ADSP-216X Datasheet, PDF (30/39 Pages) Analog Devices – DSP Microcomputers with ROM

ADSP-216x
TIMING PARAMETERS (ADSP-2162/ADSP-2164/ADSP-2166)
INTERRUPTS AND FLAGS
Parameter
10.24 MHz
Min Max
13.0 MHz
Min Max
16.67 MHz
Min
Max
Frequency
Dependency
Min
Max
Unit
Timing Requirements:
t_IFS IRQx¹ or FI Setup Before
CLKOUT Low^{2, 3}
44.4
t_IFH IRQx¹ or FI Hold After
CLKOUT High^{2, 3}
24.4
Switching Characteristics:
t_FOH FO Hold After CLKOUT High 0
t_FOD FO Delay from CLKOUT High
15
39.2
19.2
0
15
35.0
0.25t_CK + 20
ns
15.0
0.25t_CK
ns
0
0
15
ns
15 ns
NOTES
1_{IRQx = IRQ0, IRQ1, and IRQ2.}
2_{If IRQx and FI inputs meet tIFS 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
FLAG
OUTPUT(S)
IRQx
FI
t_FOD
t_FOH
t_IFH
t_IFS
Figure 28. Interrupts and Flags
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