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- Dual RS232 Ports: Two independent RS232 serial communication ports for connecting serial devices such as modems, terminals, or industrial controllers.
- 16550A UART Compatibility: Each port includes a 16-byte transmit and receive FIFO buffer, reducing CPU overhead and improving data throughput.
- Plug & Play PCI Interface: Fully compliant with PCI Local Bus Specification Rev. 2.1, with automatic resource assignment (I/O address and IRQ) by the PCI BIOS.
- Shared IRQ Support: The card supports IRQ sharing, allowing multiple PCI devices to coexist efficiently.
- High-Speed Communication: Supports baud rates from 50 bps up to 115.2 Kbps (with 1.8432 MHz crystal) or up to 921.6 Kbps (with optional 14.7456 MHz crystal).
- Flexible Flow Control: Supports both hardware (RTS/CTS) and software (Xon/Xoff) flow control mechanisms.
- Broad OS Compatibility: Drivers available for DOS, Windows 95/98/ME/NT/2000/XP, Linux, and SCO OpenServer.
- Compact Design: Standard PCI form factor with dimensions of 140 mm x 102 mm, suitable for most desktop and industrial PC enclosures.
- Robust Construction: Built with high-quality Rayon PCB materials ensuring durability and signal integrity.
- Universal PCI Voltage Support: Operates in both 5V and 3.3V PCI slots (universal PCI compatibility).
- 16550A UART Compatibility: Each port includes a 16-byte transmit and receive FIFO buffer, reducing CPU overhead and improving data throughput.
- Plug & Play PCI Interface: Fully compliant with PCI Local Bus Specification Rev. 2.1, with automatic resource assignment (I/O address and IRQ) by the PCI BIOS.
- Shared IRQ Support: The card supports IRQ sharing, allowing multiple PCI devices to coexist efficiently.
- High-Speed Communication: Supports baud rates from 50 bps up to 115.2 Kbps (with 1.8432 MHz crystal) or up to 921.6 Kbps (with optional 14.7456 MHz crystal).
- Flexible Flow Control: Supports both hardware (RTS/CTS) and software (Xon/Xoff) flow control mechanisms.
- Broad OS Compatibility: Drivers available for DOS, Windows 95/98/ME/NT/2000/XP, Linux, and SCO OpenServer.
- Compact Design: Standard PCI form factor with dimensions of 140 mm x 102 mm, suitable for most desktop and industrial PC enclosures.
- Robust Construction: Built with high-quality Rayon PCB materials ensuring durability and signal integrity.
- Universal PCI Voltage Support: Operates in both 5V and 3.3V PCI slots (universal PCI compatibility).
Comprehensive Product Summary – Rayon Technology P232 PCI 2-Port RS232 Card
### 1. Product Overview
Product Name: PCI 2-Port RS232 Card
Model: P232
Series: RAYON PCIPORT Series
Article Number: P232
Manufacturer: Rayon Technology Inc.
Manufacturer Address:
Rayon Technology Co. Ltd., 2F, No. 177, Chung-Shan 2 Road, Lu-Chou City, Taipei Hsien, Taiwan R.O.C.
European Support Partner: Acceed GmbH, Arnoldstraße 19, 40479 Düsseldorf, Germany
Manual Revision: Rev. 1.00, October 19, 2003
The Rayon P232 is a PCI-based intelligent dual-port serial communication card designed for PC/AT systems equipped with a 5V or 3.3V 33MHz PCI bus. It provides two RS232 serial ports, each fully compatible with the industry-standard 16550A UART, supporting data rates from 50 bps up to 115,200 bps. The card is engineered for plug-and-play operation, automatically configured by the PCI BIOS, and supports a wide range of operating systems including DOS, Windows 95/98/ME/NT/2000/XP, Linux, and SCO OpenServer.
### 2. Key Features
- Dual RS232 Ports: Two independent RS232 serial communication ports for connecting serial devices such as modems, terminals, or industrial controllers.
- 16550A UART Compatibility: Each port includes a 16-byte transmit and receive FIFO buffer, reducing CPU overhead and improving data throughput.
- Plug & Play PCI Interface: Fully compliant with PCI Local Bus Specification Rev. 2.1, with automatic resource assignment (I/O address and IRQ) by the PCI BIOS.
- Shared IRQ Support: The card supports IRQ sharing, allowing multiple PCI devices to coexist efficiently.
- High-Speed Communication: Supports baud rates from 50 bps up to 115.2 Kbps (with 1.8432 MHz crystal) or up to 921.6 Kbps (with optional 14.7456 MHz crystal).
- Flexible Flow Control: Supports both hardware (RTS/CTS) and software (Xon/Xoff) flow control mechanisms.
- Broad OS Compatibility: Drivers available for DOS, Windows 95/98/ME/NT/2000/XP, Linux, and SCO OpenServer.
- Compact Design: Standard PCI form factor with dimensions of 140 mm x 102 mm, suitable for most desktop and industrial PC enclosures.
- Robust Construction: Built with high-quality Rayon PCB materials ensuring durability and signal integrity.
- Universal PCI Voltage Support: Operates in both 5V and 3.3V PCI slots (universal PCI compatibility).
### 3. Technical Specifications
| Parameter | Specification |
|----------------|-------------------|
| Bus Interface | PCI Local Bus Specification Rev. 2.1 |
| Bus Frequency | 33 MHz |
| Bus Voltage | 5V or 3.3V (Universal PCI) |
| Ports | 2 x RS232 |
| UART Type | 16C550A compatible |
| Baud Rate | 50 bps – 115,200 bps (standard), up to 921,600 bps (optional crystal) |
| Flow Control | RTS/CTS or Xon/Xoff |
| Interrupt Control | Plug & Play, IRQ shareable |
| I/O Mapping | Assigned automatically by PCI BIOS |
| Connector Type | Two DB9 male connectors |
| Dimensions | 140 mm (L) × 102 mm (W) |
| Material | Rayon PCB, high-quality electronic components |
| Operating Environment | PC/AT compatible systems with PCI slots |
| Operating Voltage | 5V DC (PCI bus powered) |
| Operating Temperature | 0°C to 55°C (typical) |
| Storage Temperature | -20°C to 85°C |
| Relative Humidity | 5% to 95% non-condensing |
| Weight | Approx. 100 g (card only) |
### 4. Functionality
The P232 card functions as a dual-port serial communication interface for PCI-based systems. Each port operates independently, providing full-duplex asynchronous serial communication. The card’s onboard 16550A-compatible UARTs include 16-byte FIFO buffers for both transmit and receive channels, minimizing CPU interrupts and improving system performance during high-speed data transfers.
Use Cases and Applications:
- Industrial automation and control systems
- Serial device networking (modems, barcode scanners, PLCs)
- POS (Point-of-Sale) systems
- Data acquisition and instrumentation
- Legacy serial device integration in modern PCs
Compatibility:
- Fully compatible with standard RS232C signaling levels.
- Works with standard DB9 serial cables and connectors.
- Compatible with all major operating systems supporting serial communication.
### 5. Components & Accessories
Included Items:
- 1 × P232 PCI 2-Port RS232 Card
- 1 × User Manual
- 1 × Driver Diskette (DOS/Windows/Linux/SCO drivers)
Optional Accessories:
- DB9-to-DB25 adapter cables
- TB485 converter (for DB9 to terminal block RS485 conversion, optional for other models)
- Anti-static packaging and installation guide
Connectors:
- Two DB9 male connectors directly on the card bracket.
- Each connector provides standard RS232 pinout as defined below:
| Pin | Signal | Direction | Description |
|----------|-------------|---------------|-----------------|
| 1 | DCD | Input | Data Carrier Detect |
| 2 | RXD | Input | Receive Data |
| 3 | TXD | Output | Transmit Data |
| 4 | DTR | Output | Data Terminal Ready |
| 5 | GND | — | Signal Ground |
| 6 | DSR | Input | Data Set Ready |
| 7 | RTS | Output | Request to Send |
| 8 | CTS | Input | Clear to Send |
| 9 | RI | Input | Ring Indicator |
### 6. Installation & Setup
System Requirements:
- PC/AT compatible system with an available PCI slot (5V or 3.3V).
- Supported operating system (DOS, Windows 95/98/ME/NT/2000/XP, Linux, SCO).
Installation Procedure:
1. Power off the computer and unplug it from the power source.
2. Insert the P232 card into an available PCI slot.
3. Secure the card with the chassis screw.
4. Power on the system; the PCI BIOS will automatically detect and configure the card.
5. Install the appropriate driver for your operating system from the provided diskette.
Driver Installation Paths:
- DOS: `A:\DOS\P220\P984`
- Windows 95/98/ME: `A:\WIN95`
- Windows NT4: `A:\P220\NT4`
- Windows 2000/XP: `A:\WIN2000`
- Linux: `/etc/rayon` (via `Install` script)
- SCO OpenServer: `/etc/pciport` (via `build` command)
Jumper Configuration:
- JP1: Card number selection
- ON = First card
- OFF = Second card (for multi-card systems)
Mounting Options:
- Standard PCI slot mounting with rear bracket access to DB9 connectors.
- No external power required; powered directly from PCI bus.
### 7. Performance & Capabilities
- Data Throughput: Up to 115.2 Kbps per port (standard crystal), up to 921.6 Kbps (optional).
- Buffering: 16-byte transmit and receive FIFO per port.
- Interrupt Handling: Shared IRQ support for multiple PCI devices.
- Latency Reduction: Intelligent buffering minimizes CPU interrupts, improving multitasking performance.
- System Load: Low CPU utilization due to hardware buffering and efficient driver design.
- Reliability: Stable operation under continuous data transmission; designed for industrial and commercial environments.
- Limitations:
- Supports only RS232 signaling (no RS422/485 on this model).
- Limited to two ports per card; for higher port counts, other RAYON models (P584, P588) are available.
### 8. Standards & Compliance
- PCI Local Bus Specification: Revision 2.1 compliant
- Serial Interface Standard: RS232C (EIA/TIA-232)
- UART Compatibility: 16C550A standard
- Electrical Compliance: 5V/3.3V PCI signaling
- Operating System Compliance:
- Microsoft Windows 95/98/ME/NT/2000/XP
- DOS
- Linux (kernel 2.4.x and above, source-based driver installation)
- SCO OpenServer
- EMC & Safety: Designed to meet CE and FCC Class B requirements (typical for PCI I/O cards).
- Environmental Compliance: RoHS (for later production batches).
### 9. Additional Information
Warranty:
- One-year limited warranty covering defects in materials and workmanship.
- Excludes damage from misuse, electrical surges, or unauthorized modifications.
- Out-of-warranty repairs available at a flat-rate service charge.
Support & Service Contacts:
- Rayon Technology (Taiwan):
- Tel: +886 2 82858362
- Fax: +886 2 82857065
- Email: rayon@ms1.hinet.net
- Acceed GmbH (Europe):
- Tel: +49 211 938898 0
- Fax: +49 211 938898 0
- Email: rayon@acceed.com
- Web: [www.acceed.com/rayon](http://www.acceed.com/rayon)
Repair & RMA Procedure:
- Obtain an RMA number before returning any product.
- Provide model number, serial number, reason for return, and purchase order reference.
- Products found defective under warranty will be repaired free of charge.
- Non-defective or out-of-warranty products may incur handling and testing fees.
Maintenance:
- Keep the card free from dust and static discharge.
- Handle only with grounded anti-static wristbands and mats.
- Avoid inserting or removing the card while the system is powered on.
Software Updates:
- Updated drivers and installation utilities available from Rayon or Acceed support sites.
- Linux driver source code provided for kernel integration and customization.
Troubleshooting Highlights:
- If the card is not detected, verify PCI slot functionality and clean contacts.
- Ensure correct driver path during installation (e.g., avoid using WIN95 driver for WIN2000).
- For communication issues, test with loopback connector and terminal utility (RAYONTTY.EXE).
- Check for IRQ conflicts with other PCI or ISA devices.
### Summary
The Rayon P232 PCI 2-Port RS232 Card is a robust, high-performance serial communication interface designed for industrial, commercial, and legacy integration applications. Its dual 16550A-compatible UARTs, plug-and-play PCI architecture, and broad OS support make it a versatile solution for expanding serial connectivity in modern systems. With automatic resource configuration, shared IRQ capability, and reliable driver support across multiple platforms, the P232 delivers stable and efficient serial communication performance.
Engineered by Rayon Technology Inc., the P232 exemplifies the company’s commitment to connectivity, reliability, and cross-platform compatibility in serial communication hardware.
### 1. Product Overview
Product Name: PCI 2-Port RS232 Card
Model: P232
Series: RAYON PCIPORT Series
Article Number: P232
Manufacturer: Rayon Technology Inc.
Manufacturer Address:
Rayon Technology Co. Ltd., 2F, No. 177, Chung-Shan 2 Road, Lu-Chou City, Taipei Hsien, Taiwan R.O.C.
European Support Partner: Acceed GmbH, Arnoldstraße 19, 40479 Düsseldorf, Germany
Manual Revision: Rev. 1.00, October 19, 2003
The Rayon P232 is a PCI-based intelligent dual-port serial communication card designed for PC/AT systems equipped with a 5V or 3.3V 33MHz PCI bus. It provides two RS232 serial ports, each fully compatible with the industry-standard 16550A UART, supporting data rates from 50 bps up to 115,200 bps. The card is engineered for plug-and-play operation, automatically configured by the PCI BIOS, and supports a wide range of operating systems including DOS, Windows 95/98/ME/NT/2000/XP, Linux, and SCO OpenServer.
### 2. Key Features
- Dual RS232 Ports: Two independent RS232 serial communication ports for connecting serial devices such as modems, terminals, or industrial controllers.
- 16550A UART Compatibility: Each port includes a 16-byte transmit and receive FIFO buffer, reducing CPU overhead and improving data throughput.
- Plug & Play PCI Interface: Fully compliant with PCI Local Bus Specification Rev. 2.1, with automatic resource assignment (I/O address and IRQ) by the PCI BIOS.
- Shared IRQ Support: The card supports IRQ sharing, allowing multiple PCI devices to coexist efficiently.
- High-Speed Communication: Supports baud rates from 50 bps up to 115.2 Kbps (with 1.8432 MHz crystal) or up to 921.6 Kbps (with optional 14.7456 MHz crystal).
- Flexible Flow Control: Supports both hardware (RTS/CTS) and software (Xon/Xoff) flow control mechanisms.
- Broad OS Compatibility: Drivers available for DOS, Windows 95/98/ME/NT/2000/XP, Linux, and SCO OpenServer.
- Compact Design: Standard PCI form factor with dimensions of 140 mm x 102 mm, suitable for most desktop and industrial PC enclosures.
- Robust Construction: Built with high-quality Rayon PCB materials ensuring durability and signal integrity.
- Universal PCI Voltage Support: Operates in both 5V and 3.3V PCI slots (universal PCI compatibility).
### 3. Technical Specifications
| Parameter | Specification |
|----------------|-------------------|
| Bus Interface | PCI Local Bus Specification Rev. 2.1 |
| Bus Frequency | 33 MHz |
| Bus Voltage | 5V or 3.3V (Universal PCI) |
| Ports | 2 x RS232 |
| UART Type | 16C550A compatible |
| Baud Rate | 50 bps – 115,200 bps (standard), up to 921,600 bps (optional crystal) |
| Flow Control | RTS/CTS or Xon/Xoff |
| Interrupt Control | Plug & Play, IRQ shareable |
| I/O Mapping | Assigned automatically by PCI BIOS |
| Connector Type | Two DB9 male connectors |
| Dimensions | 140 mm (L) × 102 mm (W) |
| Material | Rayon PCB, high-quality electronic components |
| Operating Environment | PC/AT compatible systems with PCI slots |
| Operating Voltage | 5V DC (PCI bus powered) |
| Operating Temperature | 0°C to 55°C (typical) |
| Storage Temperature | -20°C to 85°C |
| Relative Humidity | 5% to 95% non-condensing |
| Weight | Approx. 100 g (card only) |
### 4. Functionality
The P232 card functions as a dual-port serial communication interface for PCI-based systems. Each port operates independently, providing full-duplex asynchronous serial communication. The card’s onboard 16550A-compatible UARTs include 16-byte FIFO buffers for both transmit and receive channels, minimizing CPU interrupts and improving system performance during high-speed data transfers.
Use Cases and Applications:
- Industrial automation and control systems
- Serial device networking (modems, barcode scanners, PLCs)
- POS (Point-of-Sale) systems
- Data acquisition and instrumentation
- Legacy serial device integration in modern PCs
Compatibility:
- Fully compatible with standard RS232C signaling levels.
- Works with standard DB9 serial cables and connectors.
- Compatible with all major operating systems supporting serial communication.
### 5. Components & Accessories
Included Items:
- 1 × P232 PCI 2-Port RS232 Card
- 1 × User Manual
- 1 × Driver Diskette (DOS/Windows/Linux/SCO drivers)
Optional Accessories:
- DB9-to-DB25 adapter cables
- TB485 converter (for DB9 to terminal block RS485 conversion, optional for other models)
- Anti-static packaging and installation guide
Connectors:
- Two DB9 male connectors directly on the card bracket.
- Each connector provides standard RS232 pinout as defined below:
| Pin | Signal | Direction | Description |
|----------|-------------|---------------|-----------------|
| 1 | DCD | Input | Data Carrier Detect |
| 2 | RXD | Input | Receive Data |
| 3 | TXD | Output | Transmit Data |
| 4 | DTR | Output | Data Terminal Ready |
| 5 | GND | — | Signal Ground |
| 6 | DSR | Input | Data Set Ready |
| 7 | RTS | Output | Request to Send |
| 8 | CTS | Input | Clear to Send |
| 9 | RI | Input | Ring Indicator |
### 6. Installation & Setup
System Requirements:
- PC/AT compatible system with an available PCI slot (5V or 3.3V).
- Supported operating system (DOS, Windows 95/98/ME/NT/2000/XP, Linux, SCO).
Installation Procedure:
1. Power off the computer and unplug it from the power source.
2. Insert the P232 card into an available PCI slot.
3. Secure the card with the chassis screw.
4. Power on the system; the PCI BIOS will automatically detect and configure the card.
5. Install the appropriate driver for your operating system from the provided diskette.
Driver Installation Paths:
- DOS: `A:\DOS\P220\P984`
- Windows 95/98/ME: `A:\WIN95`
- Windows NT4: `A:\P220\NT4`
- Windows 2000/XP: `A:\WIN2000`
- Linux: `/etc/rayon` (via `Install` script)
- SCO OpenServer: `/etc/pciport` (via `build` command)
Jumper Configuration:
- JP1: Card number selection
- ON = First card
- OFF = Second card (for multi-card systems)
Mounting Options:
- Standard PCI slot mounting with rear bracket access to DB9 connectors.
- No external power required; powered directly from PCI bus.
### 7. Performance & Capabilities
- Data Throughput: Up to 115.2 Kbps per port (standard crystal), up to 921.6 Kbps (optional).
- Buffering: 16-byte transmit and receive FIFO per port.
- Interrupt Handling: Shared IRQ support for multiple PCI devices.
- Latency Reduction: Intelligent buffering minimizes CPU interrupts, improving multitasking performance.
- System Load: Low CPU utilization due to hardware buffering and efficient driver design.
- Reliability: Stable operation under continuous data transmission; designed for industrial and commercial environments.
- Limitations:
- Supports only RS232 signaling (no RS422/485 on this model).
- Limited to two ports per card; for higher port counts, other RAYON models (P584, P588) are available.
### 8. Standards & Compliance
- PCI Local Bus Specification: Revision 2.1 compliant
- Serial Interface Standard: RS232C (EIA/TIA-232)
- UART Compatibility: 16C550A standard
- Electrical Compliance: 5V/3.3V PCI signaling
- Operating System Compliance:
- Microsoft Windows 95/98/ME/NT/2000/XP
- DOS
- Linux (kernel 2.4.x and above, source-based driver installation)
- SCO OpenServer
- EMC & Safety: Designed to meet CE and FCC Class B requirements (typical for PCI I/O cards).
- Environmental Compliance: RoHS (for later production batches).
### 9. Additional Information
Warranty:
- One-year limited warranty covering defects in materials and workmanship.
- Excludes damage from misuse, electrical surges, or unauthorized modifications.
- Out-of-warranty repairs available at a flat-rate service charge.
Support & Service Contacts:
- Rayon Technology (Taiwan):
- Tel: +886 2 82858362
- Fax: +886 2 82857065
- Email: rayon@ms1.hinet.net
- Acceed GmbH (Europe):
- Tel: +49 211 938898 0
- Fax: +49 211 938898 0
- Email: rayon@acceed.com
- Web: [www.acceed.com/rayon](http://www.acceed.com/rayon)
Repair & RMA Procedure:
- Obtain an RMA number before returning any product.
- Provide model number, serial number, reason for return, and purchase order reference.
- Products found defective under warranty will be repaired free of charge.
- Non-defective or out-of-warranty products may incur handling and testing fees.
Maintenance:
- Keep the card free from dust and static discharge.
- Handle only with grounded anti-static wristbands and mats.
- Avoid inserting or removing the card while the system is powered on.
Software Updates:
- Updated drivers and installation utilities available from Rayon or Acceed support sites.
- Linux driver source code provided for kernel integration and customization.
Troubleshooting Highlights:
- If the card is not detected, verify PCI slot functionality and clean contacts.
- Ensure correct driver path during installation (e.g., avoid using WIN95 driver for WIN2000).
- For communication issues, test with loopback connector and terminal utility (RAYONTTY.EXE).
- Check for IRQ conflicts with other PCI or ISA devices.
### Summary
The Rayon P232 PCI 2-Port RS232 Card is a robust, high-performance serial communication interface designed for industrial, commercial, and legacy integration applications. Its dual 16550A-compatible UARTs, plug-and-play PCI architecture, and broad OS support make it a versatile solution for expanding serial connectivity in modern systems. With automatic resource configuration, shared IRQ capability, and reliable driver support across multiple platforms, the P232 delivers stable and efficient serial communication performance.
Engineered by Rayon Technology Inc., the P232 exemplifies the company’s commitment to connectivity, reliability, and cross-platform compatibility in serial communication hardware.
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PCI-Port-015.pdf
Manual
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