Datasheet

Rev. B | Page 26 of 68 | March 2013
ADSP-21483/ADSP-21486/ADSP-21487/ADSP-21488/ADSP-21489
Reset
Running Reset
The following timing specification applies to
RESETOUT/RUNRSTIN
pin when it is configured as
RUNRSTIN
.
Table 21. Reset
Parameter Min Max Unit
Timing Requirements
t
WRST
1
RESET Pulse Width Low 4 × t
CK
ns
t
SRST
RESET Setup Before CLKIN Low 8 ns
1
Applies after the power-up sequence is complete. At power-up, the processor’s internal phase-locked loop requires no more than 100 μ while RESET is low, assuming stable
V
DD
and CLKIN (not including start-up time of external clock oscillator).
Figure 8. Reset
CLKIN
RESET
t
SRST
t
WRST
Table 22. Running Reset
Parameter Min Max Unit
Timing Requirements
t
WRUNRST
Running RESET Pulse Width Low 4 × t
CK
ns
t
SRUNRST
Running RESET Setup Before CLKIN High 8 ns
Figure 9. Running Reset
CLKIN
RUNRSTIN
t
WRUNRST
t
SRUNRST