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xr
AUGUST 2005
XR17C158
5V PCI BUS OCTAL UART
REV. 1.4.3
GENERAL DESCRIPTION
The XR17C1581 (158) is an octal Universal Asynchronous Receiver and Transmitter (UART). The device is designed to meet the 32-bit PCI Bus and high bandwidth requirement in communication systems. The global interrupt source register provides a complete 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 programmable transmit and receive FIFO level triggers, transmit and receive FIFO level counters, automatic RTS/CTS or DTR/DSR hardware flow control with programmable hysteresis, automatic software (Xon/Xoff) flow control, IrDA (Infrared Data Association) encoder/decoder, 8 multi-purpose definable inputs/outputs, and a 16-bit general purpose timer/counter.
NOTE:
1 Covered by U.S. Patents #5,649,122 and #5,949,787
FEATURES • High Performance Octal UART • 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 • 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 • Eight Multi-Purpose Inputs/outputs • A General Purpose 16-bit Timer/Counter • Sleep Mode with Automatic Wake-up • 5V Operation (PCI Compliance) • Same package and pinout as the XR17C154, XR17D154 and XR17D158 • 144-pin LQFP Package (20x20x1.4mm)
APPLICATIONS • 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 FIGURE 1. BLOCK DIAGRAM
CLK RST# AD[31:0] C/BE[3:0]# FRAME# IRDY# TRDY# DEVSEL# STOP# INTA# IDSEL PERR# SERR# PAR
UART Channel 0
UART Regs BRG 64 Byte TX FIFO TX & RX IR ENDEC
64 Byte RX FIFO
TX0, RX0, DTR0#, DSR0#, RTS0#, CTS0#, CD0#, RI0#
UART Channel 1 PCI Local Bus Interface Device Configuration Registers UART Channel 2 UART Channel 3 UART Channel 4 UART Channel 5 Configuration Space Registers UART Channel 6 UART Channel 7 TX7, RX7, DTR7#, DSR7#, RTS7#, CTS7#, CD7#, RI7# MPIO0- MPIO7 XTAL1 XTAL2 TMRCK
EECK EEDI EEDO EECS
EEPROM Interface
16-bit Timer/Counter
Multi-purpose . Inputs/Outputs Crystal Osc/Buffer
Exar Corporation 48720 Kato Road, Fremont CA, 94538 • (510) 668-7000 • FAX (510) 668-7017 • www.exar.com
XR17C158 5V PCI BUS OCTAL UART FIGURE 2. PIN OUT OF THE DEVICE
101 DSR2# DSR3# DSR4# DSR5# DTR3# DTR2# DTR4#
xr
REV. 1.4.3
MPIO0
107 MPIO1
104 RTS2#
100 CTS2#
RTS3#
CTS3#
CTS4#
79 DTR5#
RTS5#
86 RTS4#
103 RI2#
91 RX3
99
98
97
96
95
94
93
92
90
89
88
87
85
84
83
82
81
108
106
105
102
80
78
77
76
75
74
MPIO2
CD2#
CD3#
CD4#
CD5#
RI3#
RI4#
RI5#
RX2
RX4
TX2
TX3
TX4
XTAL2 XTAL1 TEST# VCC EEDO EEDI EECS EECK TX1
109 110 111 112 113 114 115 116 117
73 72 71 70 69 68 67 66 65 64 63 62 61 60 59 58 57 56
MPIO3
GND
VCC
TX5
CTS5# RX5 ENIR TMRCK MPIO4 MPIO5 MPIO6 MPIO7 VCC GND TX6 DTR6# RTS6# RI6# CD6# DSR6# CTS6# RX6 TX7 DTR7# RTS7# RI7# CD7# DSR7# CTS7# RX7 GND VCC AD0 AD1 AD2 AD3 AD4 AD5 AD6 AD7
DTR1# 118 RTS1# 119 RI1# CD1# 120 121
DSR1# 122 CTS1# 123 RX1 TX0 124 125
DTR0# 126 RTS0# 127 RI0# CD0# 128 129
XR17C158
55 54 53 52 51 50 49 48 47 46 45 44 43 42 41 40 39 38 37 31 27 32 35 GND 33
DSR0# 130 CTS0# 131 RX0 INTA# RST# CLK GND VCC AD31 AD30 AD29 AD28 AD27 AD26 AD25 132 133 134 135 136 137 138 139 140 141 142 143 144 11 12 17 DEVSEL# 18 19 20 STOP 21 # PERR# 22 24 CBE1 25 28 29 SERR# 23 10 13 CBE2 14 FRAME# 15 IRDY# 16 26 30 34 36 CBE0 1 2 4 3 5 6 7 8 9
IDSEL
TRDY#
CBE3
AD24
AD23
GND
AD17
AD22
AD20
AD19
AD16
AD21
AD18
AD15
AD14
AD13
AD12
AD11
AD10
VCC
GND
VCC
PAR
AD9
ORDERING INFORMATION
PART NUMBER XR17C158CV XR17C158IV 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
AD8
VCC
xr
REV. 1.4.3
XR17C158 5V PCI BUS OCTAL UART
PIN DESCRIPTIONS
Pin Description
NAME RST# PIN # 134 TYPE I DESCRIPTION Bus reset input (active low). It resets the PCI local bus configuration space registers, device configuration registers and UART channel registers to the default condition, see Table 19. Bus clock input of up to 33.34MHz at 5V. Address data lines [31:0] (bidirectional).
PCI LOCAL BUS INTERFACE
CLK AD31-AD25, AD24, AD23-AD16, AD15-AD8, AD7-AD0 FRAME# C/BE0#-C/BE3# IRDY#
135 138-144, 1, 6-13, 26-33, 37-44 15 36,25,14,2 16
I IO
I I I
Bus transaction cycle frame (active low). It indicates the beginning and duration of an access. Bus Command/Byte Enable [3:0] (active low). This line is multiplexed for bus Command during the address phase and Byte Enables during the data phase. Initiator Ready (active low). During a write, it indicates that valid data is present on data bus. During a read, it indicates the master is ready to accept data. Target Ready (active low). Target request to stop current transaction (active low). Initialization device select (active high). Device select to the XR17C158 (active low). Device interrupt from XR17C158 (open drain, active low). Parity is even across AD[31:0] and C/BE[3:0]# (bidirectional, active high). Data Parity error indicator, except for Special Cycle transactions (active low). Optional in bus target application. System error indicator, Address parity or Data parity during Special Cycle transactions (open drain, active low). Optional in bus target application. UART channel 0 Transmit Data or infrared transmit data. UART channel 0 Receive Data or infrared receive data. Normal RXD input idles HIGH. The infrared pulses typically idle LOW but can be inverted internally prior the decoder by FCTR[4]. UART channel 0 Request to Send or general purpose output (active low). UART channel 0 Clear to Send or general purpose input (active low). UART channel 0 Data Terminal Ready or general purpose output (active low). UART channel 0 Data Set Ready or general purpose input (active low). UART channel 0 Carrier Detect or general purpose input (active low). UART channel 0 Ring Indicator or general purpose input (active low). UART channel 1 Transmit Data or infrared transmit data. UART channel 1 Receive Data or infrared receive data. Normal RXD input idles HIGH. The infrared pulses can be inverted internally prior the decoder by FCTR[4]. UART channel 1 Request to Send or general purpose output (active low). UART channel 1 Clear to Send or general purpose input (active low).
TRDY# STOP# IDSEL DEVSEL# INTA# PAR PERR# SERR#
17 21 3 18 133 24 22 23
O O I O OD IO O OD
MODEM OR SERIAL I/O INTERFACE TX0 RX0 125 132 O I
RTS0# CTS0# DTR0# DSR0# CD0# RI0# TX1 RX1
127 131 126 130 129 128 117 124
O I O I I I O I
RTS1# CTS1#
119 123
O I
3
XR17C158 5V PCI BUS OCTAL UART Pin Description
NAME DTR1# DSR1# CD1# RI1# TX2 RX2 PIN # 118 122 121 120 106 99 TYPE O I I I O I DESCRIPTION
xr
REV. 1.4.3
UART channel 1 Data Terminal Ready or general purpose output (active low). UART channel 1 Data Set Ready or general purpose input (active low). UART channel 1 Carrier Detect or general purpose input (active low). UART channel 1 Ring Indicator or general purpose input (active low). UART channel 2 Transmit Data or infrared transmit data. UART channel 2 Receive Data or infrared receive data. Normal RXD input idles HIGH. The infrared pulses typically idle LOW but can be inverted internally prior the decoder by FCTR[4]. UART channel 2 Request to Send or general purpose output (active low). UART channel 2 Clear to Send or general purpose input (active low). UART channel 2 Data Terminal Ready or general purpose output (active low). UART channel 2 Data Set Ready or general purpose input (active low). UART channel 2 Carrier Detect or general purpose input (active low). UART channel 2 Ring Indicator or general purpose input (active low). UART channel 3 Transmit Data or infrared transmit data. UART channel 3 Receive Data or infrared receive data. Normal RXD input idles HIGH. The infrared pulses typically idle LOW but can be inverted internally prior the decoder by FCTR[4]. UART channel 3 Request to Send or general purpose output (active low). UART channel 3 Clear to Send or general purpose input (active low). UART channel 3 Data Terminal Ready or general purpose output (active low). UART channel 3 Data Set Ready or general purpose input (active low). UART channel 3 Carrier Detect or general purpose input (active low). UART channel 3 Ring Indicator or general purpose input (active low). UART channel 4 Transmit Data or infrared transmit data. UART channel 4 Receive Data or infrared receive data. Normal RXD input idles HIGH. The infrared pulses typically idle LOW but can be inverted internally prior the decoder by FCTR[4]. UART channel 4 Request to Send or general purpose output (active low). UART channel 4 Clear to Send or general purpose input (active low). UART channel 4 Data Terminal Ready or general purpose output (active low). UART channel 4 Data Set Ready or general purpose input (active low). UART channel 4 Carrier Detect or general purpose input (active low). UART channel 4 Ring Indicator or general purpose input (active low). UART channel 5 Transmit Data or infrared transmit data. UART channel 5 Receive Data or infrared receive data. Normal RXD input idles HIGH. The infrared pulses typically idle LOW but can be inverted internally prior the decoder by FCTR[4]. UART channel 5 Request to Send or general purpose output (active low). UART channel 5 Clear to Send or general purpose input (active low). UART channel 5
