Bus controller (bc) – Panasonic MN103001G/F01K User Manual

Page 172

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Bus Controller (BC)

8-58

(a)

Read Timing

Fig. 8-13-28

Access Timing on a 8-bit Bus with Handshaking in Synchronous Mode and in Address/

Data Multiplex Mode (MCLK = SYSCLK multiplied by 2)

For details on the various timing settings, refer to the description of the memory control register in section 8.6,

“Description of Registers.”

(b)

Write Timing

MCLK

SYSCLK

AS

CS2

ASA

ADE

RWSEL

A23* to 16

ADM15 to 0

RE

WE0

ASN

ASA

ADE

ASN

EA

WEN

Write high-order side

Write low-order side

DK

DW

BCE

Consumed internally
by the BC

BCE

EA

WEN

DW

DK detection start

“H”

“0” (“L”)

A[0]=0

A[0]=0

A[0]=1

data out

data out

A[0]=1

: Undefined

*

“0” (“L”)

Consumed internally
by the BC

DK detection start

: A23 also serves as CS3

: Undefined or Hi-Z

MCLK

SYSCLK

AS

CS2

ASA

ADE

RWSEL

A23* to 16

ADM15 to 0

RE

WE0

ASN

ASA

ADE

ASN

EA

REN

Read high-order side

Read low-order side

DK

DW

DK detection start

BCE

Consumed internally
by the BC

BCE

EA

REN

DW

DK detection start

A[0]=0

A[0]=1

data in

data in

“H”

“0”( )

“L”

A[0]=0

A[0]=1

: Undefined

: A23 also serves as CS3

*

: Undefined or Hi-Z

“0”( )

“L”

Consumed internally
by the BC

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