參數(shù)資料
型號: W948D6FBHX6G
廠商: WINBOND ELECTRONICS CORP
元件分類: DRAM
英文描述: 8M X 16 DDR DRAM, 5 ns, PBGA60
封裝: 8 X 9 MM, 0.80 MM PITCH, HALOGEN FREE AND LEAD FREE, VFBGA-60
文件頁數(shù): 25/60頁
文件大小: 1147K
代理商: W948D6FBHX6G
W948D6FB / W948D2FB
256Mb Mobile LPDDR
Publication Release Date : May, 24, 2011
- 31 -
Revision A01-003
7.5.7 Random Read Bursts
Full-speed random read accesses within a page or pages can be performed as shown in following figure.
CL=2
DO n
= Don't Care
BA,Col n
READ
NOP
CK
Command
Address
DQS
DQ
DQS
DQ
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
BA,Col b
CL=3
BA,Col x
READ
BA,Col g
DO n'
DO x'
DO x
DO b
DO g
DO b'
DO g'
DO b'
DO b
DO x'
DO x
DO n'
7.5.8 Read Burst Terminate
Data from any READ burst may be truncated with a BURST TERMINATE command, as shown in figure. The BURST
TERMINATE latency is equal to the read (CAS) latency, i.e., the BURST TERMINATE command should be issued X
cycles after the READ command where X equals the desired data-out element pairs.
CL=2
= Don't Care
BA,Col n
READ
NOP
CK
Command
Address
DQS
DQ
DQS
DQ
1) DO n = Data Out from column n
2) BA,Col n = Bank A, Column n
3) Cases shown are bursts of 4,8 or 16 terminated after 2 data elements.
4) Shown with nominal tAC, tDQSCK and tDQSQ
CL=3
BST
NOP
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