EP9315 datasheet(23/64 Pages) CIRRUS

Part #	EP9315

Description	Enhanced Universal Platform System-on-Chip Processor

Download	64 Pages

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Manufacturer	CIRRUS [Cirrus Logic]

Direct Link	http://www.cirrus.com

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23 / 64 page

DS638PP4

23

EP9315

Enhanced Universal Platform SOC Processor

Static Memory 32-bit Read on 16-bit External Bus

Parameter

Symbol

Min

Typ

Max

Unit

AD setup to CSn assert time

tADs

tHCLK

-

-ns

CSn assert to AD transition time

tADd1

-

tHCLK × (WST1 + 1)

-ns

AD transition to CSn deassert time

tADd2

-

tHCLK × (WST1 + 2)

-ns

AD hold from CSn deassert time

tADh

tHCLK

--

ns

RDn assert time

tRDpwL

-

tHCLK × ((2 × WST1) + 3)

-ns

CSn to RDn delay time

tRDd

--

3

ns

CSn assert to DQMn assert delay time

tDQMd

--

1

ns

DA setup to AD transition time

tDAs1

15

-

ns

DA to RDn deassert time

tDAs2

tHCLK + 12

--

ns

DA hold from AD transition time

tDAh1

0-

-

ns

DA hold from RDn deassert time

tDAh2

0-

-

ns

Figure 10. Static Memory Multiple Word Read 16-bit Cycle Timing Measurement

CSn

WRn

RDn

DA

AD

DQMn

t

RDpwl

t

ADd1

t

RDh

t

DQMh

t

DAh2

t

DAs1

t

DAh1

t

DAs2

WAIT

t

ADs

t

RDd

t

DQMd

t

ADh

t

ADd2

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