MachXO5: What means ATB_FORCE and ATB_SENSE?
ATB_Force and ATB_Sense are pins used for monitoring signals in the Manufacturing Block (Block that generate an interface for testing setup of programming flash and electrical characteristics of various transistors). ATB_Force is an INOUT pin that monitor signal output or Force Signal in , connected to pad directly, no buffer inserted in path of mfg_blk to pad, While ATB_Sense is an Output pin that Monitor signal output, connected to pad directly, no buffer inserted in path of mfg_blk to pad.