Sdram memory (u39 and u40) – Altera Stratix II EP2S180 DSP Development Board User Manual

Page 35

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Altera Corporation

Core Version a.b.c variable

2–27

Stratix II EP2S180 DSP Development Board Reference Manual

Board Components & Interfaces

SDRAM Memory (U39 and U40)

The SDRAM devices (U39 and U40) are 2 Micron MT48LC4M32B2
devices with PC100 functionality and self refresh mode. The SDRAM is
fully synchronous with all signals registered on the positive edge of the
system clock.

The SDRAM device pins are connected to the Stratix II device. An
SDRAM controller peripheral is included with the Stratix II DSP
Development Kit, Professional Edition, and allows a Nios II processor to
view the SDRAM devices as a large, linearly-addressable memory.

Table 2–23

lists the Stratix II device pin-outs for SDRAM device U39.

Table 2–23. SDRAM Device (U39) Pin-Outs (Part 1 of 2)

Pin Name

Pin Number Connects to Stratix II Pin

A0

25

AD11

A1

26

AD13

A2

27

AB13

A3

60

AE14

A4

61

AB14

A5

62

AC14

A6

63

AD14

A7

64

AE10

A8

65

AB15

A9

66

AC16

A10

24

AB16

A11

21

AE13

BA0

22

AL9

BA1

23

AF11

DQ0

2

AL4

DQ1

4

AJ5

DQ2

5

AH5

DQ3

7

AM4

DQ4

8

AG9

DQ5

10

AH6

DQ6

11

AH7

DQ7

13

AH9

DQ8

74

AM5

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