adsp-21478 Analog Devices, Inc., adsp-21478 Datasheet - Page 25

• Manufacturer Part Number: adsp-21478
• Description: Sharc Processor
• Manufacturer: Analog Devices, Inc.

Preliminary Technical Data
Reset
Table 16. Reset
1
Running Reset
The following timing specification applies to RESET-
OUT/RUNRSTIN pin when it is configured as RUNRSTIN.
Table 17. Running Reset
Parameter
Timing Requirements
t
t
Applies after the power-up sequence is complete. At power-up, the processor’s internal phase-locked loop requires no more than 100 μs while RESET is low, assuming stable
Parameter
Timing Requirements
t
t
WRST
SRST
V
WRUNRST
SRUNRST
DD
1
and CLKIN (not including start-up time of external clock oscillator).
CLKIN
RESET Pulse Width Low
RESET Setup Before CLKIN Low
Running RESET Pulse Width Low
Running RESET Setup Before CLKIN High
RUNRSTIN
CLKIN
Rev. PrB | Page 25 of 70 | March 2010
t
WRUNRST
Figure 10. Running Reset
t
WRST
Figure 9. Reset
Min
4 × t
8
Min
4 × t
8
CK
CK
t
SRUNRST
ADSP-21478/ADSP-21479
t
SRST
Max
Max
Unit
ns
ns
Unit
ns
ns