CU2-QUARTET
CompactPCI Intelligent 4-Port Asynchronous Interface
4 x UART 16C550 Powered by Local i960 Processor
Still the most common industrial data
transfer method: the asynchronous serial
interface according to RS-232 and RS-485.
A total of 4 serial ports (16550 type UART)
provides the intelligent
CompactPCI®
hostadapter CU2-QUARTET, each capable
of bitrates up to 230.4kBaud and
individually configurable according to either
RS-232E or RS-485.
Achieved by the available drivers software, the UARTs can be
used by the host CPU like they were legacy COM ports.
Thanks to the boards local intelligence,
preprocessing and buffering of the serial
data streams is also at the users choice,
thus reducing considerable the hosts
interrupt load.
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Especially when operated with higher
baudrates, the host CPU performance can
be improved noticeable when using block
transfers compared to the single character
read/write method.
Equipped with the powerful embedded
processor i960RP(D), the board profits from
the built-in PCI bridge as interface to the
CompactPCI®
system bus. 4MB DRAM and
4MB Flash EEPROM offer generous local
data buffering and program space.
Hence the CU2-QUARTET is well-suited
for all hard real-time applications with
demand for serial interfaces, e.g. data
aquisition, data concentration, machine
control or fieldbus gateway.
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All ports are directly available from the CU2-QUARTET front panel.
Due to the height of
3U, the board is provided with four 10-position
high density metric I/O connectors (system
har-link®); one of the ports is additionally
equipped with a D-SUB-9 connector
maintaining compatibility to the desktop PC
COM port. Assembled cable harnesses for
the har-link® connector type are available in
several configurations.
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Each port allows individual transceiver
configuration according to either RS-232E
or RS-485/422 by a single jumper. In
addition, all 4 UART channels are wired as
TTL-level signals to the rear connector J2.
By employing external transition modules
with built-in PHY transceivers, any other popular
industrial standard can be realized,
including isolated interfaces.
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CU2-QUARTET - Block Diagram
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The EKF drivers treat the CU2-QUARTET
module as 16C550 compatible COM ports.
The drivers allow arbitrary names e.g.
COM3..COM6 to be associated with the
ports of a QUARTET.
Developers might prefer to collect serial
data for block transfers or local
preprocessing directly on the QUARTET
board. Program
and data can be stored in a generous
amount of local memory (4MB DRAM and
4MB Flash EEPROM). As a
development tool, EKF provides the resident
monitor/debugger MON960, which allows
stand-alone operation and download of
programs via CPCI bus or serial interface.
Furthermore EKF can offer turn key ready
application programming support.
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The CU2-QUARTET hardware supports the
I2O interface.
This is a layered, standardized
driver concept, modeled after the OSI
reference, suitable especially for intelligent
I/O sub-processors.
Use of the CU2-QUARTET intelligent operation mode frees
the host-CPU from critical low level tasks,
an essential criterion for real-time
applications. Because the QUARTET can be
supplemented by a variety of external
transition (PHY transceiver) modules for popular
serial interface standards, it is a smart and
flexible solution to many different industrial
applications, offering a fast time to market
at moderate cost.
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CU2-QUARTET with CU9-2-BASE and CU7/CU8 PHY Modules
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The pin-out of the optional J2 connector matches the transition board CU9-2-BASE,
allowing for attachment of rear-I/O PHY modules (CU7/CU8 series). The connector J2
must not be stuffed if the CU2-QUARTET is intended for use on a 64-bit CompactPCI
backplane slot due to signal conflicts between a rear-I/O and a 64-bit backplane!
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The rear-I/O signals, derived from the CU2-QUARTET, are passed via its (optional)
CPCI connector J2, across the backplane, to the additionally available transition
board CU9-2-BASE. There are four local headers (H13..H16) provided for attachment of up
to 4 rear-I/O PHY interface modules of the
CU7-RS485 and
CU8-RS232
series across micro-ribbon
flat cables. The PHY interface modules can be directly mounted to the 12HP wide back
panel of the CU9-2-BASE transition board.
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CU9-2-BASE with CU7/CU8 PHY Modules
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CU2-QUARTET - Component Assembly
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Technical Specifications |
Printed Circuit Board
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Dimensions
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3U Eurocard (100x160mm2), front panel width 20.3mm (4HP),
mechanics constructed with respect to EMC requirements,
ejector lever
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CPU
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Microprocessor
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Intel i960RP/RD,
3.3V, 33/66MHz, clocked by system bus (local
oscillator provided when operated as stand-alone)
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Memory
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4MBytes FPM/EDO DRAM, 32-bit, 4MBytes FLASH EEPROM (SMT)
28F160S5 (Intel,Sharp), 32-bit
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Utilities
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Watchdog and 5V/3.3V voltage-supervisor MAX705, serial
EEPROM 4KByte I2C, optional: ACCESS.bus interface
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Firmware
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Mon960 Monitor/Debugger available
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Serial Interfaces
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Interface Type
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Asynchronous, serial protocol: 1 startbit; 7 or 8 databits; 1 or 2
stopbits; optional even/odd parity; standard bitrates up to 230.4kbps
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Serial Interface Controller
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16C550 asynchronous communication element, e.g. Texas
Instruments TL16C550C or equivalent
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Physical Interface
RS-232
and RS-485
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RS-232E/V.28 including modem support, alternatively RS-485
full-duplex (RxD/TxD and DSR/DTR) individually selectable for
each port, dual-mode transceiver SP334 (up to 230.4kbps @
RS-232, 10Mbps @ RS-485)
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Connectors SP1,
COM1..4
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1 x D-SUB-9 connector (SP1), 4 x har-link®
10-position I/O
connector (COM1..4), protruding through front panel cutouts
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Connector J2
(Option)
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Additionally all UART ports available as buffered TTL signals
across CompactPCI J2 connector for external transition-modules
(option only, J2 must be omitted for 64-bit CPCI bus slots)
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Drivers
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Serial drivers (COM port emulation) available by download for Windows NT4.0
and Windows 2000, others forthcoming
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CompactPCI®
Bus
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Connector J1
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32-Bit DMA Bus Master (133MB/s)
5V Interface
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Power Consumption
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Connector J1
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+5V ±5% 0.5A max.
(current consumption by optional external
transition-modules not included)
+3.3V ±0.3V 0.7A (i960RP) 0.9A (i960RD) max.
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Temperature
Humidity
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Commercial Grade Version
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Operating temperature 0-70°C
Humidity 5-90% non condensing
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Specifications are subject to change without further notice
Jumper |
JCLK
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CPU clock local/CPCI (optional)
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JCNF
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CPU behaviour after reset, effects of CPCI reset on CU2-QUARTET
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JSER
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Serial transceiver mode selection RS-232 or RS-485.
If RS-485 has been chosen,
drivers can be activated by RTS low, RTS high, or fix on
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Internal Connectors (optional) |
CJTAG
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JTAG test port
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ISPCON
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ispGAL programming port
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JACCBUS
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I2C-Bus expansion slot
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Front Panel Connectors |
COM1..4
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Serial Port 1-4 (COM1 in parallel to SP1), metric I/O connectors.
Note: do not
confuse connector assignment COM1..4 with arbitrary serial port
naming by software
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SP1
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Serial Port 1, D-SUB 9 connector, PC compatible pin-out when in
RS-232 mode
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COM1-4 (RS-232 Configuration)
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COM1-4 (RS-485 Configuration)
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SP1 (RS-232 Configuration)
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Ordering Information |
Alias
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Ordering Number
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Short Description
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QUARTET
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CU2-1-QUARTET
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3U, CompactPCI 4-port serial asynchronous
interface subsystem with i960RP CPU/bridge,
4MB Flash, 4MB DRAM, MON960, individually
selectable RS-232/RS-485, available from front
panel, ports additionally routed across J2 as
TTL level signals for use with rear-I/O interface
modules (option only, J2 is regularly omitted in
order not to interfere with 64-bit CompactPCI
backplanes)
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RS485
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CU7-1-RS485
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RS-485/RS-422 Rear I/O PHY interface module, 1 port, 2.5Mbps two wire
transmission line (party line), electrically isolated
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RS485
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CU7-2-RS485
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RS-485/RS-422 Rear I/O PHY interface module, 1 port, 2.5Mbps 4-wire
transmission line (point-to-point), electrically isolated
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RS232
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CU8-1-RS232
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RS-232E/V.28 rear-I/O PHY interface module, including flat cable assembly
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CU9-2-BASE
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Transition board, bridging function between CU2-QUARTET (J2)
and rear-I/O PHY interface modules, 4 ports, 3U/12HP back panel
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250.0205.30.04
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1m Cable harness Har-Link to D-Sub 9-position male connector,
emulates PC COM port, D-Sub hood with nuts 4/40 UNC
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250.0205.30.05
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2m Cable harness Har-Link to Har-Link connector, to be used as RS-232
link-cable (null-modem) between CU2-QUARTET boards
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250.0205.30.06
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Similar to 250.0205.30.04, but D-Sub hood with screw
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250.0205.30.07
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2m Cable harness, single Har-Link connector with open cable endings,
to be finished by the customer
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280.7.201
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Link-cable (null-modem), female D-Sub 9-position connectors, suitable in
combination with 250.0205.30.04 for data exchange between CU2-QUARTET and PC COM port
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