AT-MIO-16D

National Instruments AT-MIO-16D Multifunction I/O Board
Features

• Combines the Functionality of the AT-MIO-16 and the PC-DIO-24
• Contains Two Logical Sections
• Timer-Generated Interrupts
• High-Performance RTSI Bus Interface
• Full PC AT I/O Channel DMA Capability

The National Instruments AT-MIO-16D is part of the NI AT Series of expansion boards for IBM PC AT and compatible computers. It combines the functionality of 2 popular NI boards, the AT-MIO-16 and the PC-DIO-24. The AT-MIO-16 contains 2 logical sections - the MIO-16 circuitry and the DIO-24 circuitry.

The MIO-16 circuitry of the AT-MIO-16D is a high-performance multifunction analog, digital, and timing I/O circuit for the PC. It contains a 12-bit ADC with up to 16 analog inputs, 2 12-bit DACs with voltage outputs, 8 lines of transistor-transistor logic (TTL) compatible digital I/O, and 3 16-bit counter/timer channels for timing I/O. It also has a 9-µsec converter, a 512-word A/D FIFO buffer, onboard timers for waveform generation, a high-performance RTSI bus interface with 4 triggers for system-level timing, and full PC AT I/O channel DMA capability.

The DIO-24 circuitry is a 24-bit parallel, digital I/O interface for the PC, controlled by an 82C55A PPI. The 82C55A can operate in either a unidirectional or bidirectional mode, can generate interrupt request outputs, and can be programmed for almost any 8-bit or 16-bit digital I/O application.