EM68B16DVAA
EtronTech
Figure 16. Non-Consecutive Read Bursts
CK
CK
READ
NOP
NOP
READ
NOP
NOP
Command
Address
BA, Col n
BA, Col b
CL = 2
CL = 3
DQS
DQ
DO n
DO b
DQS
DQ
DO n
Don’t Care
(1) DO n (or b) = Data Out from column n (or column b)
(2) BA Col n (b) = Bank A, Column n (b)
(3) Burst Length = 4; 3 subsequent elements of Data Out appear in the programmed order following DO n (b)
(4) Shown with nominal tAC, tDQSCK and tDQSQ
Figure 17. Random Read Bursts
CK
CK
READ
READ
READ
READ
NOP
NOP
Command
Address
BA, Col n
BA, Col x
BA, Col b
BA, Col g
CL = 2
DQS
DQ
DO n
DO n’
DO x
DO x’
DO b
DO b’
DO g
DO g’
CL = 3
DQS
DQ
DO n
DO n’
DO x
DO x’
DO b
DO b’
Don’t Care
(1) DO n, etc. = Data Out from column n, etc.
n’, x’, etc. = Data Out elements, according to the programmed burst order
(2) BA, Col n = Bank A, Column n
(3) Burst Length = 2, 4, 8 or 16 in cases shown (if burst of 4, 8 or 16, the burst is interrupted)
(4) Reads are to active rows in any banks
Etron Confidential
25
Rev. 1.0
Mar. 2009
ETRON [ ETRON TECHNOLOGY, INC. ]
