Datasheet

Rev. D | Page 22 of 56 | April 2013
ADSP-21371/ADSP-21375
Reset
Running Reset
The following timing specification applies to the RESETOUT/
RUNRSTIN pin when it is configured as RUNRSTIN.
Table 15. 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 s 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 16. 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