The GX5732 provides 224 digital Inputs or Outputs and 4 counters. The 224 TTL channels’ direction is programmable and can be set for Input or Output in groups of eight. The GX5732 has no on-board memory and it uses software driver to set or get the channels level and direction. The figure below shows a typical I/O channel block diagram:
Typical I/O Channel
The GX5732 consist of seven 32-bit parallel input/output ports. Each port interfaces through a 68 pins SCSI connector (J7 to J13).
The GX5732 contains four 8-bit counters. The counters can be loaded from the PXI bus or from the 8-bit Counter Port accessible from J6 (CP0-7 pins in J6 connector). Each counter has a Terminal Count signal that changes when the counter overflows. The signal can be routed to the TCP0-3 pins in JP6 connector or to the Carryout signal that goes to the next counter to form a 16, 24 or 32-bit counter using sibling counter(s).
Two internal clock sources can be used to drive the counter. Each of the clocks can be configured by the 10MHz PXI clock, or the 33 MHz PCI Bus clock or any one of the 6 User Lines pins on the J6 connector (UL0-5).
The 6 User Lines input from J6 connector can be configured to drive the counter gate or clock.
The following figures: GX5732 Counters, figure: GX5732 Counter 0 Typical and figure: GX5732 Terminal Count Port presents block diagram for the GX5732 counters.
.jpg "GX5732 Counter 0 (Typical)")
