AMC dimPCI 68VZ328 Instrukcja Użytkownika Pobierz pdf (Strona 18)

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to its working position in the memory map and to initialize SDRAM to address 0x00000000.

SDRAM

The SDRAM used on the dimmPCI

is the MT48LC4M16A2 or compatible 3.0V SDRAM. The

exact SDRAM part or size is dependant on the current SDRAM in stock or available on the

market. The SDRAM is located at 0x00000000 in memory so that the interrupt vector table will be

located in SDRAM.

* NOTE * Setting the registers to recognize different SDRAM sizes doesn’t work as explained in

the Motorola Application Note AN2148-D rev 5.0. Instead a few jumper resistors select the

SDRAM size.

Figure 5. SDRAM Schematic

1 2 ... 13 14 15 16 17 18 19 20 21 22 23 ... 114 115

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AMC dimPCI 68VZ328 Instrukcja Użytkownika Strona 18