IP2022 User’s Manual—Register Quick Reference www.ubicom.com 395 0x01D EMCFG External memory configuration regis-
ter 00000000 0x01A FCFG Flash configuration register 00000000 0x018 INTE Port B interrupt enable bits 00000000 0x019 INTED Port B interrupt edge select bits 00000000 0x017 INTF Port B interrupt flags Undefined 0x016 INTSPD Interrupt speed register 00000000 0x014 INTVECH Interrupt vector (high byte) 00000000 0x015 INTVECL Interrupt vector (low byte) 00000000 0x01E IPCH Interrupt return address (high byte) 00000000 0x01F IPCL Interrupt return address (low byte) 00000000 0x004 IPH Indirect Pointer (high byte) 00000000 0x005 IPL Indirect Pointer (low byte) 00000000 0x02B LFSRA LFSR address register 00000000 0x023 LFSRH LFSR data register (high byte) 00000000 0x027 LFSRL LFSR data register (low byte) 00000000 0x00F MULH Multiply result (high byte) 00000000 0x008 PCH Current PC bits 15:8 (read-only) 11111111 0x009 PCL Virtual register for direct PC modifi-
cation 11110000 0x06E PSPCFG Parallel slave peripheral configura-
tion register 00000000 0x022 RADIR Port A direction register 11111111 Table C-2  Register Addresses and Reset State (continued) Address Name Description Reset
Value