Specifications

PCA-6178 User's Manual

1.9 System Memory

The top-left edge of the PCA-6178 contains three sockets for 168-pin

dual inline memory modules (DIMMs). All three sockets use 3.3 V

unbuffered synchronous DRAMs (SDRAM). DIMMs are available in

capacities of 16, 32, 64, 128, or 256 MB. The sockets can be filled in

any combination with DIMMs of any size, giving your PCA-6178

single board computer between 16 MB and 768 MB of memory. Use the

following table to calculate the total DRAM memory within your

computer:

Table 1-8: DIMM module allocation table

Socket number 168-pin DIMM memory

1 (16, 32, 64, 128 or 256 MB) x 1

2 (16, 32, 64, 128 or 256 MB) x 1

3 (16, 32, 64, 128 or 256 MB) x 1

1.9.1 Sample calculation: DIMM memory capacity

Suppose you install a 128 MB DIMM into your PCA-6178's socket 1

and a 32 MB DIMM into sockets 2 and 3. Your total system memory

is 192 MB, calculated as follows:

Table 1-9: DIMM memory capacity sample calculation

Socket number 168-pin DIMM memory Total memory

1 128 MB x 1 128 MB

2 32 MB x 1 32 MB

3 32 MB x 1 32 MB

Total memory 192 MB