Comprehensive Product Summary – Rayon Technology P1048 Universal PCIPORT Card

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### 1. Product Overview

Product Name: UPCI 48×RS232 Intelligent Serial Solution
Model: P1048
Series: Universal PCIPORT Intelligent Multi-Port Serial Card Series
Article Number: P1048
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
Websites: [www.rayontech.com](http://www.rayontech.com), [www.computex.com.tw/rayon](http://www.computex.com.tw/rayon)

The Rayon P1048 Universal PCIPORT Card is a high-density intelligent serial communication solution designed for industrial and enterprise systems requiring large-scale RS232 connectivity. It integrates advanced PCI bus compatibility, intelligent resource management, and multi-OS driver support, enabling up to 48 independent RS232 serial ports from a single PCI slot. The P1048 is part of Rayon’s modular multi-port architecture built around the P640NU intelligent multi-port controller, offering scalability, reliability, and compatibility across multiple operating environments.

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### 2. Key Features

- High-Density Serial Expansion: Supports 48 RS232 serial ports via three NF116 connector boxes, each providing 16 ports.
- Universal PCI Compatibility: Operates in both 5V and 3.3V PCI 33MHz bus slots, ensuring compatibility with legacy and modern systems.
- Single IRQ Resource Allocation: Utilizes one IRQ for all 48 ports, minimizing system resource consumption.
- Intelligent Architecture: Based on the P640NU intelligent multi-port card, providing efficient data handling and reduced CPU load.
- Flexible Memory Mapping: Supports both memory-mapped and I/O-mapped configurations for optimized performance under different OS environments.
- Comprehensive OS Support: Compatible with DOS, Windows 95/98/Me, Windows NT/2000/XP/Vista/7, Linux, and SCO OpenServer.
- Industrial-Grade Design: Engineered for continuous operation in industrial environments with wide temperature and humidity tolerance.
- Modular Expansion: Daisy-chain capable connector boxes allow scalable port expansion and simplified cabling.
- Hardware Flow Control: Supports both RTS/CTS hardware and XON/XOFF software handshaking.
- High-Speed Communication: Each port configurable from 110 to 115,200 bps, with UNIX-compatible baud rate mapping.
- Compact Form Factor: PCI card dimension of 5.0 × 3.4 inches, suitable for standard PC enclosures.
- Upgradeable Platform: Compatible with Rayon’s PCIIOP intelligent series, allowing future upgrades to local-processor-based cards (e.g., P990F, IOP3927F).

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### 3. Technical Specifications

System Structure:
- Controller Card: P640NU intelligent multi-port card
- Connector Boxes: Three NF116 RS232 boxes (16 ports each)
- Cable: A640 interconnect cable (0.7 m standard length)

System Resource & IRQ Mapping:
- Memory Map Mode:
- 128 Bytes for PCI controller
- Two 4 KBytes for UART controller
- I/O Map Mode:
- 128 Bytes I/O for PCI controller
- 256 Bytes I/O for UART controller
- 64 Bytes I/O for status register
- IRQ: One free IRQ assigned automatically by PCI BIOS

Hardware Compatibility:
- PCI Bus: 5V & 3.3V, 33MHz PCI slot
- Maximum Cards per System: 2

Software Compatibility:
- DOS (I/O map mode only)
- Windows 95/98/Me (I/O map mode only)
- Windows NT/2000/XP/Vista/7
- Linux
- SCO OpenServer

Physical Characteristics:
- Card Dimensions: 5.0 × 3.4 inches (127 × 86 mm)
- Connector Type: DB9 male connectors on NF116 boxes
- Cable Type: A640 37-pin D-type cable
- Material: Industrial-grade PCB with reinforced connectors

Environmental Conditions:
- Operating Temperature: 5°C to 40°C
- Storage Temperature: 0°C to 65°C
- Operating Humidity: 10% to 90% RH (non-condensing)
- Storage Humidity: 5% to 90% RH

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### 4. Functionality

The P1048 functions as a multi-port serial communication interface that expands a single PCI slot into 48 independent RS232 channels. Each channel operates as a standard COM port, fully compatible with serial devices such as modems, terminals, barcode scanners, industrial controllers, and embedded systems.

Operation Principle:
- The P640NU card interfaces with the host PCI bus, managing data flow between the system CPU and external serial devices.
- Three NF116 connector boxes are daisy-chained via the A640 cable, each providing 16 RS232 ports.
- The card’s intelligent design allows all ports to share a single IRQ, reducing CPU overhead and simplifying system configuration.
- Baud rates and flow control parameters are software-configurable per port.

Use Cases:
- Industrial automation and control systems
- Multi-terminal server environments
- Data acquisition and monitoring systems
- POS and kiosk networks
- Communication hubs for embedded systems
- Serial device aggregation in data centers

Compatibility:
- Fully compatible with standard RS232C signaling.
- Supports legacy and modern operating systems with dedicated drivers.
- Integrates seamlessly with Rayon’s intelligent PCIIOP architecture for future scalability.

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### 5. Components & Accessories

Included Components:
- 1 × P640NU intelligent PCI card
- 3 × NF116 RS232 connector boxes (16 ports each)
- 1 × A640 37-pin interconnect cable (0.7 m)

Optional Accessories:
- Extended A640 cables for longer distances
- Mounting brackets for multi-box installations
- Replacement NF116 boxes for modular expansion
- Upgrade kits for PCIIOP intelligent processor cards (P990F, IOP3927F)

Connector Details:
- NF116 Box Interface: RS232C, 16 DB9 male connectors per box
- Cable Interface: 37-pin D-type male/female connectors for daisy-chaining
- Each box includes LED indicators for power and data transmission

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### 6. Installation & Setup

System Requirements:
- IBM PC/AT or compatible system with available PCI slot
- Supported operating system (DOS, Windows, Linux, or SCO)
- One available IRQ (assigned automatically by BIOS)

Installation Steps:
1. Power off the system and insert the P640NU card into an available PCI slot.
2. Connect the A640 cable between the card and the first NF116 box.
3. Daisy-chain additional NF116 boxes as required (up to three for 48 ports).
4. Secure boxes using provided brackets if necessary.
5. Power on the system; the PCI BIOS will assign resources automatically.
6. Install the appropriate driver for the operating system.
7. Configure COM port assignments and baud rates via the driver setup utility.

Configuration Notes:
- DOS and Windows 9x require I/O map mode.
- Windows NT/2000/XP/Vista/7, Linux, and SCO support both memory and I/O map modes.
- Each port can be configured independently for baud rate, parity, and flow control.

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### 7. Performance & Capabilities

Port Performance:
- Baud Rate Range: 110 to 115,200 bps per port
- UNIX Baud Rate Mapping: 50, 75, 150 bps correspond to 57,600, 76,800, and 115,200 bps
- Flow Control: XON/XOFF (software), RTS/CTS (hardware)
- Data Bits: 5, 6, 7, or 8
- Stop Bits: 1 or 2
- Parity: None, Even, Odd, Mark, Space

Capacity:
- 48 independent RS232 ports per card
- Up to 2 cards per system (96 total ports)
- Each port fully isolated and configurable

Efficiency:
- Single IRQ for all ports reduces CPU interrupt load
- Intelligent buffering via dual 4K UART memory blocks
- Optimized for high-throughput multi-user environments

Limitations:
- DOS and Windows 9x limited to I/O map mode
- Maximum of two cards per system due to IRQ and resource constraints
- RS232-only interface (no RS422/RS485 support on this model)

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### 8. Standards & Compliance

Electrical & Interface Standards:
- RS232C compliant signaling
- PCI Local Bus Specification 2.2 compliant
- Universal PCI (5V/3.3V) compatibility

Software & Driver Standards:
- Fully compliant with Microsoft Windows Driver Model (WDM)
- Linux kernel module support (source-based installation)
- SCO OpenServer kernel integration via custom driver module

Regulatory Compliance:
- Designed to meet CE and FCC Class A industrial standards
- Manufactured under ISO 9001 quality management system

Industry Compatibility:
- Compatible with standard serial communication protocols
- Interoperable with industrial automation and networking equipment

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### 9. Additional Information

Warranty:
- Standard 1-year limited warranty covering defects in materials and workmanship.
- Excludes damage from misuse, unauthorized servicing, or electrical faults.

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

Maintenance Guidelines:
- Ensure proper grounding and avoid hot-swapping connector boxes.
- Maintain ambient temperature within specified operating range.
- Periodically inspect cables and connectors for wear or damage.

Upgrade Path:
- The P1048 system can be upgraded to intelligent processor-based solutions:
- P990F: Built-in Intel 80960JF local processor
- IOP3927F: Built-in 133MHz MIPS processor
- Existing NF116 connector boxes remain compatible with upgraded cards.

Manufacturer’s Note:
All product names and trademarks are the property of their respective owners. Rayon Technology reserves the right to modify specifications without prior notice to improve product performance and reliability.

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### Summary

The Rayon P1048 Universal PCIPORT Card represents a robust, scalable, and cost-effective solution for high-density RS232 serial communication. Its intelligent architecture, broad OS compatibility, and industrial-grade design make it ideal for demanding multi-user and automation environments. With support for 48 ports per card, single-IRQ resource efficiency, and modular expansion capability, the P1048 delivers exceptional performance and flexibility for system integrators and industrial communication applications.