SOYO SY-K7VTA User Manual

Page 14

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Motherboard Description

SY-K7VTA

10

1-7 MEMORY

1-7.1 Main Memory

The motherboard has three DIMM sockets. SDRAM can be installed in

one, two, or three 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

8 MB; maximum DIMM memory size is 256/512 MB. Memory size and

speed can vary between sockets.

The motherboard supports the following memory features:

DRAM interface synchronous with host CPU (66/100/133MHz) or

AGP (66MHz) for more flexible configuration

DRAM interface may be faster than CPU by 33 MHz to allow use

of PC133 memory modules

DRAM interface may be slower than CPU by 33 MHz to allow use

of older memory modules with newer CPUs

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.

Mixed 1M/2M/4M/8M/16M/32MxN DRAMs

The K7VTA supports 3 DIMMs or 6 banks at 133MHz for 1.5GB

(max memory)

Flexible row and column addresses

64-bit data width and 3.3V DRAM interface

Programmable I/O drive capability for MA, command, and MD

signals

Supports PC100 and PC133 SDRAM

Two-bank interleaving for 16Mbit SDRAM support

Two-bank and four bank interleaving for 64Mbit SDRAM support

Independent SDRAM control for each bank

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