EKF - Short Profile
EKF - Short Profile


CompactPCI® Serial • 8-Port RS-232/RS-485 Interface

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DIP-Switch Setup

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RS-485 Transceiver


2+1 Wire

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CompactPCI® Serial  •  8-Port RS-232 & RS-485 Interface

The SU4-SOPRANO is a peripheral slot card for CompactPCI® Serial systems, equipped with a PCI Express® eight channel UART (Universal Asynchronous Receiver Transmitter). All ports are available through Micro-D front panel connectors, and can be user configured individually for either RS-232 or RS-485 by means of DIP-switches. The on-board transceivers allow for maximum bit rates up to 15Mbps when operated in RS-485 mode and up to 1Mbps in RS-232 mode.

Full- and half-duplex is supported for RS-485, with up to 256 nodes on a bus. The line termination can be switched on/off individually.

As an alternate, any particular port (TTL level) can be redirected to the optional backplane connectors P3 and P4, for rear I/O usage together with a suitable rear I/O module.

The SU4-SOPRANO fits into any CompactPCI® Serial peripheral slot that is PCIe enabled.


Summary of Features

CompactPCI® Serial
  • PICMG® CompactPCI® Serial standard (CPCI-S.0)
  • Single size Eurocard 3U 4HP 100x160mm2
  • Suitable for CompactPCI® Serial peripheral slot (PCI Express® enabled)
  • CompactPCI® Serial backplane connector P1 for PCI Express®, single lane link
  • Option CompactPCI® Serial backplane connectors P3, P4 for rear I/O

  • Pericom® PCI Express® Octal UART PI7C9X7958
  • Eight high performance 950-class UARTs
  • 16C550 software compatible
  • 128-Byte FIFO for each transmitter/receiver
  • Baud rate up to 15Mbps
  • XON/XOFF in-band flow control
  • CTS/RTS or DSR/DTR out-of-band control
  • Data frame 5, 6, 7, 8 and 9 bits
  • Clock prescaling 4 to 46

Front Panel I/O
  • 8 x Front panel Micro-D high density male connectors
  • 8 x Multiprotocol transceivers RS-232/RS-485 EXAR SP337EU
  • Protocol individually configurable for each port via on-board DIP-switches
  • Maximum data rate of 1Mbps in RS-232 mode
  • Maximum data rate of 15Mbps in RS-485 mode
  • 3 Drivers, 5 receivers RS-232 (COM port assignment)
  • 2 Drivers, 2 receivers RS-485
  • RS-485 full-duplex or half-duplex configuration, advanced fail-safe
  • RS-485 termination on/off selectable via on-board DIP-switch
  • 1/8th Unit load - up to 256 receivers on RS-485 bus
  • Robust 15kV ESD protection (human body model)
  • Micro-D cable assemblies available, e.g. Micro-D to classic style D-Sub male or female

Option Rear I/O
  • Ordering Option CompactPCI® Serial backplane connectors P3, P4 for rear I/O
  • Each UART port can be individually redirected to P3, P4 backplane connectors (TTL level) via DIP-switch configuration
  • Custom specific rear I/O module design, RS-232 or RS-485, isolated

Environment, Regulatory
  • Designed & manufactured in Germany
  • Certified quality management according to ISO 9000
  • Long term availability
  • Rugged solution (coating, sealing, underfilling on request)
  • RoHS compliant
  • Operation temperature -40°C to +85°C (industrial temperature range)
  • Storage temperature -40°C to +85°C, max. gradient 5°C/min
  • Humidity 5% ... 95% RH non condensing
  • Altitude -300m ... +3000m
  • Shock 15g 0.33ms, 6g 6ms
  • Vibration 1g 5-2000Hz
  • MTBF 28.4 years
  • EC Regulations EN55022, EN55024, EN60950-1 (UL60950-1/IEC60950-1)



SU4-SOPRANO DIP Switch Setup

SU4-SOPRANO DIP Switch Setup

SU4-SOPRANO RS-232 Transceiver Configuration

SU4-SOPRANO RS-232 Transceiver Configuration

SU4-SOPRANO RS-485 Transceiver Configuration

SU4-SOPRANO RS-485 Transceiver Configuration

SU4-SOPRANO Micro-D Connector Pin Assignment

SU4-SOPRANO Micro-D Connector Pin Assignment
Ordering Information
Please refer to List 21 for popular SKU


EKF is an ISO-9001 certified company
EKF Elektronik GmbH • Philipp-Reis-Str. 4 • 59065 Hamm • Germany
Phone +49 (0)2381/6890-0 • Fax +49 (0)2381/6890-90 • E-Mail