The PMC-HPDI32B-COS is a 32-bit parallel Change of State Detection board featuring high speed RS485 interface transceivers. The Change of State detection is can be customized to ignore specific bits and to provide an interrupt after a specified number of change of state events have occurred. The board will also function as a simple Logic Analyzer with a configurable trigger value and mask. The sample rate for both Change of State and Logic Analyzer is programmable from 20MHz down to 300Hz.
Received values are buffered in an 8K deep on-board FIFO which is easily accessed by the integrated a DMA Controller. After the DMA is initialized and started, the host CPU will be free to proceed with other duties and need to respond only to interrupts. The DMA controller is capable of transferring data to host memory using D32 transfers; whereas the FIFO memory provides a means for continuous transmission of data without interrupting the DMA or requiring intervention from the host CPU.
Received values are buffered in an 8K deep on-board FIFO which is easily accessed by the integrated a DMA Controller. After the DMA is initialized and started, the host CPU will be free to proceed with other duties and need to respond only to interrupts. The DMA controller is capable of transferring data to host memory using D32 transfers; whereas the FIFO memory provides a means for continuous transmission of data without interrupting the DMA or requiring intervention from the host CPU.
