1GB-AUTO-AS4C128M8D3 Datasheet, PDF (70/84 Pages) Alliance Semiconductor Corporation – Fully synchronous operation

1Gb Auto-AS4C128M8D3
Figure 46. WRITE(BC8) to WRITE(BC8)
T0
T1
CK#
CK
Notes 3
COMMAND
WRITE
NOP
Notes 4
ADDRESS
Bank
Col n
DQS, DQS#
T2
T3
T4
T5
T6
T7
NOP
NOP
tCCD
WRITE
NOP
Bank
Col b
tWPRE
NOP
NOP
T8
T9
T10
T11
T12
T13
T14
NOP
NOP
NOP
NOP
4 Clocks
NOP
NOP
NOP
tWR
tWTR
tWPST
Notes 2
DQ
WL = 5
Din
Din
Din
Din
Din
Din
Din
Din
Din
Din
Din
Din
Din
Din
Din
Din
n
n+1
n+2
n+3
n+4
n+5
n+6
n+7
b
b+1
b+2
b+3
b+4
b+5
b+6
b+7
WL = 5
NOTES:
1. BL8, WL = 5 (CWL = 5, AL = 0)
2. DIN n (or b) = data-in from column n (or column b).
3. NOP commands are shown for ease of illustration; other commands may be valid at these times.
4. BL8 setting activated by either MR0[A1:0 = 00] or MR0[A1:0 = 01] and A12 = 1 during WRITE command at T0 and T4.
5. The write recovery time (tWR) and write timing parameter (tWTR) are referenced from the first rising clock edge after the last write data shown at T13.
TRANSITIONING DATA
Don't Care
Figure 47. WRITE(BC4) to WRITE(BC4) OTF
T0
T1
CK#
CK
Notes 3
COMMAND
WRITE
NOP
Notes 4
ADDRESS
Bank
Col n
DQS, DQS#
T2
T3
T4
T5
T6
T7
NOP
NOP
tCCD
WRITE
NOP
Bank
Col b
tWPRE
NOP
NOP
tWPST
T8
T9
T10
T11
T12
T13
T14
NOP
NOP
tWPRE
NOP
NOP
4 Clocks
tWPST
NOP
NOP
NOP
tWR
tWTR
Notes 2
DQ
WL = 5
Din
Din
Din
Din
n
n+1
n+2
n+3
WL = 5
Din
Din
Din
Din
b
b+1
b+2
b+3
NOTES:
1. BC4, WL = 5 (CWL = 5, AL = 0)
2. DIN n (or b) = data-in from column n (or column b).
3. NOP commands are shown for ease of illustration; other commands may be valid at these times.
4. BC4 setting activated by MR0[A1:0 = 01] and A12 = 0 during WRITE command at T0 and T4.
5. The write recovery time (tWR) and write timing parameter (tWTR) are referenced from the first rising clock edge at T13 (4 clocks from T9).
TRANSITIONING DATA
Don't Care
Figure 48. WRITE(BC8) to READ(BC4,BC8) OTF
T0
T1
T2
T3
T4
T5
T6
T7
T8
T9
CK#
CK
Notes 3
COMMAND
WRITE
NOP
NOP
NOP
NOP
NOP
NOP
NOP
NOP
NOP
Notes 4
ADDRESS
DQS, DQS#
Notes 2
DQ
Bank
Col n
tWPRE
tWPST
WL = 5
Din
Din
Din
Din
Din
Din
Din
Din
n
n+1
n+2
n+3
n+4
n+5
n+6
n+7
NOTES:
1. RL = 5 (CL = 5, AL = 0), WL = 5 (CWL = 5, AL = 0)
2. DIN n = data-in from column n; DOUT b = data-out from column b.
3. NOP commands are shown for ease of illustration; other commands may be valid at these times.
4. BL8 setting activated by either MR0[A1:0 = 00] or MR0[A1:0 = 01] and A12 = 1 during WRITE command at T0.
READ command at T13 can be either BC4 or BL8 depending on MR0[A1:0] and A12 status at T13.
T10
T11
T12
T13
T14
NOP
NOP
tWTR
NOP
READ
NOP
Bank
Col b
RL = 5
TRANSITIONING DATA
Don't Care
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Rev.1.0 May 2015