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Exar Corporation

XR17V258 Datasheet Preview

XR17V258 Datasheet

66MHZ PCI BUS OCTAL UART

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XR17V258
66MHZ PCI BUS OCTAL UART WITH POWER MANAGEMENT SUPPORT
NOVEMBER 2005
GENERAL DESCRIPTION
The XR17V2581 (V258) is a single chip 8-channel
66MHz PCI (Peripheral Component Interconnect)
UART (Universal Asynchronous Receiver and
Transmitter) solution, optimized for higher
performance and lower power. The V258 device with
its fifth generation register set is designed to meet the
high bandwidth and power management
requirements for multi-serial communication ports for
system administration and management. The 32-bit
66MHz PCI interface is compliant with PCI 3.0 and
PCI power management revision 1.1 specifications.
The device provides an upgrade path for Exar’s
33MHz 5V and Universal PCI UART family of
products in a 144-pin LQFP package.
The V258 consists of eight independent UART
channels, each with set of configuration and
enhanced registers, 64 bytes of Transmit (TX) and
Receive (RX) FIFOs, and a fractional Baud Rate
Generator (BRG). A global interrupt source register
provides a complete interrupt status indication for all
8-channels to speed up interrupt parsing. The V258
device operates at 33/66MHz and features fully
programmable TX and RX FIFO level triggers,
automatic hardware and software flow control, and
automatic RS-485 half duplex direction control output
for software and hardware design simplification.
NOTE 1: Covered by U.S. Patents #5,649,122 and #5,949,787
APPLICATIONS
Remote Access Servers
Storage Network Management
REV. 1.0.0
Factory Automation and Process Control
Instrumentation
Multi-port RS-232/RS-422/RS-485 Cards
Point-of-Sale Systems
FEATURES
High performance 32-bit 66MHz PCI UART
PCI 3.0 compliance
PCI power management rev. 1.1 compliance
EEPROM interface for PCI configuration
3.3V supply with 5V tolerant non-PCI (serial) inputs
Data read/write burst operation
Global interrupt register for all eight UART channels
Up to 8 Mbps serial data rate
Eight multi-purpose inputs/outputs
A 16-bit general purpose timer/counter
Sleep mode with wake-up Indicator
Eight independent UART channels controlled with
16C550 compatible register Set
64-byte TX and RX FIFOs with level counters
and programmable trigger levels
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 selectable turn-around delay
Infrared (IrDA 1.0) data encoder/decoder
Programmable data rate with prescaler
FIGURE 1. BLOCK DIAGRAM OF THE XR17V258
AD [31 :0]
C /B E#[3:0]
PAR
F R AM E #
T R D Y#
IR D Y#
STOP#
D E VS E L #
ID S E L#
33/66MH z CLK
RST#
P E RR #
S E RR #
IN TA#
PME#
E N IR
EECK
EEDI
EEDO
EECS
PCI Local
Bus
Int erfa ce
C o n fig u r atio n
Space
R e giste rs
E E PR OM
In te rfa c e
G lo b a l
C onfiguration
R egisters
16-bit
T ime r/C ounte r
UAR T C hannel 0
UA RT
Re gs
64-b yte TX FIFO
TX & RX
IR
EN D EC
BR G 64-b yte RX FIFO
UART Channel 1
UART Channel 2
UART Channel 3
UART Channel 4
UART Channel 5
UART Channel 6
UART Channel 7
M u lti -p u rp o s e
In puts/Ou tputs
C rystal Osc/B uffer
T X[7:0]
R X[7:0]
R TS#[7:0]
D TR #[7:0]
C TS #[7:0]
D SR #[7:0]
D CD #[7:0]
R I#[7:0]
M PIO [7:0]
X TAL1/C LK
XTAL2
TMRCK
Exar Corporation 48720 Kato Road, Fremont CA, 94538 (510) 668-7000 FAX (510) 668-7017 www.exar.com




Exar Corporation

XR17V258 Datasheet Preview

XR17V258 Datasheet

66MHZ PCI BUS OCTAL UART

No Preview Available !

XR17V258
66MHZ PCI BUS OCTAL UART WITH POWER MANAGEMENT SUPPORT
FIGURE 2. PIN OUT OF THE DEVICE
XTAL2 109
XTAL1 110
PME# 111
VCC 112
EEDO 113
EEDI 114
EECS 115
EECK 116
TX1 117
DTR1# 118
RTS1# 119
RI1# 120
CD1# 121
DSR1# 122
CTS1# 123
RX1
TX0
124
125
DTR0# 126
RTS0# 127
RI0# 128
CD0# 129
DSR0# 130
CTS0# 131
RX0 132
INTA# 133
RST# 134
CLK 135
GND 136
VCC 137
AD31 138
AD30 139
AD29 140
AD28 141
AD27 142
AD26 143
AD25 144
XR17V258
xr
REV. 1.0.0
72 CTS5#
71 RX5
70 ENIR
69 TMRCK
68 MPIO4
67 MPIO5
66 MPIO6
65 MPIO7
64 VCC
63 GND
62 TX6
61 DTR6#
60 RTS6#
59 RI6#
58 CD6#
57 DSR6#
56 CTS6#
55 RX6
54 TX7
53 DTR7#
52 RTS7#
51 RI7#
50 CD7#
49 DSR7#
48 CTS7#
47 RX7
46 GND
45 VCC
44 AD0
43 AD1
42 AD2
41 AD3
40 AD4
39 AD5
38 AD6
37 AD7
ORDERING INFORMATION
PART NUMBER
XR17V258IV
PACKAGE
144-Lead LQFP
OPERATING TEMPERATURE RANGE
-40°C to +85°C
DEVICE STATUS
Active
2


Part Number XR17V258
Description 66MHZ PCI BUS OCTAL UART
Maker Exar Corporation
Total Page 30 Pages
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