IS42RM データシートの表示（PDF） - Integrated Silicon Solution

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IS42RM

1M x 16Bits x 4Banks Mobile Synchronous DRAM

Integrated Silicon Solution 

IS42SM/RM/VM16400K

Figure5: Extended Mode Register

BA1 BA0 A11 A10 A9 A8 A7 A6 A5 A4 A3 A2 A1 A0

Address Bus

13

12 11 10

9

8

7

6

5

4

3

2

1

0

1

0

0

0

0

0

0

DS

0

0

PASR

Extended Mode Register (Ex)

E6 E5

0

0

0

1

1

0

1

1

Driver Strength

Full Strength

1/2 Strength

1/4 Strength

1/8 Strength

E2 E1 E0

Self Refresh Coverage

0

0

0 All Banks

0

0

1 Two Banks (BA1=0)

0

1

0 One Bank (BA1=BA0=0)

0

1

1 Reserved

1

0

0 Reserved

1

0

1 Half of One Bank (BA1=BA0=0, Row Address MSB=0)

1

1

0 Quarter of One Bank (BA1=BA0=0, Row Address 2 MSB=0)

1

1

1 Reserved

Note: E13(BA1) must be set to “1”, and E12(BA0) must be set to “0” to select Extended Mode Register (vs. the base Mode Register)

Rev. A | August 2012

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