21
MEMORY CONFIGURATION
3
3
The HOT-641/P mainboard provides four 168-pin DIMM sockets that make it possible to
install from 8MB up to 1GB of 66 or 100MHz SDRAM. The DIMM socket support
8MB, 16MB, 32MB, 64MB, 128MB and 256MB 3.3V single- or double-side SDRAM
DIMM.
The four DIMM sockets are arranged in four banks of one socket each, Each bank
provides a 64/72-bit wide data path.
HOT-641/P provides optional data integrity features including EC (Error 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-
641/P 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, 256MB
168-pin 3.3V 66 or 100MHz PC SDRAM DIMM
x 1
DIMM 1
8MB, 16MB, 32MB, 64MB, 128MB, 256MB
168-pin 3.3V 66 or 100MHz PC SDRAM DIMM
x 1
DIMM 2
8MB, 16MB, 32MB, 64MB, 128MB, 256MB
168-pin 3.3V 66 or 100MHz PC SDRAM DIMM
x 1
DIMM 3
8MB, 16MB, 32MB, 64MB, 128MB, 256MB
168-pin 3.3V 66 or 100MHz PC SDRAM DIMM
x 1
Table 3-1
