Register Quick Reference—IP2022 User’s Manual 404 www.ubicom.com C.3.3 EMCFG Register CMPHYS Comparator hysteresis enable bit 0 =   Hysteresis disabled
1 =   Hysteresis enabled CMPRES Comparator result (read-only) 0 =   RG2 voltage > RG1
1 =   RG1 voltage > RG2 Name Description 7 6 5 3 2 0 EMEN EMBRT EMWRT2:0 EMRDT2:0 Name Description EMEN Enable external memory interface 0 =    Port C and Port D available for general-purpose           I/O
1 =    Port C and Port D used for external memory interface EMBRT Enable bus release wait state 0 =    No wait state
1 =    One wait state added between a read cycle fol- lowed by a write cycle