hyb18m1g16 Qimonda, hyb18m1g16 Datasheet - Page 25

• Manufacturer Part Number: hyb18m1g16
• Description: Drams For Mobile Applications 1-gbit X16 Ddr Mobile-ram Rohs Compliant
• Manufacturer: Qimonda

Data from any READ burst may be concatenated with or truncated with data from a subsequent READ command. In either
case, a continuous flow of data can be maintained. The first data element from the new burst follows either the last element of
a completed burst or the last desired data element of a longer burst which is being truncated.
The new READ command should be issued x cycles after the first READ command, where x equals the number of desired data
element pairs (pairs are required by the 2n pre fetch architecture). This is shown in
Rev.1.0, 2007-03
10242006-Y557-TZXW
Command
Address
DO n (or b) = Data Out from column n (or column b)
Burst Length = 4, 8 or 16 (if 4, the bursts are concatenated; if 8 or 16, the second burst interrupts the first)
3 subsequent elements of Data Out appear in the programmed order following DO n
3 (or 7 or 15) subsequent elements of Data Out appear in the programmed order following DO b
Read commands shown must be to the same device
DQS
DQS
DQ
DQ
CK
CK
BA,Col n
READ
CL=2
NOP
CL=3
DO n
BA,Col b
READ
25
DO n
NOP
Figure
DO b
NOP
15.
Consecutive READ Bursts
HY[B/E]18M1G16[0/1]BF
1-Gbit DDR Mobile-RAM
DO b
FIGURE 15
= Don't Care
NOP
Data Sheet