IC42S32202-6B ICSI [Integrated Circuit Solution Inc], IC42S32202-6B Datasheet - Page 18
IC42S32202-6B
Manufacturer Part Number
IC42S32202-6B
Description
512K x 32 Bit x 4 Banks (64-MBIT) SDRAM
Manufacturer
ICSI [Integrated Circuit Solution Inc]
Datasheet
1.IC42S32202-6B.pdf
(62 pages)
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IC42S32202/L
18
•
•
This bit is used to select the burst write length.
8
9
Test Mode field (A8~A7)
These two bits are used to enter the test mode and must be programmed to “00”in normal operation.
Write Burst Length (A9)
No-Operation command
(RAS#=”H”,CAS#=”H”,WE#=”H”)
is Low).This prevents unwanted commands from being registered during idle or wait states.
Burst Stop command
(RAS#=”H”,CAS#=”H”,WE#=”L”)
The Burst Stop command is used to terminate either fixed-length or full-page bursts.This
command is only effective in a read/write burst without the auto precharge function.The terminated
read burst ends after a delay equal to the CAS#latency (refer to the following figure).The
termination of a write burst is shown in the following figure.
CL K
COMMAN D
CAS# latency=2,3
DQ’s
CLK
COMMAND
CAS# latency=2
tCK2,DQ’s
CAS# latency=3
tCK3,DQ’s
Termination of a Burst Read Operation (Burst Length > 4,CAS#Latency =2,3)
A9
0
1
A8
0
0
1
The No-Operation command is used to perform a NOP to the SDRAM which is selected (CS#
READ A
T0
T0
Termination of a Burst Write Operation (Burst Length =X)
NOP
Write Burst Length
Burst
Single Bit
A7
0
1
X
WRITE A
DIN A 0
T 1
T 1
NOP
Test Mode
normal mode
Vendor Use Only
Vendor Use Only
DOUT A 0
DIN A 1
T2
NOP
T2
NOP
DOUT A 0
DIN A 2
DOUT A 1
T3
NOP
T3
NOP
Input Data for the Write is masked.
Burst Stop
Burst Stop
don’t care
DOUT A 2
DOUT A 1
T4
T4
DOUT A 2
DOUT A 3
T5
NOP
The Burst ends after a delay equal to the CAS# latency.
T5
NOP
DOUT A 3
T6
NOP
Integrated Circuit Solution Inc.
T6
NOP
T7
NOP
T7
NOP
DR042-0C 08/17/2004
NOP
T 8
NOP
T 8
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