System Memory Configuration; Agp Interface - SOLTEK SL-65ME User Manual

65ME / 65ME+

1-13 SYSTEM MEMORY CONFIGURATION

• This Intel 82815 GMCH chipset integrates a system memory controller
that supports a 64-bit 100 / 133 MHz SDRAM array. The only DRAM type
supported is industry standard Synchronous DRAM (SDRAM). The
SDRAM controller interface is fully configurate through a set of control
registers.

1-14 AGP INTERFACE

• A single AGP connector is supported by the Intel 82815 GMCH AGP
interface. The AGP buffers operate in one of two selectable modes in
order to support the AGP Universal Connector:
1) 3.3V drive, not 5 volt safe - This mode is compliant to the AGP 1.0 and 2.
0 specs.
2) 1.5V drive, not 3.3 volt safe - This mode is compliant with the AGP 2.0
spec.
The following table shows the AGP data rate and the signaling levels sup-
ported by the 82815 GMCH chipset.
• The 82815 chipset has a new type of clocking architecture. It has inte-
grated SDRAM buffers that run at either 100 or 133MHz, independent of
the system bus frequency. See below for a table of supported system bus
and system memory bus frequencies. The system bus frequency is se-
lectable between 66MHz, 100MHz or 133MHz. The 82815 GMCH uses a
copy of the USB clock as the DOT Clock input for the graphics pixel clock
PLL.
12
Signaling Level
Data Rate 1.5
1x AGP Yes
2x AGP Yes
4x AGP Yes
V 3.3 V
Yes
Yes
No