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XR17C158IV Datasheet

  • XR17C158IV

  • UART

  • 55頁

  • ETC

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謾莽
SEPTEMBER 2001
XR17C158
PCI BUS OCTAL UART
REV. 1.1.3
GENERAL DESCRIPTION
The XR17C158
1
(158) is an octal Universal Asyn-
chronous Receiver and Transmitter (UART). The de-
vice is designed to meet the 32-bit PCI Bus and high
bandwidth requirement in communication systems.
The global interrupt source register provides a com-
plete interrupt status indication for all 8 channels to
speed up interrupt parsing. Each UART has its own
16C550 compatible set of configuration registers,
transmit and receive FIFOs of 64 bytes, fully program-
mable transmit and receive FIFO level triggers, trans-
mit and receive FIFO level counters, automatic RTS/
CTS or DTR/DSR hardware flow control with pro-
grammable hysteresis, automatic software (Xon/Xoff)
flow control, IrDA (Infrared Data Association) encod-
er/decoder, 8 multi-purpose definable inputs/outputs,
and a 16-bit general purpose timer/counter.
N
OTE
:
1 Covered by U.S. Patents #5,649,122 and #5,949,787
FEATURES
鈥?/div>
High Performance Octal UART
鈥?/div>
32-bit PCI Bus Interface with EEPROM Interface
- Interrupt Source Register for all 8 UARTs
- Data Transfer in Byte, Word and Double-word
- Read/Write Burst Operation
鈥?/div>
Each UART Includes
- 16C550 Compatible Registers
- 64-byte Transmit and Receive FIFOs
- Transmit and Receive FIFO Level Counters
- Automatic RTS/CTS or DTR/DSR Flow Control
- Automatic Xon/Xoff Software Flow Control
- RS485 Half-duplex Control with Selectable Delay
- Infrared (IrDA 1.0) Data Encoder/Decoder
- Programmable Data Rate with Prescaler
- Up to 6.25 Mbps Serial Data Rate
鈥?/div>
Eight Multi-Purpose Inputs/outputs
鈥?/div>
A General Purpose 16-bit Timer/Counter
鈥?/div>
Sleep Mode with Automatic Wake-up
鈥?/div>
5V Operation (PCI Compliance)
鈥?/div>
3.3V Operation with 5V Tolerant Inputs
鈥?/div>
144-pin TQFP Package (20x20x1.4mm)
APPLICATIONS
鈥?/div>
Remote Access Servers
鈥?/div>
Ethernet Network to Serial Ports
鈥?/div>
Network Management
鈥?/div>
Factory Automation and Process Control
鈥?/div>
Point-of-Sale Systems
鈥?/div>
Multi-port RS-232/RS-422/RS-485 Cards
F
IGURE
1. B
LOCK
D
IAGRAM
CLK
RST#
A D [31 :0 ]
C /B E [3:0 ]#
FRAME#
IR D Y #
TRDY#
DEVSEL#
STOP#
IN T A #
ID S E L
PERR#
SERR#
PAR
U A R T C ha nn el 0
UA RT
Regs
BR G
64 Byte TX FIFO
TX & R X
IR
ENDEC
T X 0, R X 0 , D T R 0 #,
D S R 0 # , R T S 0# ,
C T S 0# , C D 0 #, R I0 #
64 Byte RX FIFO
U A R T C ha nn el 1
P C I L oca l
B us
In te rface
D e vice
C o nfig ura tion
R e giste rs
U A R T C ha nn el 2
U A R T C ha nn el 3
U A R T C ha nn el 4
U A R T C ha nn el 5
C o nfig ura tion
S pa ce
R e giste rs
U A R T C ha nn el 6
U A R T C ha nn el 7
T X 7, R X 7 , D T R 7 #,
D S R 7 # , R T S 7# ,
C T S 7# , C D 7 #, R I7 #
M P IO 0 - M P IO 7
XTAL1
XTAL2
TMRCK
EECK
EEDI
EEDO
EECS
EEPROM
In te rface
1 6-bit
T im er/C o un te r
M ulti-p urpo se
.
In pu ts/O u tpu ts
C rysta l O sc/B uffer
EXAR
Corporation 48720 Kato Road, Fremont CA, 94538
鈥?/div>
(510) 668-7000
鈥?/div>
FAX (510) 668-7017
鈥?/div>
www.exar.com

XR17C158IV 產品屬性

  • XR17C158

  • 60

  • 集成電路 (IC)

  • 接口 - UART（通用異步接收器/發(fā)送器）

  • -

  • *

  • 8

  • 64 字節(jié)

  • RS485

  • 4.5 V ~ 5.5 V

  • -

  • 是

  • 是

  • 是

  • 是

  • -

  • 表面貼裝

  • 144-LQFP

  • 144-LQFP（20x20）

  • 托盤

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