Philips CE130/55, Service Manual

Page: 54 / 73

FEDD56V16160F-02
1
Semiconductor MSM56V16160F
12/31
*Note: 1. When
CS
is set “High” at a clock transition from “Low” to “High”, all inputs except CKE, UDQM
and LDQM are invalid.
2. When issuing an active, read or write command, the bank is selected by A11.
A11 Active, read or write
0 Bank A
1 Bank B
3. The auto precharge function is enabled or disabled by the A10 input when the read or write command
is issued.
A10 A11 Operation
0 0 After the end of burst, bank A holds the idle status.
1 0 After the end of burst, bank A is precharged automatically.
0 1 After the end of burst, bank B holds the idle status.
1 1 After the end of burst, bank B is precharged automatically.
4. When issuing a precharge command, the bank to be precharged is selected by the A10 and A11 inputs.
A10 A11 Operation
0 0 Bank A is precharged.
0 1 Bank B is precharged.
1 X Both banks A and B are precharged.
5. The input data and the write command are latched by the same clock (Write latency=0).
6. The output is forced to high impedance by (1CLK+ t
OHZ
) after UDQM, LDQM entry.