ADSP-2109 AD [Analog Devices], ADSP-2109 Datasheet - Page 28

• Manufacturer Part Number: ADSP-2109
• Description: Low Cost DSP Microcomputers
• Manufacturer: AD [Analog Devices]

ADSP-2104/ADSP-2109
TIMING PARAMETERS (ADSP-2104L/ADSP-2109L)
CLOCK SIGNALS & RESET
Parameter
Timing Requirement:
t
t
t
t
Switching Characteristic:
t
t
t
NOTE
1
Applies after powerup sequence is complete. Internal phase lock loop requires no more than 2000 CLKIN cycles assuming stable CLKIN (not including crystal
CK
CKL
CKH
RSP
CPL
CPH
CKOH
oscillator startup time).
CLKIN Period
CLKIN Width Low
CLKIN Width High
RESET Width Low
CLKOUT Width Low
CLKOUT Width High
CLKIN High to CLKOUT High
CLKOUT
CLKIN
Figure 25. Clock Signals
t
Min
72.3
20
20
361.5
26.2
26.2
0
CKL
13.824 MHz
t
CPL
t
CK
–28–
Max
150
20
t
CKH
t
CKOH
t
CPH
Min
20
20
5t
0.5t
0.5t
Dependency
Frequency
CK
CK
CK
1
– 10
– 10
Max
Unit
ns
ns
ns
ns
ns
ns
ns
REV. 0