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Memory Configuration
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3
The HOT-597 mainboard provides three 168-pin DIMM sockets that make it possible to
install from 8MB up to 384MB of SDRAM. The DIMM socket support 8MB, 16MB, 32MB,
64MB, and 128MB 3.3V single- or double-side SDRAM DIMM.
The three DIMM sockets are arranged in four banks of one socket each, each bank provides a
64/72-bit wide data path.
HOT-597 provides optional data integrity features including EC (Eccor Checking) or ECC
(Error Checking and Correcting) in the memory array. EC mode provides single and multiple
bit error detection. In ECC mode, during reads from the DRAM, the HOT-597 provides error
checking and correction of the data.
To support ECC, you must use true (opposed to phantom parity generated by TTL chips) 72-
bit parity-type DIMM for all modules.
Install memory in any or all of the banks in any combination as follows:
DIMM
Socket
Memory Modules
Mudule
Quantity
DIMM 0
8MB, 16MB, 32MB, 64MB, 128MB 168-pin
3.3V SDRAM DIMM
x 1
DIMM 1
8MB, 16MB, 32MB, 64MB, 128MB 168-pin
3.3V SDRAM DIMM
x 1
DIMM 3
8MB, 16MB, 32MB, 64MB, 128MB 168-pin
3.3V SDRAM DIMM
x 1
Figure 3
