Manualshelf

Datasheet

ManualsBrandsAlliance Memory ManualsDRAMDRAM 4GB FBGA
101102103104105106107108109110
Read to Read with CS to CA Latency
DON'T CARE
NOTE 1. BL = 8 ,AL = 0, CL = 11, CAL = 3, Preamble = 1t
CK
NOTE 2. Dout n (or b) = data-out from column n (or column b).
NOTE 3. DES commands are shown for ease of illustration; other commands may be valid at these times.
NOTE 4. BL8 setting activated by either MR0[A1:A0 = 0:0] or MR0[A1:A0 = 0:1] and A12 = 1 during READ command at T3 and T7.
NOTE 5. CA Parity = Disable, CS to CA Latency = Enable, Read DBI = Disable.
NOTE 6. Enabling of CAL mode does not impact ODT control timings. Users should maintain the same timing relationship relative to the command/address bus as when CAL is disabled.
T0 T1 T3 T4 T5 T6 T7 T8
T13
T14
TRANSITIONING DATA
t
RPRE
Dout
n
Dout
n+1
Dout
n+2
Dout
b+7
CK#
CK
DQ
ADDR
T15
DES READ DES DES READ DES DES DES DES
DES
BG b
DES
T17 T18
RL = 11
BG a
DES
DES
T19 T21
Bank,
Col n
t
RPST
Dout
b+1
Dout
b+2
Dout
b+5
Dout
b+6
DES
T22
DES
T23
Dout
n+5
Dout
n+6
Dout
n+7
Dout
b
CS#
t
CAL = 3
t
CCD_S = 4
Bank,
Col b
t
CAL = 3
Bank Group
ADDR
CMD
w/o CS#
DQS, DQS#
RL = 11
Figure 121. Consecutive READ (BL8) with CAL(3) and 1t
CK
Preamble in Different Bank Group
DON'T CARE
NOTE 1. BL = 8 ,AL = 0, CL = 11, CAL = 4, Preamble = 1t
CK
NOTE 2. Dout n (or b) = data-out from column n (or column b).
NOTE 3. DES commands are shown for ease of illustration; other commands may be valid at these times.
NOTE 4. BL8 setting activated by either MR0[A1:A0 = 0:0] or MR0[A1:A0 = 0:1] and A12 = 1 during READ command at T4 and T8.
NOTE 5. CA Parity = Disable, CS to CA Latency = Enable, Read DBI = Disable.
NOTE 6. Enabling of CAL mode does not impact ODT control timings. Users should maintain the same timing relationship relative to the command/ address bus as when CAL is disabled.
T0 T1 T3 T4 T5 T6 T7 T8
T13
T14
TRANSITIONING DATA
t
RPRE
Dout
n
Dout
n+1
Dout
n+2
Dout
b+7
CK#
CK
DQ
ADDR
CMD
w/o CS#
T15
DES DES DES DES DES READ DES DES DES
DES
BG b
DES
T17 T18
RL = 11
BG a
DES
DES
T19 T21
Bank,
Col n
t
RPST
Dout
b+1
Dout
b+2
Dout
b+5
Dout
b+6
DES
T22
DES
T23
Dout
n+5
Dout
n+6
Dout
n+7
Dout
b
CS#
t
CAL = 4
t
CCD_S = 4
Bank,
Col b
t
CAL = 4
READ
Bank Group
ADDR
DQS, DQS#
RL = 11
Figure 122. Consecutive READ (BL8) with CAL(4) and 1t
CK
Preamble in Different Bank Group
AS4C256M16D4
Confidential
- 110 of 201 -
Rev.1.0 Aug.2019