Philips CE130/55 Service Manual page 56

1 Semiconductor
Read & Write Cycle with Auto Precharge @ Burst Length= = = = 4
0 1 2 3
CLK
CKE
CS
RAS
t
RRD
CAS
ADDR
Ra
A11
A10 Ra
WE
CAS Latency=1
DQ
UDQM,
LDQM
CAS Latency=2
DQ
UDQM,
LDQM
CAS Latency=3
DQ
UDQM,
LDQM
Row Active
Row Active
(A-Bank)
(B-Bank)
4 5 6 7 8
High
Rb Ca
Rb
Qa0 Qa1 Qa2 Qa3
A-Bank Precharge Start
Qa0 Qa1 Qa2 Qa3
A-Bank Precharge Start
Qa0 Qa1 Qa2 Qa3
A-Bank Precharge Start
A Bank Read with
Auto Precharge
9 10 11 12 13 14
Cb
Db0 Db1 Db2 Db3
Db0 Db1 Db2 Db3
Db0 Db1 Db2 Db3
B Bank Write with
Auto Precharge
FEDD56V16160F-02
MSM56V16160F
15 16 17 18 19
t
WR
B Bank Precharge
Start Point
14/31