ABOUT V645
The V645 is a single-width, C-size, register-based, VXIbus module that contains a 16-bit counter and eight 16-bit set-point registers that are compared with the counter. The comparisons produce output pulses, and any of them can be used to either stop or clear the counter. The comparisons also produce interrupt source bits which can be individually enabled to produce interrupt requests.
Features
Eight independent outputs
Self-contained crystal clock
Provision for external clock
Options for high-true or low-true output pulses
Interrupt source bits associated with each output channel
8-bit interrupt mask register
Clock rates from 1 Hz to 1 MHz in decade steps
Ability to cycle through any number of channels from one to eight