ADSP-2115BPZ-100 Datasheet, PDF (46/64 Pages) Analog Devices – ADSP-2100 Family DSP Microcomputers

ADSP-21xx
TIMING PARAMETERS (ADSP-2103/2162/2164)
INTERRUPTS & FLAGS
Parameter
10.24 MHz
Min Max
Frequency
Dependency
Min
Max
Unit
Timing Requirement:
t_IFS
IRQx¹ or FI Setup before CLKOUT Low^{2, 3}
t_IFH IRQx¹ or FI Hold after CLKOUT High^{2, 3}
Switching Characteristic:
t_FOH FO Hold after CLKOUT High
t_FOD FO Delay from CLKOUT High
44.4
24.4
0
15
0.25t_CK + 20
ns
0.25t_CK
ns
ns
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 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)
IRQ x
FI
t_FOD
t_FOH
t_IFH
t_IFS
Figure 40. Interrupts & Flags
–46–
REV. B