Operation Theory; I/O Configuration - ADLINK Technology NuIPC cPCI-7300A User Manual

4

Operation Theory

This chapter
cPCI/PCI-7300A, including I/O configuration, block diagram, input/output FIFO,
bus -mastering DMA, scatter/gather, clocking mode, starting mode, termination,
I/O transfer mode, and auxiliary digital I/O.

4.1 I/O Configuration

The 32-bit I/O data path of PCI-7300A can be configured as 8-bit, 16-bit, or
32-bit, the possible configuration modes are listed as follows.
Mode
DI32
DO32
DI16DO16
(default mode)
DI16DO8
DI8DO16
DI8DO8
26 • Operation Theory
provides the detailed
Channel
PORTA (DI0...DI15)
PORTB (DI16..DI31)
PORTA
(DO16...DO31)
PORTB
(DO0...DO15)
PORTA (DI0...DI15)
PORTB
(DO0...DO15)
PORTA (DI0...DI15)
PORTB (DO0...DO7)
PORTA (DI0...DI7)
PORTB
(DO0...DO15)
PORTA (DI0...DI7)
PORTB (DO0...DO7)
operation information
Description
Both PORTA and PORTB
are configured as input
channel
Both PORTA and PORTB
are configured as output
channel
PORTA is 16-CH input
PORTB is 16-CH output
PORTA is 16-CH input
PORTB is 8-CH output
PORTA is 8-CH input
PORTB is 16-CH output
PORTA is 8-CH input
PORTB is 8-CH output
for the