1. Product Overview

Product Name: A3032I PCIe 32-Port Isolated Serial Communication Card
Model: A3032I
Series: A320 / A1032I Advanced PCIe Intelligent Multiport Series
Article Number: A3032I
Manufacturer: RAYON TECHNOLOGY CO., LTD.
Manufacturer Address: 2F, No. 177, Chung Shan 2 Rd., Lu Chou City, Taipei Hsien, Taiwan
Contact: Tel: +886-2-82858362 | Fax: +886-2-82857065
Email: rayon@ms1.hinet.net / info@rayontech.com.tw
Web: [www.rayontech.com](http://www.rayontech.com)

The A3032I is a high-density, industrial-grade PCI Express serial communication card designed to provide 32 fully ground-isolated RS232/422/485 ports in a single PCIe slot. It is part of Rayon’s A320/A1032I intelligent multiport architecture, offering scalable expansion up to 64 ports per system. The card integrates advanced UART controllers, isolation circuitry, and a robust PCIe interface for reliable, high-speed serial communication across multiple industrial and computing environments.

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2. Key Features

- High Port Density: Supports 32 independent, ground-isolated serial ports (RS232/422/485).
- Scalable Architecture: Based on the A320 intelligent multiport platform; expandable up to 64 ports per PCIe slot using compatible connector boxes.
- Single IRQ Operation: All 32 ports share one interrupt request line, minimizing system resource usage.
- Full Electrical Isolation: Each port is galvanically isolated to prevent ground loops and electrical interference.
- Flexible Interface Configuration: Each port can be configured individually for RS232, RS422, or RS485 operation via DIP switches.
- Advanced UART Control: Built-in FIFO-type 16C554 UART controllers ensure efficient data buffering and reduced CPU overhead.
- Wide OS Compatibility: Supports DOS, Windows 95/98/Me/NT/2000/XP/Vista/7, Linux, and SCO OpenServer.
- High Reliability: Industrial-grade design with wide operating temperature and humidity tolerance.
- Plug-and-Play PCIe Interface: Fully compliant with PCI Express bus standards, supporting 3.3V signaling.
- Flexible Expansion: Compatible with IF108, IF208, and IF308 connector boxes for modular port configuration.
- Comprehensive Driver Support: Includes drivers and installation utilities for major operating systems, with source-level Linux drivers for kernel integration.
- Ground Isolation: Each IF-series connector box provides galvanic isolation for all ports, ensuring safe operation in electrically noisy environments.
- Flow Control Options: Supports both hardware (RTS/CTS) and software (XON/XOFF) flow control.
- High-Speed Communication: Baud rates configurable from 110 to 115,200 bps per port.
- Compact Design: Occupies a single PCIe slot with a small form factor (10.0 × 9.5 cm).

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3. Technical Specifications

Card Specifications (A3032I / A320 Platform):
- Bus Interface: PCI Express (3.3V signaling)
- Slot Compatibility: PCIe x1 and higher
- IRQ Assignment: Single IRQ assigned by PCI BIOS
- Memory Map Model:
- 128 Bytes for PCI controller
- Two 4 KB blocks for UART controllers
- I/O Map Model:
- 128 Bytes I/O for PCI controller
- 256 Bytes I/O for UART controller
- 64 Bytes I/O for status registers
- Dimensions: 100 mm × 95 mm
- Weight: Approx. 120 g (card only)
- Material: Multi-layer PCB with industrial-grade components
- Operating Temperature: 5°C to 40°C
- Storage Temperature: 0°C to 65°C
- Operating Humidity: 10%–90% RH (non-condensing)
- Storage Humidity: 5%–90% RH (non-condensing)

Connector Box Specifications (IF108 / IF208 / IF308):
- Controller: FIFO-type 16C554 UART chip
- Connector Type: DB9 male connectors
- Port Count: 8 ports per box
- Interface Options:
- IF108: Ground-isolated RS232C
- IF208: Ground-isolated RS422/RS485 (DIP switch selectable)
- IF308: Ground-isolated RS232/RS422/RS485 (DIP switch selectable)
- Baud Rate: 110–115,200 bps (supports 50, 75, 150 bps mapping for UNIX compatibility)
- Flow Control: XON/XOFF (software), RTS/CTS (hardware)
- Dimensions: 268 × 128 × 38 mm
- Operating Temperature: 5°C–40°C
- Storage Temperature: 0°C–65°C
- Humidity: 10%–90% RH operating, 5%–90% RH storage

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4. Functionality

The A3032I operates as an intelligent multiport serial communication controller. It interfaces with the host system via the PCIe bus and provides up to 32 isolated serial ports through four IF108 connector boxes. Each port can be configured for RS232, RS422, or RS485 communication, allowing flexible integration with a wide range of serial devices such as industrial controllers, sensors, modems, and data acquisition systems.

Use Cases and Applications:
- Industrial automation and process control
- SCADA and telemetry systems
- Data acquisition and instrumentation
- POS and kiosk systems
- Serial device networking and management
- Multi-user terminal servers
- Communication gateways and protocol converters

Compatibility:
- Fully compatible with standard PCIe slots in desktop and industrial PCs.
- Supports major operating systems with dedicated drivers and utilities.
- Compatible with Rayon’s IF108/208/308 connector boxes and A640 interconnect cables.

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5. Components & Accessories

Included Items:
- A3032I PCIe card (A320 intelligent multiport base)
- Four IF108 connector boxes (8 ports each, RS232 ground-isolated)
- One A640 interconnect cable (0.7 m, DB37 male connector)
- Driver and utility software package (Windows/Linux/SCO)
- Installation manual and documentation

Optional Add-ons:
- IF208 or IF308 connector boxes for RS422/RS485 or mixed interface configurations
- Additional A640 cables for extended installations
- Mounting brackets for daisy-chained box configurations
- P640NU PCI card (legacy compatibility)
- IOP3927F intelligent CPU card (133 MHz MIPS processor) for advanced offload processing

Connectors:
- Card-side: DB37 male connector
- Box-side: DB9 male connectors (8 per box)
- Daisy-chain connectors: 37-pin D-type (male/female)

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6. Installation & Setup

System Requirements:
- IBM PC/AT or compatible system
- Available PCIe slot (x1 or higher)
- Supported OS: DOS, Windows 95/98/Me/NT/2000/XP/Vista/7, Linux, SCO OpenServer
- Minimum 3.3V power supply on PCIe bus

Installation Steps:
1. Power off the system and insert the A3032I card into an available PCIe slot.
2. Connect the A640 cable from the card’s DB37 connector to the first IF108 box.
3. Daisy-chain additional IF108 boxes as needed (up to four for 32 ports).
4. Secure boxes using provided brackets if multiple units are chained.
5. Power on the system and install the appropriate driver package.
6. Configure port parameters (COM numbering, baud rate, flow control) via driver setup utility.
7. Verify installation using the included test utilities (e.g., “etty” and “om” for Linux).

Mounting Options:
- Desktop or rack-mount installation for connector boxes
- Daisy-chain up to 8 boxes using 37-pin interconnects
- Optional brackets for stable multi-box configurations

Configuration:
- DIP switches on each IF box select RS232/RS422/RS485 mode per port.
- Software utilities allow COM port mapping and baud rate configuration.

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7. Performance & Capabilities

- Port Count: 32 isolated serial ports (expandable to 64)
- Baud Rate Range: 110–115,200 bps per port
- Data Bits: 5, 6, 7, or 8
- Stop Bits: 1 or 2
- Parity: None, Even, Odd, Mark, Space
- Flow Control: RTS/CTS, XON/XOFF
- Isolation Voltage: >500 VDC between ports and system ground
- Throughput: Optimized via FIFO buffering and intelligent interrupt handling
- Latency: Low-latency communication through efficient PCIe bus mapping
- System Load: Minimal CPU overhead due to intelligent UART management
- Maximum Cards per System: 2 (up to 64 ports total)
- Reliability: Continuous operation in industrial environments with high EMI immunity

Limitations:
- Maximum of two cards per system (64 ports total)
- RS485 mode limited to half-duplex operation
- Requires proper driver installation for full OS support

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8. Standards & Compliance

- Bus Interface: PCI Express 1.0/2.0 compliant
- Serial Standards: EIA/TIA RS232C, RS422, RS485
- Isolation: Ground isolation per port (IF-series boxes)
- EMC Compliance: Designed for industrial EMI/ESD immunity
- Environmental Compliance: RoHS-compliant materials
- Operating System Drivers: Certified for Windows and Linux distributions
- Industry Standards: Compatible with standard UART communication protocols

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9. Additional Information

Warranty:
- One-year limited warranty covering defects in materials and workmanship.
- Excludes damage from misuse, unauthorized servicing, or electrical faults.

Support & Maintenance:
- Technical support via email and web resources.
- Firmware and driver updates available from Rayon’s website.
- RMA (Return Material Authorization) procedure available for repairs.

Maintenance Recommendations:
- Ensure proper grounding and isolation during installation.
- Avoid hot-swapping connector boxes while powered.
- Periodically inspect cables and connectors for wear.

Software Utilities:
- Windows: Driver setup and COM port configuration tools.
- Linux: Source-level driver with “etty” (port test) and “om” (monitor) utilities.
- SCO UNIX: Kernel-linked driver installation via /etc/custom or tar method.

Expansion Compatibility:
- Fully compatible with other Rayon intelligent cards (P640NU, IOP3927F, P1688U).
- Supports daisy-chained IF/NF connector boxes for flexible port scaling.

Manufacturer’s Note:
Rayon Technology specializes in multi-user and industrial communication systems, offering a complete range of serial connectivity solutions including PCI/PCIe multiport cards, device servers, and KVM systems. The A3032I represents a robust, scalable, and reliable solution for high-density serial communication in industrial and enterprise environments.

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Summary

The RAYON A3032I PCIe 32-Port Isolated Serial Card is a professional-grade, intelligent multiport communication solution engineered for demanding industrial and data communication applications. Built on the proven A320 architecture, it delivers high port density, full electrical isolation, and broad OS compatibility within a compact PCIe form factor. With support for RS232, RS422, and RS485 interfaces, the A3032I provides unmatched flexibility for connecting diverse serial devices while maintaining signal integrity and system stability. Its modular design, comprehensive driver support, and industrial reliability make it an ideal choice for system integrators, OEMs, and industrial automation professionals seeking scalable serial connectivity.