Specifications

Installation EP-3S1A
Page 3-6
Section 3-3
System Memory Configuration
Memory Layout
The EP-3S1A supports (3) 168-pin DIMMs (Dual In-line Memory Module). The
DIMMs is for SDRAM (Synchronized DRAM).
 FSB 66/100MHz for 100MHz SDRAM interface only, FSB 133MHz for
100/133MHz SDRAM interface.
 32MB to 256MB using 64MB technology (512MB using 128MB
technology), maximum 512MB on 3 DIMM sockets.
 No Registered SDRAM Memory Modules Support.
 Double Side Unbuffered Memory Module without ECC supports.
 We recommend using at least 125MHz (-8ns) SDRAM at the 100MHz (or
higher) FSB as timing becomes more critical at these higher speeds.
 DIMM SDRAM may be 100MHz (-10ns) or 133MHz (-7.5ns) bus speed.
Figure 6 and Table 1 show several possible memory configurations.
* SDRAM only supports 32, 64, 128, 256MB DIMM modules.
* We recommend to use PC100 Memory Module for bus speed (FSB) between
66MHz/100MHz and PC133 Memory for bus speed (FSB) between 100MHz/
133MHz.
* Using non-compliant memory with higher bus speed (over clocking) may
severely compromise the integrity of the system.
yromeMlatoT
1MMID
)1/0knaB(
2MMID
)3/2knaB(
3MMID
)5/4knaB(
BM652=
mumixaM
*MARDS
,BM821,BM46,BM23
1XBM652
enoN
BM215=
mumixaM
*MARDS
,BM821,BM46,BM23
1XBM652
*MARDS
,BM821,BM46,BM23
1XBM652
enoN
BM215=
mumixaM
*MARDS
,BM821,BM46,BM23
1XBM652
*MARDS
1XBM821,BM46,BM23
*MARDS
1XBM821,BM46,BM23
Table 1
DIMM 1
DIMM 2
DIMM 3
Bank 0/1
Bank 2/3
Bank 4/5
-Synchronous
Figure 6