Fujitsu MB89140 Series Hardware Manual page 86

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HARDWARE CONFIGURATION
The DTTI input pin makes the PWM output inactive at hardware in the event
12-BIT MULTIPUL
of an external error. With the DTTI input enabled, when an error is detected,
GENERATOR
the DTIR flag is set to inactivate the PWM output. The time required for this
(MPG, TIMER 4)
operation is 6 to 8 clock cycles.
Since the DTTI input is edge input, the rising or falling edge can be selected.
To restart the PWM output after recovery from an error, the DTIR flag must
be cleared to provide the effective trigger input. In the event of an interrupt at
DTTI input, other interrupt sources may be set. Therefore, to restart, all
MPG interrupt sources should be cleared. The DTTI input block has a noise
filter.
2-66

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