System Architecture—IP2022 User’s Manual 18 www.ubicom.com Figure 2-1  CPU Registers INTVECH/INTVECL Register W Register STATUS Register MULH Register SPDREG Register IPH/IPL Register DPH/DPL Register SPH/SPL Register DATAH/DATAL Register ADDRX/ADDRH/ADDRL Register 515-040.eps IPCH/IPCL Register 7 15 0 0 Interrupt Registers 15 0 Pointer Registers 15 0 Program Memory Interface Registers PCH/PCL Register 15 XCFG Register INTSPD Register ADDRSEL Register 23 7