ADSP-2171 Analog Devices, ADSP-2171 Datasheet - Page 34

• Manufacturer Part Number: ADSP-2171
• Description: ADSP-2100 Family DSP Microcomputers
• Manufacturer: Analog Devices

ADSP-2171/ADSP-2172/ADSP-2173
ADSP-2173
Parameter
Interrupts and Flags
Timing Requirement:
t
t
Switching Characteristic:
t
t
NOTES
1
2
3
4
IFS
IFH
FOH
FOD
If IRQx and FI inputs meet t
the following cycle. (Refer to “Interrupt Controller Operation” in the Program Control chapter of the User’s Manual for further information on interrupt servicing.)
Edge-sensitive interrupts require pulse widths greater than 10 ns; level-sensitive interrupts must be held low until serviced.
IRQx = IRQ0, IRQ1, and IRQ2.
Flag Output = FL0, FL1, FL2, and FO.
IRQx or FI Setup before CLKOUT Low
IRQx or FI Hold after CLKOUT High
Flag Output Hold after CLKOUT Low
Flag Output Delay from CLKOUT Low
IFS
and t
IFH
setup/hold requirements, they will be recognized during the current clock cycle; otherwise the signals will be recognized on
OUTPUTS
CLKOUT
FLAG
IRQx
FI
Figure 25. Interrupts and Flags
1, 2, 3
4
4
1, 2, 3
t
t
FOH
FOD
–34–
t
IFH
Min
0.25t
0.25t
0.5t
CK
CK
CK
t
IFS
– 10
+ 23
Max
0.5t
CK
+ 5
REV. A
Unit
ns
ns
ns
ns