參數(shù)資料
型號: ADSP-2189NKSTZ-320
廠商: ANALOG DEVICES INC
元件分類: 數(shù)字信號處理
英文描述: 16-Bit, 80MIPS, 1.8V, 2 Serial Ports, Host Port, 192KB RAM; Package: 100 ld LQFP; No of Pins: 100; Temperature Range: Comm.
中文描述: 24-BIT, 40 MHz, OTHER DSP, PQFP100
封裝: LEAD FREE, MS-026BED, LQFP-100
文件頁數(shù): 22/48頁
文件大?。?/td> 2334K
代理商: ADSP-2189NKSTZ-320
ADSP-218xN
Rev. A
|
Page 29 of 48
|
August 2006
Interrupts and Flags
Table 16. Interrupts and Flags
Parameter
Min
Max
Unit
Timing Requirements:
tIFS
IRQx, FI, or PFx Setup before CLKOUT Low1, 2, 3, 4
0.25tCK + 10
ns
tIFH
IRQx, FI, or PFx Hold after CLKOUT High1, 2, 3, 4
0.25tCK
ns
Switching Characteristics:
tFOH
Flag Output Hold after CLKOUT Low
5
0.5tCK – 5
ns
tFOD
Flag Output Delay from CLKOUT Low
0.5tCK + 4
ns
1 If IRQx and FI inputs meet tIFS and tIFH 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-218x DSP Hardware Reference for further information on
interrupt servicing.)
2 Edge-sensitive interrupts require pulse widths 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, FO.
Figure 27. Interrupts and Flags
tFOD
tFOH
tIFH
tIFS
CLKOUT
FLAG
OUTPUTS
IRQx
FI
PFx
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