APCPCWM_4828539:WP_0000005WP_0000005
A
P
C
P
C
W
M
_4828539:
W
P
_0000005W
P
_000000
5
Rev. 1.2 / Jul. 2010
41
Table 4 - IDD1 Measurement-Loop Pattern
a)
a) DM must be driven LOW all the time. DQS, DQS are used according to RD Commands, otherwise MID-
LEVEL.
b) Burst Sequence driven on each DQ signal by Read Command. Outside burst operation, DQ signals are
MID_LEVEL.
CK, CK
CKE
Sub
-Loop
Cy
cle
Number
Command
CS
RAS
CAS
WE
OD
T
BA[
2
:0]
A[1
5
:1
1]
A[1
0
]
A
[9:7]
A
[6:3]
A[2
:0]
Data
b)
toggling
Sta
tic High
0
0
ACT
0
0
1
1
0
0
00
0
0
0
0
-
1,2
D, D
1
0
0
0
0
0
00
0
0
0
0
-
3,4
D, D
1
1
1
1
0
0
00
0
0
0
0
-
...
repeat pattern 1...4 until nRCD - 1, truncate if necessary
nRCD
RD
0
1
0
1
0
0
00
0
0
0
0
00000000
...
repeat pattern 1...4 until nRAS - 1, truncate if necessary
nRAS
PRE
0
0
1
0
0
0
00
0
0
0
0
-
...
repeat pattern 1...4 until nRC - 1, truncate if necessary
1*nRC+0
ACT
0
0
1
1
0
0
00
0
0
F
0
-
1*nRC+1,2
D, D
1
0
0
0
0
0
00
0
0
F
0
-
1*nRC+3,4
D, D
1
1
1
1
0
0
00
0
0
F
0
-
...
repeat pattern nRC + 1,...4 until nRC + nRCE - 1, truncate if necessary
1*nRC+nRCD
RD
0
1
0
1
0
0
00
0
0
F
0
00110011
...
repeat pattern nRC + 1,...4 until nRC + nRAS - 1, truncate if necessary
1*nRC+nRAS
PRE
0
0
1
0
0
0
00
0
0
F
0
-
...
repeat pattern nRC + 1,...4 until *2 nRC - 1, truncate if necessary
1
2*nRC
repeat Sub-Loop 0, use BA[2:0] = 1 instead
2
4*nRC
repeat Sub-Loop 0, use BA[2:0] = 2 instead
3
6*nRC
repeat Sub-Loop 0, use BA[2:0] = 3 instead
4
8*nRC
repeat Sub-Loop 0, use BA[2:0] = 4 instead
5
10*nRC
repeat Sub-Loop 0, use BA[2:0] = 5 instead
6
12*nRC
repeat Sub-Loop 0, use BA[2:0] = 6 instead
7
14*nRC
repeat Sub-Loop 0, use BA[2:0] = 7 instead
B48614/178.104.2.80/2010-07-08 11:46