EP9307-CR(2005) View Datasheet(PDF) - Cirrus Logic

Part Name

Description

Manufacturer

EP9307-CR
(Rev.:2005)

ARM9 SOC with Ethernet, USB, Display, and Touchscreen

Cirrus Logic 

EP9307

ARM9 SOC with Ethernet, USB, Display and Touchscreen

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

Parameter

AD setup to CSn assert time

CSn assert to AD transition time

AD transition to CSn deassert time

AD hold from CSn deassert time

RDn assert time

CSn to RDn delay time

CSn assert to DQMn assert delay time

DA setup to AD transition time

DA to RDn deassert time

DA hold from AD transition time

DA hold from RDn deassert time

Symbol

tADs

tADd1

tADd2

tADh

tRDpwL

tRDd

tDQMd

tDAs1

tDAs2

tDAh1

tDAh2

Min

tHCLK

-

-

tHCLK

-

-

-

15

tHCLK + 12

0

0

Typ

-

tHCLK × (WST1 + 1)

tHCLK × (WST1 + 2)

-

tHCLK × ((2 × WST1) + 3)

-

-

-

-

-

-

Max

-

-

-

-

-

3

1

-

-

-

-

Unit

ns

ns

ns

ns

ns

ns

ns

ns

ns

ns

ns

tADs

AD

CSn

WRn

RDn

DQMn

DA

WAIT

tADd1

tADd2

tRDd

tRDpwl

tDQMd

tDAs1

tDQMh

tDAh1 tDAs2

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

tADh

tRDh

tDAh2

DS667PP4

©Copyright 2005 Cirrus Logic (All Rights Reserved)

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