參數(shù)資料
型號: ADSP2104
廠商: Analog Devices, Inc.
英文描述: Low Cost DSP Microcomputers
中文描述: 低成本DSP單片機(jī)
文件頁數(shù): 22/36頁
文件大?。?/td> 333K
代理商: ADSP2104
ADSP-2104/ADSP-2109
–22–
REV. 0
Frequency
Dependency
20 MHz
Parameter
Min
Max
Min
Max
Unit
Timing Requirement:
t
IFS
IRQx
1
or FI Setup before
CLK OUT Low
2, 3
t
IFH
IRQx
1
or FI Hold after CLK OUT
High
2, 3
Switching Characteristic:
t
FOH
FO Hold after CLKOUT High
t
FOD
FO Delay from CLKOUT High
27.5
0.25t
CK
+ 15
ns
12.5
0.25t
CK
ns
0
0
ns
ns
15
NOTES
1
IRQx=IRQ0, IRQ1, and IRQ2.
2
If IRQx and FI inputs meet t
IFS
and t
IFH
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.
TIMNGPARAMETERS (ADSP-2104/ADSP-2109)
INT E RRUPT S & FLAGS
CLKOUT
FLAG
OUTPUT(S)
t
FOD
IRQ
x
FI
t
FOH
t
IFH
t
IFS
Figure 20. Interrupts & Flags
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