Burst of 2 Nybble Write Clock Truth Table

NW

NW

Current Operation

D

D

K

↑

K

↑

K

↑

K

↑

K

↑

T

T

Write

Dx stored if NWn = 0 in both data transfers

D1

D2

T

F

Write

Dx stored if NWn = 0 in 1st data transfer only

D1

X

F

T

Write

Dx stored if NWn = 0 in 2nd data transfer only

X

D2

F

F

Write Abort

No Dx stored in either data transfer

X

X

Notes:

1. “1” = input “high”; “0” = input “low”; “X” = input “don’t care”; “T” = input “true”; “F” = input “false”.

2. If one or more NWn = 0, then NW = “T”, else NW = “F”.

x36 Byte Write Enable (BWn) Truth Table

BW0

BW1

BW2

BW3

D0–D8

D9–D17

D18–D26

D27–D35

1

1

1

1

Don’t Care

Don’t Care

Don’t Care

Don’t Care

0

1

1

1

Data In

Don’t Care

Don’t Care

Don’t Care

1

0

1

1

Don’t Care

Data In

Don’t Care

Don’t Care

0

0

1

1

Data In

Data In

Don’t Care

Don’t Care

1

1

0

1

Don’t Care

Don’t Care

Data In

Don’t Care

0

1

0

1

Data In

Don’t Care

Data In

Don’t Care

1

0

0

1

Don’t Care

Data In

Data In

Don’t Care

0

0

0

1

Data In

Data In

Data In

Don’t Care

1

1

1

0

Don’t Care

Don’t Care

Don’t Care

Data In

0

1

1

0

Data In

Don’t Care

Don’t Care

Data In

1

0

1

0

Don’t Care

Data In

Don’t Care

Data In

0

0

1

0

Data In

Data In

Don’t Care

Data In

1

1

0

0

Don’t Care

Don’t Care

Data In

Data In

0

1

0

0

Data In

Don’t Care

Data In

Data In

1

0

0

0

Don’t Care

Data In

Data In

Data In

0

0

0

0

Data In

Data In

Data In

Data In

GS8342T08/09/18/36BD-400/350/333/300/250

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

Rev: 1.02 6/2012

11/35

© 2011, GSI Technology