is42g32256 ETC-unknow, is42g32256 Datasheet - Page 16

• Manufacturer Part Number: is42g32256
• Description: 256k 16-mbit Synchronous Graphics
• Manufacturer: ETC-unknow

IS42G32256
16
Notes:
1. To prevent bus contention, there should be at least one gap between data in and data out.
2. To prevent bus contention, DQM should be issued which makes at least one gap between
data in and data out.
CMD 1
CMD 2
CMD 3
CMD 4
CMD 1
CMD 2
CMD 3
CMD 4
CMD 5
DQM
DQM
DQM
DQM
DQM
DQM
DQM
DQM
DQM
CLK
CLK
DQ
DQ
DQ
DQ
DQ
DQ
DQ
DQ
DQ
1. CLOCK LATENCY = 2, BURST LENGTH = 4.
2. CLOCK LATENCY = 3, BURST LENGTH = 4.
Figure 7.
RD
RD
RD
RD
RD
RD
RD
RD
RD
CAS
CAS
CAS
CAS
CAS
WR
RD
D0
D0
Interrupt (II): Read Interrupted by Write and DQM
HI-Z
D0
D0
WR
WR
Q0
Q0
D1
D1
HI-Z
(NOTE 1)
D0
D0
WR
WR
D1
D1
Q0
D2
D2
HI-Z
HI-Z
(NOTE 2)
D2
D1
D2
D1
D0
D0
WR
WR
D3
D3
HI-Z
WR
D0
D2
D2
D3
D3
D1
D1
D1
D3
D2
D3
D2
Integrated Silicon Solution, Inc.
D2
D3
D3
ADVANCE INFORMATION SR037-0C
D3
ISSI
09/10/98
®