XR17V352 HIGH PERFORMANCE DUAL PCI EXPRESS UART OCTOBER 2020 REV. 1.0.6 FEATURES GENERAL DESCRIPTION Single 3.3V power supply 1 The XR17V352 is a single chip 2-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 XR17V352 serves as a single lane PCIe bridge to 2 independent x1 Link, dual simplex, 2.5 Gbps in each direction enhanced 16550 compatible UARTs. The XR17V352 EEPROM interface for configuration is compliant to PCIe 2.0 Gen 1 (2.5 GT/s). Data read/write 32-bit operation In addition to the UART channels, the XR17V352 has 16 multi-purpose I/Os (MPIOs), a 16-bit general Global interrupt status register for both UARTs purpose counter/timer and a global interrupt status Up to 31.25 Mbps serial data rate register to optimize interrupt servicing. 16 multi-purpose inputs/outputs (MPIOs) Each UART of the XR17V352 has many enhanced features such as the 256-bytes TX and RX FIFOs, 16-bit general purpose timer/counter programmable Fractional Baud Rate Generator, Sleep mode with wake-up Indicator Automatic Hardware or Software Flow Control, Auto RS-485 Half-Duplex Direction Control, programmable Two independent UART channels controlled with TX and RX FIFO Trigger Levels, TX and RX FIFO 16550 compatible register Set Level Counters, infrared mode, and data rates up to 256-byte TX and RX FIFOs 31.25 Mbps. The XR17V352 is available in a 113-pin Programmable TX and RX Trigger Levels FPBGA package (9 x 9 mm). TX/RX FIFO Level Counters NOTE 1: Covered by U.S. Patents 5,649,122, 6,754,839, Fractional baud rate generator 6,865,626 and 6,947,999 Automatic RTS/CTS or DTR/DSR hardware flow control with programmable hysteresis APPLICATIONS Automatic Xon/Xoff software flow control Next generation Point-of-Sale Systems RS-485 half duplex direction control output with programmable turn-around delay Remote Access Servers Multi-drop with Auto Address Detection Storage Network Management Infrared (IrDA 1.1) data encoder/decoder Factory Automation and Process Control Software compatible to XR17C15x, XR17D15x, XR17V25x PCI UARTs Multi-port RS-232/RS-422/RS-485 Cards FIGURE 1. BLOCK DIAGRAM OF THE XR17V352 TX+ C o n fig ura tio n T X 1 :0 TX- S pace UAUARRTT ChChaannnneell 00 Buck Regulator UART Channel 0 T X 7 :0 RX+ R egisters 6464-- bbyytte e TTXX FFIIFFOO RX- UARTUART RX 1:0 256-byte TX FIFO R X 7 :0 CLK+ UARTReReggss IRIR TXTX && RRXX ENDEC Regs CLK- ENDEIR C TX & RX R TS 1 :0 ENDEC BRGBRG 6464-- byte R X FIFO 125 M H z C lo ck CLKREQ PC Ie BRG 256-byte RX FIFO RST DTR 1:0 P C I L ocal Interface Bus UAR T Channel 2 C T S 1:0 EN485 Interface UART C hannel 1 ENIR GlGlGlooobbbaaalll 256-byte TX FIFO DSR 1:0 UART EECK CCC ooo nnn fffigigig uuurrraaa tttioioio nnn C o n fig ura tio n Regs RRReeegigigistststererersss IR EEDI S pace TX & R X EEPROEEPROEEPRO MMM ENDEC R egisters DCD 1:0 UAR T Channel 5 EEDO InInIn teteterfarfarfaccceee EECS BRG 256-byte RX FIFO UAR T Channel 6 Multi-purpose R I 1:0 Inputs/O utputs MPIO 15:0 - 161616-b- biitt Inputs/Outputs TiTmimeer/rC/Couountnteerr C rystal O sc /B u ffer TMTM RRCC KK 1XR17V352 HIGH PERFORMANCE DUAL PCI EXPRESS UART REV. 1.0.6 FIGURE 2. 113-FPBGA PINOUT A1A1 CCoorrnneerr 1 2 3 4 5 6 7 8 9 10 11 A B C D E F G H J K L Transparent Top View 1 2 3 4 5 6 7 8 9 10 11 NC MPIO0 NC GND NC TMRCK TEST2 GND LX LX NC A MPIO3 MPIO2 NC NC NC ENIR TEST1 GND VCC33 VCC33 VCC33 B MPIO6 MPIO4 MPIO1 NC NC EN485 FB GND VCC33 ENABLE NC C GND TEST0 MPIO5 GND VCC33 GND VCC12 GND PWRGD TEST3 GND D RX+ RX- GND CLK+ GND VCC33 TEST5 TEST4 RI1 E GND GND REXT CLK- GND CD1 DSR1 DTR1 F TX+ TX- GND GND VCC12 RTS1 RX1 CTS1 G GND VCC12 VCC33 GND VCC12 GND VCC33 GND RI0 TX1 GND H CLKREQ PERST MPIO9 MPIO13 RESET TMS EECK EEDI RX0 DSR0 CD0 J MPIO7 MPIO8 MPIO11 MPIO14 NC TCK TDO EECS TX0 CTS0 DTR0 K NC MPIO10 MPIO12 GND MPIO15 TRST TDI GND EEDO RTS0 NC L (1) ORDERING INFORMATION PART NUMBER OPERATING TEMPERATURE RANGE PACKAGE PACKAGING METHOD LEAD-FREE (2) XR17V352IB113-F -40C to +85C 113-fpBGA Tray Yes XR17V352IB-0A-EVB XR17V352 Evaluation Board NOTES: 1. Refer to www.maxlinear.com/XR17V352 for most up-to-date Ordering Information. 2. Visit www.maxlinear.com for additional information on Environmental Rating. 2