Read-Modify-Write Mode (Successive Address Accessing)

Command Mode (Command Code:100)

Mode (Data and Command Mode)

Note:

It is recommended that the host controller should read in the data from the DATA line between the rising edge

of the RD line and the falling edge of the next RD line.

HT1621

Rev. 1.70

11

June 29, 2005

D A T A

C S

W R

1

0

1 A 5 A 4 A 3 A 2 A 1 A 0 D 0 D 1 D 2 D 3

M e m o r y A d d r e s s ( M A ) D a t a ( M A )

D 0 D 1 D 2 D 3 D 0 D 1 D 2 D 3 D 0 D 1 D 2 D 3 D 0

D a t a ( M A )

D a t a ( M A + 1 ) D a t a ( M A + 1 )

R D

D 1 D 2 D 3 D 0

D a t a ( M A + 2 )

D A T A

C S

W R

1

0

0 C 8 C 7 C 6 C 5 C 4 C 3 C 2 C 1 C 0

C o m m a n d 1

C 8 C 7 C 6 C 5 C 4 C 3 C 2 C 1 C 0

C o m m a n d i

C o m m a n d . . .

C o m m a n d

o r

D a t a M o d e

R D

D A T A

C S

W R

A d d r e s s & D a t a

C o m m a n d

o r

D a t a M o d e

A d d r e s s a n d D a t a

C o m m a n d

o r

D a t a M o d e

A d d r e s s a n d D a t a

C o m m a n d

o r

D a t a M o d e