ADSP-2104KP-80 View Datasheet(PDF) - Analog Devices

Part Name

Description

Manufacturer

ADSP-2104KP-80

Low Cost DSP Microcomputers

Analog Devices 

ADSP-2104/ADSP-2109

TIMING PARAMETERS (ADSP-2104L/ADSP-2109L)

INTERRUPTS & FLAGS

Parameter

13.824 MHz

Min

Max

Frequency

Dependency

Min

Max

Unit

Timing Requirement:

tIFS

IRQx1 or FI Setup before CLKOUT Low2, 3

33.1

tIFH

IRQx1 or FI Hold after CLKOUT High2, 3

18.1

0.25tCK + 15

ns

0.25tCK

ns

Switching Characteristic:

tFOH FO Hold after CLKOUT High

0

ns

tFOD FO Delay from CLKOUT High

15

ns

NOTES

1IRQx=IRQ0, IRQ1, and IRQ2.

2If 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.)

3Edge-sensitive interrupts require pulse widths greater than 10 ns. Level-sensitive interrupts must be held low until serviced.

CLKOUT

FLAG

OUTPUT(S)

IRQx

FI

tFOD

tFOH

tIFH

tIFS

Figure 26. Interrupts & Flags

REV. 0

–29–

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