Motherboard Description SY-K7VEMPRO
8
1-8 MEMORY 1-8.1 Main Memory
The motherboard has two DIMM sockets. SDRAM can be installed in one,
two, or sockets. Using the serial presence detect (SPD) data structure,
programmed into an E²PROM on the DIMM, the BIOS can determine the
SDRAM’s size and speed. Minimum DIMM memory size is 32 MB;
maximum DIMM memory size is 1GB. Memory size and speed can va ry
between sockets.
The motherboard supports the following memory features:
DRAM interface synchronous with host CPU (100/133MHz)
Concurrent CPU, AGP, and PCI access
Supports SDRAM and VCM SDRAM memory types
Different DRAM types may be used in mixed combinations
Different DRAM timing for each bank
Dynamic Clock Enable (CKE) control for SDRAM power
reduction in high speed system.
The K7VEMPRO supports 2 DIMMs or 4 banks at 133MHz for
1GB max memory)
Flexible row and column addresses
64-bit data width only
Supports PC100 and PC133 SDRAM
Independent SDRAM control for each bank
Seamless DRAM command scheduling for maximum DRAM bus
utilization (e.g., precharge other banks while accessing the current
bank)
Four cache lines (16quadwords) of CPU to DRAM write buffers
Four cache lines of CPU to DRAM read prefetch buffers
Read around write capability for non-stalled CPU read
Speculative DRAM read before snoop result
Burst read and write operation
BIOS shadow at 16KB increment
Decoupled and burst DRAM refresh with staggered RAS timing
CAS before RAS or self refresh