А такая последовательность JTAG команд что показывает?
CODE
TRST ABSENT;
ENDDR IDLE;
ENDIR IRPAUSE;
STATE IDLE;
SIR 10 TDI (2CC); ! ISC_ENABLE
RUNTEST IDLE 18003 TCK ENDSTATE IDLE;
!
!
!
SIR 10 TDI (203); ! ISC_ADDRESS_SHIFT
RUNTEST 93 TCK;
SDR 14 TDI (0000); ! ADDR = 0000
SIR 10 TDI (205); ! ISC_READ
RUNTEST 93 TCK;
SDR 16 TDI (FFFF) TDO (6BFF) MASK (FBFF); ! 7BFF, 6BFF <===== ????
RUNTEST 53 TCK;
!
!
!
SIR 10 TDI (201); ! ISC_DISABLE
RUNTEST 18003 TCK;
SIR 10 TDI (3FF);
RUNTEST 18000 TCK;
STATE IDLE;