DDR4-2933 Speed Bins and Operations
Speed Bin
DDR4-2933Y
CL-nRCD-nRP
21-21-21
min
Unit
NOTE
Parameter
Symbol
max
14.3214
(13.75)5,12
Internal read command to
first data
tAA
18.00
ns
12
Internal read command to
first data with read DBI
enabled
tAA_DBI
tAA(min) + 4nCK
tAA(max) + 4nCK
ns
12
14.32
(13.75)5,12
14.32
ACT to internal read or
write delay time
tRCD
tRP
-
ns
ns
ns
ns
12
12
12
12
PRE command period
-
(13.75)5,12
ACT to PRE command
period
tRAS
tRC
32
9 x tREFI
-
46.32
(45.75)5,12
ACT to ACT or REF com-
mand period
Read
Normal
DBI
CL = 9 CL = 11 tCK(AVG)
CL = 10 CL = 12 tCK(AVG)
Reserved
Reserved
ns 1,2,3,4,11
CWL =
9
1.5
1.6
ns
ns
1,2,3,11
1,2,3,4
CWL = CL = 10 CL = 12 tCK(AVG)
9,11
CL = 11 CL = 13 tCK(AVG)
CL = 12 CL = 14 tCK(AVG)
1.25
1.25
<1.5
<1.5
ns 1,2,3,4,13
ns
ns
1,2,3,15
1,2,3,4
CWL = CL = 12 CL = 14 tCK(AVG)
10,12
Reserved
Reserved
CL = 13 CL = 15 tCK(AVG)
CL = 14 CL = 16 tCK(AVG)
1.071
1.071
<1.25
<1.25
ns 1,2,3,4,15
ns
ns
1,2,3,15
1,2,3,4
CWL = CL = 14 CL = 17 tCK(AVG)
11,14
CL = 15 CL = 18 tCK(AVG)
CL = 16 CL = 19 tCK(AVG)
0.937
0.937
<1.071
<1.071
ns 1,2,3,4,15
ns
ns
1,2,3,15
1,2,3,4
CWL = CL = 15 CL = 18 tCK(AVG)
12.16
Reserved
Reserved
CL = 16 CL = 19 tCK(AVG)
CL = 17 CL = 20 tCK(AVG)
CL = 18 CL = 21 tCK(AVG)
ns 1,2,3,4,15
ns 1,2,3,4,15
0.833
0.833
0.937
0.937
ns
ns
1,2,3,15
1,2,3,4
CWL = CL = 17 CL = 20 tCK(AVG)
14,18
Reserved
Reserved
CL = 18 CL = 21 tCK(AVG)
CL = 19 CL = 22 tCK(AVG)
CL = 20 CL = 23 tCK(AVG)
ns 1,2,3,4,15
ns 1,2,3,4,15
0.75
0.75
<0.833
<0.833
ns
ns
1,2,3,15
1,2,3,4
1,2,3,4
1,2,3,4
1,2,3
CWL = CL = 19 CL = 23 tCK(AVG)
16,20
Reserved
Reserved
CL = 20 CL = 24 tCK(AVG)
CL = 21 CL = 26 tCK(AVG)
CL = 22 CL = 26 tCK(AVG)
Supported CL Settings
ns
0.682
0.682
<0.75
<0.75
ns
ns
10,(11),12,(13),14,(15),16,(17),18,(19),20,
21,22
nCK
13
Supported CL Settings with read DBI
Supported CWL Settings
12,(13),14,(15),16,(18),19,(20),21,(22),23,
25,26
nCK
nCK
13
9,10,11,12,14,15,16,18,20
Rev. 1.0 / Jan.2019
40