MC PCI-DAS1602 Instrukcja Użytkownika Pobierz pdf (Strona 6)

Specifications PCI-DAS1602/16

Digital input / output

Table 9. Digital input/output specifications

82C55 emulation

Input 74LS244

Digital type

Output 74LS373

Number of I/O 24

2 banks of 8 and 2 banks of 4, or

3 banks of 8, or

Configuration

2 banks of 8 with handshake

Input high 2.0 volts min, 7 volts absolute max

Input low 0.8 volts max, -0.5 volts absolute min

Output high 2.4 volts min @ -15 mA

Output low 0.5 volts max @ 64 mA

Power-up / reset state Input mode (high impedance)

Pull-up/pull-down resistors

Provisions have been made on the board for user installed pull-up/pull-

down resistor networks

Simultaneous sample and hold trigger TTL output (SSH OUT).

Logic 0 = Hold

Logic 1 = Sample compatible with CIO-SSH16

Interrupts

Table 10. Interrupt specifications

Interrupt INTA# - mapped to IRQn via PCI BIOS at boot-time

Interrupt enable Programmable through PLX9052

Interrupt polarity Active high level or active low level, programmable through PLX9052

External (rising TTL edge event)

Residual counter

A/D End-of-conversion

A/D End-of-channel-scan

A/D FIFO-not-empty

A/D FIFO-half-full

D/A FIFO-not-empty

Interrupt sources

(software programmable)

D/A FIFO-half-full

1 2 3 4 5 6 7 8 9 10 11

Brak uwag

MC PCI-DAS1602 Instrukcja Użytkownika Strona 6