The NI PCI-6534 is a high-speed, 32-bit parallel digital I/O interface card for PCI bus systems. It delivers deterministic pattern generation and acquisition with integrated handshaking, supporting transfer rates up to 20 MHz for pattern I/O and 19.9 MHz for handshaking modes. The card incorporates 64 MB of onboard memory to maintain performance independent of host bus latency, making it ideal for functional test, chip validation, and digital communication applications.
Technical Specifications
Digital I/O Architecture
• 32 digital I/O lines organized as four configurable 8-bit ports
• Ports group into two 8-bit, 16-bit, or single 32-bit configurations
• 5 V TTL/CMOS logic levels
• Output drive: 24 mA sink, 24 mA source
• Input termination: diode-terminated for TTL levels
Performance
• Maximum transfer rate: 20 MHz (Pattern I/O), 19.9 MHz (Handshaking)
• Throughput: up to 80 MB/s for 32-bit transfers
• Transfer modes: Unstrobed I/O, Pattern I/O, Handshaking I/O, Static I/O, Single-Shot Pattern I/O
• Triggering: start/stop, pattern detection, change detection
Memory & Storage
• 64 MB onboard memory (two 32 MB modules)
• Supports configurable buffer sizes for input and output
• Enables deterministic rates independent of host computer bus
Electrical Characteristics
• Power requirement: 2 A at 5 V
• Input logic: 0 V to 0.8 V (low), 2 V to 5 V (high)
• Absolute maximum input: –0.3 V to 5 V
• Pull-up/pull-down: 2.2 kΩ (control), 100 kΩ (data)
• Power-on state: high-impedance with selectable termination
– Key Features
• Incorporates National Instruments DAQ-DIO ASIC for high-performance plug-in operation
• Flexible port grouping accommodates 8-bit, 16-bit, and 32-bit pattern operations
• Independent channel configuration as input or output
• Change detection triggering for event-driven acquisition
– Typical Applications
• Functional test and digital device validation
• High-speed chip characterization
• Digital stimulus and response measurement
– Compatibility & Integration
• Bus interface: PCI
• Connector: 68-pin male
• Part number: 778287-01
• Manufacturer: National Instruments
