GS816218(B/D)/GS816236(B/D)/GS816272(C)

Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com.

Rev: 2.17 11/2004

11/41

© 1999, GSI Technology

Note:

There are pull-up devices on the ZQ, SCD, and FT pins and a pull-down device on the ZZ pin, so those input pins can be unconnected and the

chip will operate in the default states as specified in the above tables.

Burst Counter Sequences

BPR 1999.05.18

Mode Pin Functions

Mode Name

Pin Name

State

Function

Burst Order Control

LBO

L

Linear Burst

H

Interleaved Burst

Output Register Control

FT

L

Flow Through

H or NC

Pipeline

Power Down Control

ZZ

L or NC

Active

H

Single/Dual Cycle Deselect Control

SCD

L

Dual Cycle Deselect

H or NC

Single Cycle Deselect

FLXDrive Output Impedance Control

ZQ

L

High Drive (Low Impedance)

H or NC

Low Drive (High Impedance)

9th Bit Enable

PE

L

Activate DQPx I/Os (x18/x36 mode)

H or NC

Deactivate DQPx I/Os (x16/x32 mode)

Note:

The burst counter wraps to initial state on the 5th clock.

Note:

The burst counter wraps to initial state on the 5th clock.

Linear Burst Sequence

A[1:0] A[1:0] A[1:0] A[1:0]

1st address

00

01

10

11

2nd address

01

10

11

00

3rd address

10

11

00

01

4th address

11

00

01

10

Interleaved Burst Sequence

A[1:0] A[1:0] A[1:0] A[1:0]

1st address

00

01

10

11

2nd address

01

00

11

10

3rd address

10

11

00

01

4th address

11

10

01

00