SH7018 datasheet(99/431 Pages) RENESAS

99 / 431 page

Bit 13 (IW21)

Bit 12 (IW20)

Description

No idle cycle after accessing CS2 space

Inserts one idle cycle after accessing CS2

space

Inserts two idle cycles after accessing CS2

space

Inserts three idle cycles after accessing CS2

space

(Initial value)

Bit 11 (IW11)

Bit 10 (IW10)

Description

No idle cycle after accessing CS1 space

Inserts one idle cycle after accessing CS1

space

Inserts two idle cycles after accessing CS1

space

Inserts three idle cycles after accessing CS1

space

(Initial value)

Bit 9 (IW01)

Bit 8 (IW00)

Description

No idle cycle after accessing CS0 space

Inserts one idle cycle after accessing CS0

space

Inserts two idle cycles after accessing CS0

space

Inserts three idle cycles after accessing CS0

space

(Initial value)

• Bits 7 to 4—Idle Specification for Continuous Access (CW3, CW2, CW1, CW0): The

continuous access idle specification makes insertions to clearly delineate the bus intervals by

once negating the

CSn signal when doing consecutive accesses of the same CS space. When a

write immediately follows a read, the number of idle cycles inserted is the larger of the two

values specified by IW and CW. Refer to section 7.4, Waits between Access Cycles, for

details.

CW3 specifies the continuous access idles for the CS3 space; CW2 specifies the continuous

access idles for the CS2 space; CW1 specifies the continuous access idles for the CS1 space

and CW0 specifies the continuous access idles for the CS0 space.

SH7018 Datasheet(PDF) 99 Page - Renesas Technology Corp

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