REFERENCE (MODULE W*) PCI MEMORY MAP68C3 Operations Manual North Atlantic Industries, Inc. 12/19/2014Rev: 2014-12-19-0947 www.naii.com Page 296 of 330REFERENCE (MODULE W*) PCI MEMORY MAPModule Length = 800h200 Reference Frequency Lo R/W204 Reference Frequency Hi R/W208 Reference Voltage Lo R/W20C Reference Voltage Hi R/W220 Reference Overcurrent1 R/W768 Module Design Version R76C Module Design Revision R770 Module DSP R774 Module FPGA R778 Module ID R1C0 Power On R/WNote1: Reference over-current added for DOM 8/2010 and later.