ESMT

M13S128168A

Elite Semiconductor Memory Technology Inc.

Publication Date : Dec. 2008

Revision : 2.2

11/49

Burst Address Ordering for Burst Length

Burst

Length

Starting

Address (A2, A1,A0)

Sequential Mode

Interleave Mode

xx0

0, 1

0, 1

2

xx1

1, 0

1, 0

x00

0, 1, 2, 3

0, 1, 2, 3

x01

1, 2, 3, 0

1, 0, 3, 2

x10

2, 3, 0, 1

2, 3, 0, 1

4

x11

3, 0, 1, 2

3, 2, 1, 0

000

0, 1, 2, 3, 4, 5, 6, 7

0, 1, 2, 3, 4, 5, 6, 7

001

1, 2, 3, 4, 5, 6, 7, 0

1, 0, 3, 2, 5, 4, 7, 6

010

2, 3, 4, 5, 6, 7, 0, 1

2, 3, 0, 1, 6, 7, 4, 5

011

3, 4, 5, 6, 7, 0, 1, 2

3, 2, 1, 0, 7, 6, 5, 4

100

4, 5, 6, 7, 0, 1, 2, 3

4, 5, 6, 7, 0, 1, 2, 3

101

5, 6, 7, 0, 1, 2, 3, 4

5, 4, 7, 6, 1, 0, 3, 2

110

6, 7, 0, 1, 2, 3, 4, 5

6, 7, 4, 5, 2, 3, 0, 1

8

111

7, 0, 1, 2, 3, 4, 5, 6

7, 6, 5, 4, 3, 2, 1, 0

DLL Enable / Disable

The DLL must be enabled for normal operation. DLL enable is required during power-up initialization, and upon returning to

normal operation after having disabled the DLL for the purpose of debug or evaluation (upon exiting Self Refresh Mode, the DLL is

enable automatically). Any time the DLL is enabled, 200 clock cycles must occur before a READ command can be issued.

Output Drive Strength

The normal drive strength for all outputs is specified to be SSTL_2, Class II. M13S128168A also support a weak drive strength

option, intended for lighter load and/or point-to-point environments.

Mode Register Set

*1 : MRS can be issued only at all banks precharge state.

0

1

23

4

5

678

CO MM A N D

Pre c h a rg e

Al l B a n k s

Mo d e

R egi s t e r S e t

An y

C o mma n d

*2

*1

CL K

CL K