參數(shù)資料
型號(hào): ADSP-2189MKST-300
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: 24-BIT, 37.5 MHz, OTHER DSP, PQFP100
封裝: PLASTIC, LQFP-100
文件頁數(shù): 20/32頁
文件大小: 244K
代理商: ADSP-2189MKST-300
REV. A
ADSP-2189M
20
Parameter
Min
Max
Unit
Interrupts and Flags
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
+ 10
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
0.5t
CK
5
ns
ns
0.5t
CK
+ 4
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
ADSP-2100 Family User
s Manual
, Third Edition, 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
,
IRQLE
.
4
PFx = PF0, PF1, PF2, PF3, PF4, PF5, PF6, PF7.
5
Flag Outputs = PFx, FL0, FL1, FL2, Flag_out4.
t
FOD
t
FOH
t
IFH
t
IFS
CLKOUT
FLAG
OUTPUTS
IRQx
FI
PFx
Figure 23. Interrupts and Flags
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