Document
PRELIMINARY
JULY 2009
XR17V354
REV. P1.0.2
HIGH PERFORMANCE QUAD PCI-EXPRESS UART
GENERAL 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 compatible UARTs. The V354 is compliant 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 compliant • 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 compatible 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 (IrDA 1.1) data encoder/decoder
APPLICATIONS
• Next generation Point-of-Sale Systems • Remote Access Servers • Storage Network Management • Factory Automation and Process Control www.DataSheet4U.com • Multi-port RS-232/RS-422/RS-485 Cards
■ ■
• Software compatible to XR17C15x, XR17D15x,
XR17V25x PCI UARTs FIGURE 1. BLOCK DIAGRAM OF THE XR17V354
C o n f ig u r a t io n S pace R e g is t e r s
TX+ TXRX+ RXCLK+ CLKCLKREQ# PERST# EN485# E N IR # EECK EEDI EEDO EECS
D [ 7 :0 ]
B u c k R e g u la to r
U AR T C hannel 0
UART R egs BRG 2 65 46 - - b y t e T X F IF O
T TX X & & R RX X
T TX X[ [3 7: :0 0] ] R X [3 :0 ] R X [ 7 :0 ] R T S # [3 :0 ] D T R # [ 3 :0 ] C T S # [3 :0 ] D S R # [3 :0 ] D C D # [3 :0 ]
IR ENDEC
1 2 5 M H z C lo c k
2 65 46 --b by ytte e R RX X F F IF IF O O
P C Ie PC I Local In t e r f a c e Bus In te r fa c e
G lo b a l C o n fig u r a tio n R e g is te r s
U AR T C hannel 1 U AR T C hannel 2 3 U AR T C hannel 2
C o n f ig u r a t io n SP pR ac eM EE O R e g is t e r s
In te r fa c e
U AR T C hannel 3 U AR T C hannel 5 U AR T C hannel 6 M u lti- p u r p o s e In pu s /O ua tp UA R tT Ch nu nt es l 7
R I# [ 3 : 0 ]
M P IO [ 1 5 : 0 ]
SEL CLK IN T MODE PRES
E x p a n s io n In te r f a c e
1 6 - b it T im e r /C o u n te r
- p u rp o s e In p u ts /O u t p u t s C r y s ta l O s c /B u ff e r TM RCK
Exar Corporation 48720 Kato Road, Fremont CA, 94538 • (510) 668-7000 • FAX (510) 668-7017 • www.exar.com
XR17V354
PRELIMINARY
REV. P1.0.2
HIGH PERFORMANCE QUAD PCI-EXPRESS UART FIGURE 2. 176-FPBGA PINOUT
A1 Corner
1 A B C D E F G H J K L M N P R 2 3 4 5 6 7 8 9 10 11 12 13 14 15
Transparent Top View
1 A B C D
NC NC MPIO0 MPIO2
2
NC NC NC MPIO1 MPIO4 TEST0 RXGND TXVCC12 PERST# MPIO8 MPIO12 MPIO13 RESET#
3
NC NC NC NC MPIO3 MPIO6 GND REXT GND VCC33 MPIO7 MPIO11 MPIO15 TCK TDI
4
GND NC NC GND VCC12 GND CLK+ CLKGND VCC12 GND MPIO14 TRST TDO GND
5
NC NC NC VCC33
6
NC NC NC GND
7
DSR2# CD2# RI2# VCC12
8
GND DTR2# CTS2# GND
9
RTS2# RX2 TX2 VCC33
10
TMRCK ENIR# EN485# GND
11
TEST2 TEST1 FB VCC12
12
GND GND GND GND VCC33 GND VCC12 GND VCC33 GND VCC12
13
LX VCC33 VCC33 PWRGD D1 D5 SEL RI1# DTR1# RTS1# CD0# RX0 TX0 EECK NC
14
LX VCC33 ENABLE INT D3 D6 CLK PRES DSR1# RX1 RI0# DSR0# CTS0# EEDI EECS
15
NC VCC33 D0 D2 D4 D7 MODE GND CD1# CTS1# TX1 GND DTR0# RTS0# NC
MPIO5 E www.DataSheet4U.com GND F
G H J K L M N P R
RX+ GND TX+ GND CLKREQ# GND MPIO9 MPIO10 NC
TMS TX3 RTS3# RX3
GND CTS3# DTR3# DSR3#
VCC33 CD3# NC NC
GND RI3# NC GND
VCC12 NC NC NC
GND NC NC NC
NC NC NC NC
EEDO NC NC GND
ORDERING INFORMATION
PART NUMBER XR17V354IB176-F PACKAGE 176-FPBGA OPERATING TEMPERATURE RANGE -40°C to +85°C DEVICE STATUS In Development
2
PRELIMINARY
REV. P1.0.2
XR17V354
HIGH PERFORMANCE QUAD PCI-EXPRESS UART
PIN DESCRIPTIONS
NAME PCIe SIGNALS CLK+ CLKTX+ TXRX+ RXCLKREQ# PERST# REXT G4 H4 J1 J2 G1 G2 L1 L2 H3 I I O O I I O I PCIe reference clock input. PCIe differential TX outputs PCIe dif.