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Page 36 of 59
Rev. 1.0 March 2009
DDP 4Gb DDR3 SDRAM
K4B4G0446B
K4B4G0846B
[ Table 39 ] IDD7 Measurement - Loop Pattern1
Note :
1. DM must be driven LOW all the time. DQS, DQS are used according to RD Commands, otheerwise MID-LEVEL.
2. Burst Sequence driven on each DQ signal by Read Command. Outside burst operation. DQ signals are MID-LEVEL.
CK
/C
K
CKE
Su
b-
Loo
p
Cycle
Num
b
er
Com
m
an
d
CS
RAS
CAS
WE
OD
T
BA
[2
:0
]
A[
15:1
1]
A[10
]
A[9:
7]
A[6:
3]
A[2:
0]
Dat
a
2 )
toggling
S
tatic
High
0
ACT
001
10
0
00
0
0
0-
1
RDA
010
10
0
00
1
0
0
0
00000000
2
D
100
00
0
00
0
0
0-
...
repeat above D Command until nRRD - 1
1
nRRD
ACT
001
10
1
00
0
F
0-
nRRD + 1
RDA
0
1
0
1
0
1
00
1
0
F
0
00110011
nRRD + 2
D
1
0
1
00
0
F
0-
...
repeat above D Command until 2*nRRD-1
2
2 * nRRD
repeat Sub-Loop 0, but BA[2:0] = 2
3
3 * nRRD
repeat Sub-Loop 1, but BA[2:0] = 3
4
4 * nRRD
D
100
00
3
00
0
F
0-
Assert and repeat above D Command until nFAW - 1, if necessary
5
nFAW
repeat Sub-Loop 0, but BA[2:0] = 4
6
nFAW+nRRD
repeat Sub-Loop 1, but BA[2:0] = 5
7
nFAW+2*nRRD
repeat Sub-Loop 0, but BA[2:0] = 6
8
nFAW+3*nRRD
repeat Sub-Loop 1, but BA[2:0] = 7
9
nFAW+4*nRRD
D
100
00
7
00
0
F
0-
Assert and repeat above D Command until 2*nFAW - 1, if necessary
10
2*nFAW+0
ACT
001
10
0
00
0
F
0-
2*nFAW+1
RDA
010
10
0
00
1
0
F
0
00110011
2*nFAW+2
D
100
00
0
00
0
F
0-
Repeat above D Command until 2*nFAW + nRRD - 1
11
2*nFAW+nRRD
ACT
001
10
1
00
0
0
0-
2*nFAW+nRRD+1
RDA
0
1
0
1
0
1
00
1
0
0
0
00000000
2*nFAW+nRRD+2
D
100
00
1
00
0
0
0-
Repeat above D Command until 2*nFAW + 2*nRRD - 1
12
2*nFAW+2*nRRD
repeat Sub-Loop 10, but BA[2:0] = 2
13
2*nFAW+3*nRRD
repeat Sub-Loop 11, but BA[2:0] = 3
14
2*nFAW+4*nRRD
D
100
00
3
00
0
0
0-
Assert and repeat above D Command until 3*nFAW - 1, if necessary
15
3*nFAW
repeat Sub-Loop 10, but BA[2:0] = 4
16
3*nFAW+nRRD
repeat Sub-Loop 11, but BA[2:0] = 5
17
3*nFAW+2*nRRD
repeat Sub-Loop 10, but BA[2:0] = 6
18
3*nFAW+3*nRRD
repeat Sub-Loop 11, but BA[2:0] = 7
19
3*nFAW+4*nRRD
D
100
00
7
00
0
0
0-
Assert and repeat above D Command until 4*nFAW - 1, if necessary