Technical data

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Hardware Preparation and Installation
1
Memory Mezzanine Options
Two 100-pin connectors (J15 and J22) are provided on the MVME172LX
to accommodate optional memory mezzanine boards. Two memory
mezzanine options are available for the MVME172LX:
❏ 4, 8, 16MB parity DRAM
❏ 4, 8, 16, 32, 64MB ECC DRAM
The mezzanine boards may either be used individually or be combined in
a stack (not more than two deep). The following connector options govern
stacking arrangements:
❏ The 4, 8, and 16MB parity DRAM board has connectors on the
bottom only; it must be either the only mezzanine or the upper
mezzanine.
❏ All ECC DRAM boards are available with two connector options:
– Connectors on both the top and bottom
– Connectors on the bottom only; must be either the only
mezzanine or the upper mezzanine
When the mezzanines are stacked, the following combinations are
possible:
Table 1-7. Memory Mezzanine Stacking Options
Upper None None Parity DRAM ECC DRAM
Lower Parity DRAM ECC DRAM ECC DRAM ECC DRAM