Download ADSP-216x Data Sheet

ADSP-216x
TIMING PARAMETERS (ADSP-2162/ADSP-2164/ADSP-2166)
INTERRUPTS AND FLAGS
Parameter
Timing Requirements:
tIFS
IRQx1 or FI Setup Before
CLKOUT Low2, 3
IRQx1 or FI Hold After
tIFH
CLKOUT High2, 3
Switching Characteristics:
tFOH FO Hold After CLKOUT High
tFOD FO Delay from CLKOUT High
10.24 MHz
Min
Max
13.0 MHz
Min
Max
16.67 MHz
Min
Max
Frequency
Dependency
Min
Max
Unit
44.4
39.2
35.0
0.25tCK + 20
ns
24.4
19.2
15.0
0.25tCK
ns
0
0
15
0
15
0
15
15
ns
ns
NOTES
1
IRQx = IRQ0, IRQ1, and IRQ2.
2
If IRQx and FI inputs meet t IFS and tIFH setup/hold requirements, they will be recognized during the current clock cycle; otherwise they will be recognized during the
following cycle. (Refer to the “Interrupt Controller” section in Chapter 3, Program Control, of the ADSP-2100 Family User’s Manual, Third Edition, for further
information on interrupt servicing.)
3
Edge-sensitive interrupts require pulse widths greater than 10 ns. Level-sensitive interrupts must be held low until serviced.
CLKOUT
tFOD
tFOH
FLAG
OUTPUT(S)
tIFH
IRQx
FI
tIFS
Figure 28. Interrupts and Flags
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