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XR17D154 Datasheet Preview

XR17D154 Datasheet

UNIVERSAL (3.3V AND 5V) PCI BUS QUAD UART

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AUGUST 2005
GENERAL DESCRIPTION
XR17D154
UNIVERSAL (3.3V AND 5V) PCI BUS QUAD UART
FEATURES
REV. 1.2.2
The XR17D1541 (D154) is a quad PCI Bus Universal
Asynchronous Receiver and Transmitter (UART) with
same package and pin-out as the Exar XR17C158,
XR17D158 and XR17C154. The device is designed
to meet today’s 32-bit PCI Bus and high bandwidth
requirement in communication systems. The global
interrupt source register provides a complete interrupt
status indication for all 4 channels to speed up
interrupt parsing. Each UART is independently
controlled and has its own 16C550 compatible 5G
register set, transmit and receive FIFOs of 64 bytes,
fully programmable transmit and receive FIFO trigger
levels, transmit and receive FIFO level counters,
automatic hardware flow control with programmable
hysteresis, automatic software (Xon/Xoff) flow
control, IrDA (Infrared Data Association) encoder/
decoder, 8 multi-purpose inputs/outputs and a 16-bit
general purpose timer/counter.
NOTE: 1 Covered by U.S. Patents #5,649,122, #5,949,787
APPLICATIONS
Universal Form Factor PCI Bus Add-in Card
Remote Access Servers
Ethernet Network to Serial Ports
Network Management
Factory Automation and Process Control
Point-of-Sale Systems
Multi-port RS-232/RS-422/RS-485 Cards
High Performance Quad PCI UART
Universal PCI Bus Buffers - Auto-sense 3.3V or 5V
Operation
32-bit PCI Bus 2.3 Target Signalling Compliance
A Global Interrupt Source Register for all 4 UARTs
Data Transfer in Byte, Word and Double-word
Data Read/Write Burst Operation
Each UART is independently controlled with:
16C550 Compatible 5G Register Set
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
Automatic RS485 Half-duplex Control Output
with Selectable Turn-around Delay
Infrared (IrDA 1.0) Data Encoder/Decoder
Programmable Data Rate with Prescaler
Up to 6.25 Mbps Serial Data Rate at 8X
Eight Multi-Purpose Inputs/outputs
General Purpose 16-bit Timer/Counter
Sleep Mode with Automatic Wake-up
EEPROM Interface for PCI Configuration
Same package and pin-out as the XR17D158,
XR17C158 and XR17C154 (20x20x1.4mm 144-
LQFP)
FIGURE 1. BLOCK DIAGRAM
3.3V or 5V
(PCI VI/O
Power Supply)
CLK (33MHz)
RST#
AD[31:0]
C/BE[3:0]#
FRAME#
IRDY#
TRDY#
DEVSEL#
STOP#
INTA#
IDSEL
PERR#
SERR#
PAR
EECK
EEDI
EEDO
EECS
ENIR
PCI Local
Bus
Interface
Device
Configuration
Registers
Configuration
Space
Registers
EEPROM
Interface
16-bit
Timer/Counter
UART Channel 0
UART
Regs
BRG
64 Byte TX FIFO
TX & RX
IR
ENDEC
64 Byte RX FIFO
UART Channel 1
UART Channel 2
UART Channel 3
M u lti-p u r.p o s e
Inputs/Outputs
Crystal Osc/Buffer
VCC (Core
Logic)
GND
TX0, RX0, DTR0#,
DSR0#, RTS0#,
CTS0#, CD0#, RI0#
TX3, RX3, DTR3#,
DSR3#, RTS3#,
CTS3#, CD3#, RI3#
MPIO0- MPIO7
XTAL1
XTAL2
TMRCK
Exar Corporation 48720 Kato Road, Fremont CA, 94538 (510) 668-7000 FAX (510) 668-7017 www.exar.com




Exar

XR17D154 Datasheet Preview

XR17D154 Datasheet

UNIVERSAL (3.3V AND 5V) PCI BUS QUAD UART

No Preview Available !

XR17D154
UNIVERSAL (3.3V AND 5V) PCI BUS QUAD UART
FIGURE 2. PIN OUT OF THE DEVICE
XTAL2 109
XTAL1 110
TEST# 111
VCC 112
EEDO
EEDI
EECS
113
114
115
EECK 116
NC 117
NC 118
NC 119
NC 120
NC 121
NC 122
NC 123
NC 124
TX0 125
DTR0# 126
RTS0# 127
RI0# 128
CD0# 129
DSR0# 130
CTS0# 131
RX0 132
INTA#
RST#
CLK
GND
VIO
AD31
AD30
AD29
133
134
135
136
137
138
139
140
AD28 141
AD27 142
AD26
AD25
143
144
XR17D154
144-LQFP
xr
REV. 1.2.2
72 NC
71 NC
70 ENIR
69 TMRCK
68 MPIO4
67 MPIO5
66 MPIO6
65 MPIO7
64 VCC
63 GND
62 TX3
61 DTR3#
60 RTS3#
59 RI3#
58 CD3#
57 DSR3#
56 CTS3#
55 RX3
54 NC
53 NC
52 NC
51 NC
50 NC
49 NC
48 NC
47 NC
46 GND
45 VIO
44 AD0
43 AD1
42 AD2
41 AD3
40 AD4
39 AD5
38 AD6
37 AD7
ORDERING INFORMATION
PART NUMBER
XR17D154CV
XR17D154IV
PACKAGE
144-Lead LQFP
144-Lead LQFP
OPERATING TEMPERATURE RANGE
0°C to +70°C
-40°C to +85°C
DEVICE STATUS
Active
Active
2


Part Number XR17D154
Description UNIVERSAL (3.3V AND 5V) PCI BUS QUAD UART
Maker Exar
Total Page 30 Pages
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