Analog-devices ADSP-2186 Manual do Utilizador descarregar pdf (Página 20)

ADSP-2186

REV. 0

–20–

TIMING PARAMETERS

Parameter Min Max Unit

Memory Read

Timing Requirements:

RDD

RD Low to Data Valid 0.5 t

– 9 + w ns

A0–A13, xMS to Data Valid 0.75 t

– 10.5 + w ns

RDH

Data Hold from RD High 0 ns

Switching Characteristics:

RD Pulse Width 0.5 t

– 5 + w ns

CRD

CLKOUT High to RD Low 0.25 t

– 5 0.25 t

+ 7 ns

ASR

A0–A13, xMS Setup before RD Low 0.25 t

– 6 ns

RDA

A0–A13, xMS Hold after RD Deasserted 0.25 t

– 3 ns

RWR

RD High to RD or WR Low 0.5 t

– 5 ns

w = wait states × t

xMS = PMS, DMS, CMS, IOMS, BMS.

CLKOUT

A0 – A13

RDA

RWR

ASR

CRD

RDD

RDH

DMS, PMS,

BMS, IOMS,

CMS

Figure 17. Memory Read

1 2 ... 15 16 17 18 19 20 21 22 23 24 25 ... 31 32

ADSP-2186 1
DSP Microcomputer 1
ADSP-2186 SPECIFICATIONS 13
ADSP-2186 TIMING PARAMETERS 14
TIMING PARAMETERS 17
C2999–6–3/97 32
PRINTED IN U.S.A 32

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