Phytec miniMODUL-537, Руководство по оборудованию

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Memory Configuration and Address-Decoding
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PHYTEC Meßtechnik GmbH 1993 L-006e_2
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4 Memory Configuration and Address-Decoding
4.1 Standard-Memory-Configuration
The miniMODUL-537 allows different memory configurations, which
depend on the memory chips and on some jumper settings. In general
the memory chips are selected in blocks of 32 kByte. Chip-enable
signals with a finer partitioning is not possible with the decoder of the
module. This can be achieved with an external chip.
Despite of the simple, module-internal address-decoding, the
miniMODUL-537 doesn’t restrict the address decoding for special
applications. By the possibility to turn off the module-internal
decoding externally, you are absolutely free for your own address
decoding. On request we program PALs, GALs and EPLDs according
to customer specifications.
The standard installation is 32Kbyte RAMs and 0 or 32 kByte
EPROMs. The maximum EPROM capacity is 64 kByte. The
maximum RAM capacity is a 128K*8 SRAM in U13. (Available
according to the manufacturer in the middle of 1991). U13 is prepared
for this RAM chip. The RAM is accessed in one of the four 32 kByte
memory banks. The bank-selection is achieved by the two external
connections B0 and B1, which can be connected to arbitrary port pins.
With the maximum capacity in U12 a total maximum of 160 kByte
RAM can be installed.
Optional in U12 also a 8/32 kByte EEPROM can be installed.