1. Product Overview

Product Name: PIA-3410
Model Number: PIA-3410
Series: PC/104 Multi I/O Communication Module
Article Number: PIA-3410
Manufacturer: (Not explicitly stated; typically produced by an industrial embedded systems manufacturer specializing in PC/104 modules)

The PIA-3410 is a high-speed PC/104 multi I/O communication module designed for embedded and industrial computing applications. It integrates dual serial communication ports—one RS-232 and one configurable RS-232/RS-485—based on the UART16550 controller architecture. The module also provides multiple peripheral interfaces, including two IDE HDD connectors, two FDD connectors, and one EPP bidirectional parallel port, making it a versatile expansion board for embedded systems requiring robust serial and parallel communication capabilities.

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2. Key Features

- Dual Serial Communication Ports:
- COM1: RS-232 interface
- COM2: Configurable RS-232 or RS-485 interface via jumper selection (JP2)
- Both ports utilize the UART16550 chip, providing high-speed asynchronous serial communication with FIFO buffering for efficient data handling.

- Multi I/O Expansion:
- Two IDE connectors for hard disk drives (HDD)
- Two FDD connectors for floppy disk drives
- One EPP (Enhanced Parallel Port) bidirectional parallel interface supporting ECP/EPP modes

- PC/104 Bus Compatibility:
- Fully compliant with the PC/104 standard, allowing stackable embedded system integration without backplane wiring.
- Standard 104-pin connector (P1) for data and control signal interfacing.

- High-Speed UART16550 Controller:
- Integrated FIFO buffers (16-byte transmit/receive)
- Supports baud rates up to 115.2 kbps or higher depending on system clock
- Compatible with legacy COM port software and drivers

- Flexible Communication Configuration:
- Jumper-selectable RS-232/RS-485 mode for COM2
- ECP/EPP mode selection for the parallel port via jumper configuration
- DMA channel selection (DMA1 or DMA2) for ECP mode operation

- Industrial-Grade Design:
- Compact PC/104 form factor suitable for embedded and ruggedized environments
- Designed for reliable operation in industrial automation, data acquisition, and control systems

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3. Technical Specifications

- Form Factor: PC/104 (stackable embedded module)
- Bus Interface: PC/104 8-bit/16-bit ISA-compatible connector (P1)
- Serial Ports:
- COM1: RS-232 (DB9 or header via CN5)
- COM2: RS-232/RS-485 (configurable via CN6 and JP2)
- Parallel Port: 1 × EPP/ECP bidirectional port (standard 25-pin header or equivalent)
- Storage Interfaces:
- 2 × IDE HDD connectors (40-pin)
- 2 × FDD connectors (34-pin)
- Connectors:
- CN1–CN10: Internal headers for serial, parallel, IDE, and FDD connections
- JP1, JP2: Jumper blocks for mode and DMA configuration
- UART Controller: 16550-compatible UART with FIFO
- Baud Rate: Up to 115.2 kbps (standard), higher rates possible with custom clocking
- DMA Channels: Selectable DMA1 or DMA2 for ECP mode
- Power Supply: +5 V DC (from PC/104 bus)
- Dimensions: Standard PC/104 size (approx. 90 mm × 96 mm)
- Weight: Approximately 80–120 g (depending on connector configuration)
- Operating Temperature: Typically 0°C to +60°C (industrial versions may support -40°C to +85°C)
- Material: Multi-layer PCB with gold-plated edge connectors and industrial-grade components

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4. Functionality

The PIA-3410 functions as a multi-interface communication expansion module for embedded systems using the PC/104 bus. It provides both serial and parallel communication capabilities, enabling integration with a wide range of industrial devices such as sensors, controllers, modems, and legacy peripherals.

- Serial Communication:
The UART16550 controller manages asynchronous serial data transmission and reception. COM1 operates in RS-232 mode, while COM2 can be configured for either RS-232 or RS-485 communication. RS-485 mode supports multi-drop networking and long-distance communication, ideal for industrial automation and control networks.

- Parallel Communication:
The EPP/ECP parallel port supports bidirectional data transfer, suitable for printers, data acquisition modules, or custom parallel devices. ECP mode allows DMA-based high-speed data transfer.

- Storage Interfaces:
Dual IDE and FDD connectors allow connection of legacy storage devices, useful in embedded systems requiring local data logging or bootable storage.

- Applications:
- Industrial automation and control systems
- Data acquisition and monitoring
- Embedded computing platforms
- Communication gateways and protocol converters
- Legacy system integration and modernization

- Compatibility:
Compatible with standard PC/104 CPU modules and operating systems supporting legacy COM and LPT ports (e.g., DOS, Windows, Linux, RTOS environments).

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5. Components & Accessories

Included Components:
- PIA-3410 PC/104 module
- Onboard UART16550 controller
- Connectors: CN1–CN10 (serial, parallel, IDE, FDD)
- Jumpers: JP1, JP2 for configuration
- PC/104 stacking connector (P1)

Optional Accessories:
- Serial port cables (DB9 or DB25 breakout)
- Parallel port ribbon cable
- IDE and FDD ribbon cables
- Mounting hardware for PC/104 stack integration
- RS-485 terminal block adapter (optional)

Connectors Overview:
- CN5: COM1 RS-232 port
- CN6: COM2 RS-232/RS-485 port
- JP2: Mode selection jumper (RS-232 or RS-485)
- JP1: Configuration jumper (ECP/EPP mode, DMA selection)
- CN7–CN10: IDE/FDD and auxiliary connectors
- P1: PC/104 bus connector (data, address, control, and power lines)

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6. Installation & Setup

Requirements:
- Compatible PC/104 CPU or carrier board
- +5 V DC power supply via PC/104 bus
- Appropriate serial/parallel cables and connectors

Mounting Options:
- Stackable installation using PC/104 mounting holes and spacers
- Can be mounted above or below other PC/104 modules in the stack
- Secured using standard PC/104 mechanical fasteners

Configuration:
- Serial Mode Selection:
- JP2 jumper selects between RS-232 and RS-485 for COM2
- Default: RS-232 mode
- RS-485 mode enables differential signaling for long-distance communication

- Parallel Port Configuration:
- JP1 jumper selects ECP or EPP mode
- DMA channel selection (DMA1 or DMA2) for ECP operation

Setup Procedure:
1. Power off the system and disconnect power.
2. Mount the PIA-3410 onto the PC/104 stack using alignment pins.
3. Connect required cables (serial, parallel, IDE, FDD).
4. Configure jumpers (JP1, JP2) according to desired communication modes.
5. Power on the system and verify device recognition in BIOS or operating system.
6. Install necessary drivers if required (standard COM/LPT drivers typically suffice).

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7. Performance & Capabilities

- Serial Communication Speed: Up to 115.2 kbps (standard), with FIFO buffering for reduced CPU overhead.
- Parallel Port Throughput: ECP mode supports DMA-based high-speed data transfer up to several MB/s.
- Data Integrity: UART16550 FIFO ensures reliable data transmission with minimal loss.
- RS-485 Networking: Supports multi-drop communication with up to 32 devices on a single bus.
- Power Efficiency: Low power consumption due to efficient PC/104 bus design.
- Latency: Minimal communication latency suitable for real-time control applications.
- Limitations:
- Limited to legacy interface speeds (no USB or Ethernet)
- Requires proper termination for RS-485 networks
- Dependent on host CPU for driver and interrupt handling

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8. Standards & Compliance

- Bus Standard: PC/104 (IEEE P996.1 compatible)
- Serial Interface Standards:
- RS-232 (TIA/EIA-232-F)
- RS-485 (TIA/EIA-485-A)
- Parallel Interface Standards: IEEE 1284 (EPP/ECP modes)
- Electrical Compliance:
- TTL/CMOS logic levels for control signals
- 5 V DC power operation
- Environmental Compliance:
- RoHS-compliant components (depending on manufacturing batch)
- Designed for industrial temperature and vibration tolerance
- EMC/EMI: Meets typical industrial EMC standards when installed in compliant enclosures
- Quality Assurance: Manufactured under ISO 9001-certified processes (typical for PC/104 module vendors)

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9. Additional Information

- Warranty: Typically 1–2 years limited warranty covering manufacturing defects (varies by supplier).
- Technical Support:
- Documentation includes hardware manual, jumper configuration guide, and pinout diagrams.
- Support available via manufacturer’s technical service or distributor.
- Maintenance:
- No active cooling required; passive operation.
- Periodic inspection of connectors and jumpers recommended.
- Firmware updates not required (hardware-level communication module).
- Software Compatibility:
- Works with standard serial and parallel port drivers.
- Compatible with DOS, Windows, Linux, and RTOS environments supporting legacy I/O.
- Lifecycle & Availability:
- Long-term availability typical for industrial PC/104 products.
- Designed for embedded applications with extended product lifecycle support.

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Summary

The PIA-3410 UART16550 PC/104 Multi I/O Module is a compact, high-performance communication expansion board designed for embedded and industrial systems requiring reliable serial and parallel connectivity. With dual configurable COM ports, multiple storage interfaces, and a fully compliant PC/104 bus interface, it provides a flexible solution for integrating legacy and modern devices in embedded environments. Its jumper-configurable RS-232/RS-485 and ECP/EPP modes, combined with robust industrial design, make it ideal for automation, control, and data acquisition applications where stability, compatibility, and long-term support are essential.