W631GG6KB-15 Datasheet, PDF (130/158 Pages) Winbond – Double Data Rate architecture: two data transfers per clock cycle

W631GG6KB
Table 47 – IDD7 Measurement-Loop Pattern¹
ATTENTION: Sub-Loops 10-19 have inverse A[6:3] Pattern and Data Pattern than Sub-Loops 0-9
Data²
0
ACT 0 0 1 1 0 0 0 0 0 0 0
-
1
RDA 0 1 0 1 0 0 0 1 0 0 0 00000000
0
2
D 10000000000
-
...
Repeat above D Command until nRRD - 1
nRRD
ACT 0 0 1 1 0 1 0 0 0 F 0
-
nRRD+1
RDA 0 1 0 1 0 1 0 1 0 F 0 00110011
1
nRRD+2
D 100001000F0
-
...
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
D 100003000F0
-
4
4*nRRD
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
D 100007000F0
-
9 nFAW+4*nRRD
Assert and repeat above D Command until 2 * nFAW - 1, if necessary
2*nFAW+0
ACT 0 0 1 1 0 0 0 0 0 F 0
-
2*nFAW+1
RDA 0 1 0 1 0 0 0 1 0 F 0 00110011
10
D 100000000F0
-
2*nFAW+2
Repeat above D Command until 2 * nFAW + nRRD - 1
2*nFAW+nRRD ACT 0 0 1 1 0 1 0 0 0 0 0
-
2*nFAW+nRRD+1 RDA 0 1 0 1 0 1 0 1 0 0 0 00000000
11
D 10000100000
-
2*nFAW+nRRD+2
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
D 10000300000
-
14 2*nFAW+4*nRRD
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
D 10000700000
-
19 3*nFAW+4*nRRD
Assert and repeat above D Command until 4 * nFAW - 1, if necessary
Notes:
1. DM must be driven LOW all the time. DQS, DQS# are used according to RD Commands, otherwise MID-LEVEL.
2. Burst Sequence driven on each DQ signal by Read Command. Outside burst operation, DQ signals are MID-LEVEL.
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Publication Release Date: Feb. 27, 2013
Revision A04