PRES TMTM RRCCKK Exar Corporation 48720 Kato Road, Fremont CA, 94538 (510) 668-7000 FAX (510) 668-7017 www.exar.com XR17V354 HIGH PERFORMANCE QUAD PCI-EXPRESS UART REV. 1.0.4 FIGURE 2. 176-FPBGA PINOUT A1 Corner 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 A B C D E F G H J K L M N P R Transparent Top View 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 NC NC NC GND NC NC DSR2 GND RTS2 TMRCK TEST2 GND LX LX NC A NC NC NC NC NC NC CD2 DTR2 RX2 ENIR TEST1 GND VCC33 VCC33 VCC33 B MPIO0 NC NC NC NC NC RI2 CTS2 TX2 EN485 FB GND VCC33 ENABLE D0 C MPIO2 MPIO1 NC GND VCC33 GND VCC12 GND VCC33 GND VCC12 GND PWRGD INT D2 D MPIO5 MPIO4 MPIO3 VCC12 VCC33 D1 D3 D4 E GND TEST0 MPIO6 GND GND D5 D6 D7 F RX+ RX- GND CLK+ VCC12 SEL CLK MODE G GND GND REXT CLK- GND RI1 PRES GND H TX+ TX- GND GND VCC33 DTR1 DSR1 CD1 J GND VCC12 VCC33 VCC12 GND RTS1 RX1 CTS1 K CLKREQ PERST MPIO7 GND VCC12 CD0 RI0 TX1 L GND MPIO8 MPIO11 MPIO14 TMS GND VCC33 GND VCC12 GND NC EEDO RX0 DSR0 GND M MPIO9 MPIO12 MPIO15 TRST TX3 CTS3 CD3 RI3 NC NC NC NC TX0 CTS0 DTR0 N MPIO10 MPIO13 TCK TDO RTS3 DTR3 NC NC NC NC NC NC EECK EEDI RTS0 P NC RESET TDI GND RX3 DSR3 NC GND NC NC NC GND NC EECS NC R ORDERING INFORMATION PART NUMBER PACKAGE OPERATING TEMPERATURE RANGE XR17V354IB176-F 176-FPBGA -40C to +85C 2