ED14R126-12AMBTEL datasheet(44/51 Pages) EOREX

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Table 4 - IDD1 Measurement-Loop Patterna)

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Datab)

ACT

1,2

D, D

3,4

D, D

...

repeat pattern 1...4 until nRCD - 1, truncate if necessary

nRCD

00000000

...

repeat pattern 1...4 until nRAS - 1, truncate if necessary

nRAS

PRE

...

repeat pattern 1...4 until nRC - 1, truncate if necessary

1*nRC+0

ACT

1*nRC+1,2

D, D

1*nRC+3,4

D, D

...

repeat pattern nRC + 1,...4 until nRC + nRCE - 1, truncate if necessary

1*nRC+nRCD

00110011

...

repeat pattern nRC + 1,...4 until nRC + nRAS - 1, truncate if necessary

1*nRC+nRAS

PRE

...

repeat pattern nRC + 1,...4 until *2 nRC - 1, truncate if necessary

2*nRC

repeat Sub-Loop 0, use BA[2:0] = 1 instead

4*nRC

repeat Sub-Loop 0, use BA[2:0] = 2 instead

6*nRC

repeat Sub-Loop 0, use BA[2:0] = 3 instead

8*nRC

repeat Sub-Loop 0, use BA[2:0] = 4 instead

10*nRC

repeat Sub-Loop 0, use BA[2:0] = 5 instead

12*nRC

repeat Sub-Loop 0, use BA[2:0] = 6 instead

14*nRC

repeat Sub-Loop 0, use BA[2:0] = 7 instead

a) DM must be driven LOW all the time. DQS, DQS are used according to RD Commands, otherwise MID-

LEVEL.

b) Burst Sequence driven on each DQ signal by Read Command. Outside burst operation, DQ signals are

MID_LEVEL.

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