Renesas SH7781 User Manual

Page 474

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11. Local Bus State Controller (LBSC)

Rev.1.00 Jan. 10, 2008 Page 444 of 1658
REJ09B0261-0100

TAS1

CLKOUT

A25-A0

CSn

R/

W

WEn

(In reading)

(In writing)

D63-D0

T1

TS1

Tw

Tw

Tw

T2

Tw

TH1

TH2

TAH1

*

1

*

2

TS1:

CSn assertion - RD assertion delay cycle

CSnWCR RDS = 001

TAS1: Address setup wait

CSnWCR ADS=001

TAH1: Address hold wait

CSnWCR AHS = 001

Tw: Access wait

CSnWCR IW = 0100

TH1, TH2:

RD negation - CSn negation delay cycle

CSnWCR RDH = 010

WEn

D63 to D0
(ADS=000)

BS

TS1:

CSn assertion - WEn assertion delay cycle

CSnWCR WTS = 001

TAS1: Address setup wait

CSnWCR BSH=001

TAH1: Address hold wait

CSnWCR ADH = 001

Tw: Access wait

CSnWCR IW = 0100

TH1, TH2:

WE negation - CSn negation delay cycle

CSnWCR WTH = 010

CLKOUT

CLKOUT

D63 to D0
(ADS=001 to 111)

Notes: 1. When CSnBCR RDSPL is set to 1

2. When CSnWCR BSH is set to 1

Figure 11.39 Wait State Timing of Byte Control SRAM

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