Measurement Computing PCI-DIO96 - Manual (Page 14)

14
Chapter 3
Functional Details
PCI-DIO96 block diagram
PCI-DIO96 functions are illustrated in the block diagram shown here.
PCI BUS (5V, 32-bit, 33 MHz)
PCI
Controller BADR3
Boot
EEPROM
Control
Registers
Decode/Status
Controller FPGA and Logic
Local Bus
Control
Bus
PLX-9052
Counters
82C54
INT.
82C55
82C55
82C55
82C55
FIRSTPORTA
FIRSTPORTB
C
o
n
tr
o
l
DIO Group 0
FIRSTPORTCH
SECONDPORTA
SECONDPORTB
C
o
n
tr
o
l
DIO Group 1
THIRDPORTA
THIRDPORTB
C
o
n
tr
o
l
DIO Group 2
THIRDPORT H C
FOURTHPORTA
FOURTHPORTB
C
o
n
tr
o
l
DIO Group 3
FOURTHPORTCH
FIRSTPORTA(7:0)
FIRSTPORTB(7:0)
FIRSTPORTCH(3:0)
THIRDPORTA(7:0)
THIRDPORTB(7:0)
THIRDPORTCH(3:0)
FIRSTPORTCL(3:0) FIRSTPORTCL
SECONDPORTA(7:0)
SECONDPORTB(7:0)
SECONDPORTCH(3:0)
SECONDPORTCL(3:0)
SECONDPORTCH
SECONDPORTCL
THIRDPORTCL THIRDPORTCL(3:0)
FOURTHPORTCH
FOURTHPORTCL
FOURTHPORTA(7:0)
FOURTHPORTB(7:0)
FOURTHPORTCH(3:0)
FOURTHPORTCL(3:0)
Figure 3. PCI-DIO96 functional block diagram