w9425g8dh Winbond Electronics Corp America, w9425g8dh Datasheet - Page 49

• Manufacturer Part Number: w9425g8dh
• Description: 8m ? 4 Banks ? 8 Bits Ddr Sdram
• Manufacturer: Winbond Electronics Corp America

11.21 4 Bank Interleave Read Operation (CL = 2, BL = 2)
11.22 4 Bank Interleave Read Operation (CL = 2, BL = 4)
CLK
CLK
C M D
D Q
C L K
C L K
C M D
D Q S
D Q
D Q S
ACTa/b/c/d
READ Aa/b/c/d : Read w ith Auto Pre.CM D of bank a/b/c/d
APa/b/c/d
A C T a /b /c /d
R E A D A a /b /c /d : R e a d w ith A u to P re .C M D o f b a n k a /b /c /d
A P a /b /c /d
AC Ta
A C T a
t
R RD
t
: Auto Pre. of bank a/b/c/d
: Bank Act. C M D of bank a/b/c/d
R R D
: A u to P re . o f b a n k a /b /c /d
: B a n k A c t. C M D o f b a n k a /b /c /d
t
R C D (a )
t
AC Tb
R C D (a)
A C T b
t
t
R AS(a)
R A S (a )
R E A D A a
t
t
R R D
R R D
ACTc
A C T c
C L (a )
t
t
- 49 -
R C(a)
R C (a )
P re a m b le
t
t
t
t
R C D (b)
R C D (b )
R AS(b)
R A S (b )
R EADAa
R E A D A b
t
t
A P a
R R D
R R D
Q 0 a
t
t
R C D (c )
R A S (c )
Q 1 a
A C T d
C L (b )
ACTd
C L(a)
APa
Q 0 a
Pream ble
Publication Release Date: Nov. 20
t
t
t
R C D(c)
RAS(c)
R P (a )
Q 1 a
R E A D A c
R EAD Ab
t
A P b
t
R R D
R R D
t
R P
Q 2 a
Q 0a
t
t
t
t
R C D (d )
R A S (d )
Postam ble
R C D (d)
RAS(d)
Q 3 a
Q 1a
A C T a
C L (c )
AC Ta
CL(b)
APb
Q 0 b
Pream ble
Q 1 b
R E A D A d
READ Ac
A P c
Q 2 b
Q0b
Q 3 b
Q 1b
Revision A4
,
2007