Pin Description Table

Symbol

Description

Type

Comments

SA

Synchronous Address Inputs

Input

—

R

Synchronous Read

Input

Active Low

W

Synchronous Write

Input

Active Low

BW0–BW3

Synchronous Byte Writes

Input

Active Low

NW0–NW1

Synchronous Nybble Writes

Input

Active Low

(x8 only)

K

Input Clock

Input

Active High

K

Input Clock

Input

Active Low

TMS

Test Mode Select

Input

—

TDI

Test Data Input

Input

—

TCK

Test Clock Input

Input

—

TDO

Test Data Output

Output

—

HSTL Input Reference Voltage

Input

—

ZQ

Output Impedance Matching Input

Input

—

Qn

Synchronous Data Outputs

Output

—

Dn

Synchronous Data Inputs

Input

—

Doff

Disable DLL when low

Input

Active Low

CQ

Output Echo Clock

Output

—

CQ

Output Echo Clock

Output

—

Power Supply

Supply

1.8 V Nominal

Isolated Output Buffer Supply

Supply

1.8 V or 1.5 V Nominal

Power Supply: Ground

Supply

—

QVLD

Q Valid Output

Output

—

ODT

On-Die Termination

Input

Active High

NC

No Connect

—

—

GS81302Q07/10/19/37E-318/300/250/200

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

Rev: 1.02e 5/2012

6/28

© 2010, GSI Technology

Notes:

1. NC = Not Connected to die or any other pin

unconnected.