adsp-21061l Analog Devices, Inc., adsp-21061l Datasheet - Page 22

• Manufacturer Part Number: adsp-21061l
• Description: Commercial Grade Sharc Family Dsp Microcomputer
• Manufacturer: Analog Devices, Inc.

ADSP-21061/ADSP-21061L
Clock Input
Table 7. Clock Input
Reset
Table 8. Reset
1
2
Parameter
Timing Requirements
t
t
t
t
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
Only required if multiple ADSP-21061s must come out of reset synchronous to CLKIN with program counters (PC) equal. Not required for multiple ADSP-21061s commu-
CK
CKL
CKH
CKRF
WRST
SRST
V
nicating over the shared bus (through the external port), because the bus arbitration logic automatically synchronizes itself after reset.
DD
and CLKIN (not including startup time of external clock oscillator).
CLKIN Period
CLKIN Width Low
CLKIN Width High
CLKIN Rise/Fall (0.4 V to 2.0 V)
RESET Pulse Width Low
RESET Setup Before CLKIN High
RESET
CLKIN
CLKIN
1
2
Min
20
7
5
ADSP-21061
50 MHz, 5 V
Rev. C | Page 22 of 56 | July 2007
Figure 9. Clock Input
t
Max
100
3
Figure 10. Reset
CKH
Min
22.5
7
5
t
WRST
ADSP-21061L
44 MHz, 3.3 V
t
t
CK
CKL
Min
4t
14 + DT/2
CK
Max
100
3
Min
25
7
5
ADSP-21061L
ADSP-21061/
5 V and 3.3 V
t
SRST
5 V and 3.3 V
40 MHz,
Max
100
3
Max
t
CK
Min
30
7
5
ADSP-21061
33 MHz, 5 V
Max
100
3
Unit
ns
ns
Unit
ns
ns
ns
ns