參數(shù)資料
型號(hào)： ADSP-2185
廠商： Analog Devices, Inc.
元件分類： 數(shù)字信號(hào)處理
英文描述： DSP Microcomputer
中文描述： DSP微機(jī)
文件頁(yè)數(shù)： 19/31頁(yè)
文件大?。?/td> 223K
代理商： ADSP-2185
ADSP-2185L
–19–
REV. A
Parameter
Min
Max
Unit
Interrupts and Flag
Timing Requirements
:
t
IFS
t
IFH
IRQx
, FI, or PFx Setup before CLKOUT Low
1, 2, 3, 4
IRQx
, FI, or PFx Hold after CLKOUT High
1, 2, 3, 4
0.25t
CK
+ 15
0.25t
CK
ns
ns
Switching Characteristics:
t
FOH
t
FOD
Flag Output Hold after CLKOUT Low
5
Flag Output Delay from CLKOUT Low
5
0.25t
CK
– 7
ns
ns
0.5t
CK
+ 6
NOTES
1
If
IRQx
and FI inputs meet t
and t
setup/hold requirements, they will be recognized during the current clock cycle; otherwise the signals will be recognized on
the following cycle. (Refer to Interrupt Controller Operation in the Program Control chapter of the User’s Manual for further information on interrupt servicing.)
2
Edge-sensitive interrupts require pulsewidths greater than 10 ns; level-sensitive interrupts must be held low until serviced.
3
IRQx
=
IRQ0
,
IRQ1
,
IRQ2
,
IRQL0
,
IRQL1
,
IRQE
.
4
PFx = PF0, PF1, PF2, PF3, PF4, PF5, PF6, PF7.
5
Flag outputs = PFx, FL0, FL1, FL2, Flag_out.
t
FOD
t
FOH
t
IFH
t
IFS
CLKOUT
FLAG
OUTPUTS
IRQx
FI
PFx
Figure 20. Interrupts and Flags
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