GS8644ZV18B-150I GSI [GSI Technology], GS8644ZV18B-150I Datasheet - Page 24

• Manufacturer Part Number: GS8644ZV18B-150I
• Description: 72Mb Pipelined and Flow Through Synchronous NBT SRAM
• Manufacturer: GSI [GSI Technology]

JTAG Port Operation
Overview
The JTAG Port on this RAM operates in a manner that is compliant with IEEE Standard 1149.1-1990, a serial boundary scan
interface standard (commonly referred to as JTAG). The JTAG Port input interface levels scale with V
drivers are powered by V
Rev: 1.03 11/2004
Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com.
A0–An
CKE
ADV
DQ
CK
Bn
W
G
E
tS
tS
tS
tS
tS
tS
A
*Note: E = High(False) if E1 = 1 or E2 = 0 or E3 = 1
Write A
DDQ
tH
tH
tH
tH
tH
tH
.
D(A)
tS
B
Write B
tH
D(B)
Flow Through Mode Timing (NBT)
Write B+1
tKH
tKH
tKL
tKL
D(B+1)
C
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tLZ
Read C
tKQ
GS8644ZV18(B/E)/GS8644ZV36(B/E)/GS8644ZV72(C)
tKC
tKC
Q(C)
Cont
tOHZ
D
Read D
tOE
tOLZ
E
Q(D)
Write E
tHZ
tKQX
DD
F
D(E)
. The JTAG output
tLZ
Read F
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tKQ
© 2003, GSI Technology
Q(F)
G
Write G
tKQX
D(G)