
Pin Description Table
Symbol
Description
Type
Comments
SA
Synchronous Address Inputs
Input
—
NC
No Connect
—
—
R
Synchronous Read
Input
Active Low
W
Synchronous Write
Input
Active Low
BW0–BW3
Synchronous Byte Writes
Input
Active Low
x9/x18/x36 only
NW0–NW1
Nybble Write Control Pin
Input
Active Low
x8 only
K
Input Clock
Input
Active High
K
Input Clock
Input
Active Low
C
Output Clock
Input
C
Output Clock
Input
Active Low
TMS
Test Mode Select
Input
—
TDI
Test Data Input
Input
—
TCK
Test Clock Input
Input
—
TDO
Test Data Output
Output
—
V
REF
HSTL Input Reference Voltage
Input
—
ZQ
Output Impedance Matching Input
Input
—
Qn
Synchronous Data Outputs
Output
Dn
Synchronous Data Inputs
Input
D
off
CQ
Disable DLL when low
Input
Active Low
Output Echo Clock
Output
—
CQ
Output Echo Clock
Output
—
V
DD
Power Supply
Supply
1.8 V Nominal
V
DDQ
Isolated Output Buffer Supply
Supply
1.5 or 1.8 V Nominal
V
SS
Power Supply: Ground
Supply
—
Preliminary
GS8662D08/09/18/36E-333/300/250/200/167
Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com.
Rev: 1.01a 2/2006
6/29
2005, GSI Technology
Note:
NC = Not Connected to die or any other pin