ACT-D1M96S Ver la hoja de datos (PDF) - Aeroflex Corporation
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ACT-D1M96S Datasheet PDF : 14 Pages
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Table 3 — Data-Mask (DQM) Command Truth Table †
Command ‡
State of Bank(s)
DQML
DQMU§
(n)
Data In (n)
Data Out
(n+2)
Mnemonic
T = deac and
—
X
N/A
Hi-Z
—
B = deac
T = actv and
—
B = actv
X
N/A
Hi-Z
—
(no access operation)¶
Data-in enable
T = Write or
B = Write
L
V
N/A
ENBL
Data-in mask
T = Write or
B = Write
H
M
N/A
MASK
Data-out enable
T = Write or
B = Write
L
N/A
V
ENBL
NOTES:
† For execution of these commands on cycle n:
- CKE (n) must be high, or
-t CES and n CLE must be satisfied for clock suspend exit.
CS(n), RAS(n), CAS(n), WE(n), and A0-A11 are don’t cares.
. ‡ All other unlisted commands are considered vendor-reserved commands or illegal commands.
§ DQML controlsDQ0-7, DQ16-23, DQ32-39, DQ48-55, DQ64-71, DQ80-87 and DQMU controls DQ8-15, DQ24-31, DQ40-47, DQ56-63, DQ72-79, and DQ88-95
¶ A bank is no longer in an access operation one cycle after the last data-out cycle of a read operation, and two cycles after the last data-in cycle
of a write operation. Neither the PDE nor the HOLD command is allowed on the cycle immediately following the last data-in cycle of a write operation.
Legend:
n = CLK cycle number, L = Logic low, H = Logic high, X = Don’t care, either logic low or logic high, V = Valid, M = Masked input data, N/A = Not applicable,
T = Bank T, B = Bank B, actv = Activated, deac = Deactivated, write = Activated and accepting data inputs on cycle n, read = Activated and delivering data outputs on cycle (n + 2)
Table 4 — Serial 4-Word Burst Sequences
INTERNAL COLUMN ADDRESS A1-A0, BA1-BA0
DECIMAL
BINARY
START
2ND
3RD
4TH
START
2ND
3RD
4TH
0
1
2
3
00
01
10
11
1
2
3
0
01
10
11
00
2
3
0
1
10
11
00
01
3
0
1
2
11
00
01
10
Table 5 – Serial 8-Word Burst Sequences
START 2ND
0
1
1
2
2
3
3
4
4
5
5
6
6
7
7
0
3RD
2
3
4
5
6
7
0
1
Aeroflex Circuit Technology
INTERNAL COLUMN ADDRESS A2-A0, BA2-BA0
DECIMAL
BINARY
4TH 5TH 6TH 7TH 8TH START 2ND 3RD 4TH 5TH 6TH 7TH 8TH
3
4
5
6
7
000 001 010 011 100 101 110 111
4
5
6
7
0
001 010 011 100 101 110 111 000
5
6
7
0
1
010 011 100 101 110 111 000 001
6
7
0
1
2
011 100 101 110 111 000 001 010
7
0
1
2
3
100 101 110 111 000 001 010 011
0
1
2
3
4
101 110 111 000 001 010 011 100
1
2
3
4
5
110 111 000 001 010 011 100 101
2
3
4
5
6
111 000 001 010 011 100 101 110
7
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