Digi NS9750 User Manual

Page 203

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w w w . d i g i e m b e d d e d . c o m

1 7 9

M e m o r y C o n t r o l l e r

Table 109 shows the outputs from the memory controller and the corresponding
inputs to the 128M SDSRAM (4Mx32, pins 13 and 14 used as bank selects).

1

1

12

3

0

0

11

2

Output address
(

ADDROUT

)

Memory device
connections

AHB address to row
address

AHB address to
column address

14

BA1

23

23

13

BA0

22

22

12

-

-

-

11

11

21

-

10

10/AP

20

AP

9

9

19

-

8

8

18

-

7

7

17

9

6

6

16

8

5

5

15

7

4

4

14

6

3

3

13

5

2

2

12

4

1

1

11

3

0

0

10

2

Table 109: Address mapping for 128M SDRAM (4Mx32, BRC)

Output address
(

ADDROUT

)

Memory device
connections

AHB address to row
address

AHB address to
column address

Table 108: Address mapping for 64M SDRAM (8Mx8, BRC)

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