Toshiba TX39 (3) NMI* The NMI* signal is synchronized with the processor clock in phase with SYSCLK (Figure 2-5)., Figure 2-5 NMI* signal synchronization

TMPR3901F
213
(3) NMI*
The NMI* signal is synchronized with the processor clock in phase with SYSCLK (Figure 2-5).
Figure 2-5 NMI* signal synchronization
NMI detection
SYSCLK
NMI*(external)
NMI*(internal)
(a) Full-speed bus mode
Instruction at
interrupt
handler starts
FDEM
FDE
NMI detection
(b) Half-speed bus mode
FDEM
FDE
SYSCLK
Processor clock
NMI*(external)
Instruction at
interrupt
handler starts
NMI*(internal)