Register Quick Reference—IP2022 User’s Manual 394 www.ubicom.com C.2 Registers (sorted alphabetically) Table C-2 shows the addresses and reset values of all special-
purpose registers in data memory, sorted alphabetically by name. Table C-2  Register Addresses and Reset State Address Name Description Reset
Value 0x052 ADCCFG ADC configuration register 00000000 0x050 ADCH ADC value (high byte) 00000000 0x051 ADCL ADC value (low byte) 00000000 0x053 ADCTMR ADC timer register 00000000 0x010 ADDRH External/program memory pointer
(high byte) 00000000 0x011 ADDRL External/program memory pointer
(low byte) 00000000 0x002 ADDRSEL Selector for current external/pro-
gram memory pointer 00000000 0x003 ADDRX External/program memory pointer
(bits 23:16) 00000000 0x07E CALLH Top of call stack (high byte) 11111111 0x07F CALLL Top of call stack (low byte) 11111111 0x06F CMPCFG Comparator configuration register 0000000X 0x012 DATAH Program memory data (high byte) 00000000 0x013 DATAL Program memory data (low byte) 00000000 0x00C DPH Data Pointer (high byte) 00000000 0x00D DPL Data Pointer (low byte) 00000000