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Technical Reference Guide
2.4.2 CHIPSET
The D315 model uses a NVidia NForce 220 chipset while the D325 model uses the NVidia
NForce2 chipset. Table 2-3 provides a comparison of the two chipset types.
Table 2-3. Chipset Functions
Table 2-3. NVidia Chipset Comparison
Component NForce 220 NForce 2 420
North Bridge
FSB speed (max)
Memory Bandwidth (max)
Graphics Processing Unit
AGP Interface (max)
IGP-64
266-MHz
64-bit
GeForce2 MX
4X
IGP-128
333-MHz
128-bit
GeForce4 MX
8X
South Bridge
PCI bus I/F
LPC bus I/F
Two IDE UATA/100 controllers
AC Link controller
IRQ controller
Power management logic
Two USB 1.1 controllers
One USB 2.0 controller
MCP
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
MCP-2
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
NOTE:
Unless otherwise indicated, all functions are common to both chipsets.
2.4.3 SUPPORT COMPONENTS
Input/output functions not provided by the chipset are handled by other support components.
Some of these components also provide “housekeeping” and various other functions as well.
Table 2-4 shows the functions provided by the support components.
Table 2-4. Support Component Functions
Table 2-4.
Support Component Functions
Component Name Function
LPC47B367 I/O Controller Keyboard and pointing device I/F
Diskette I/F
Serial I/F (1)
Parallel I/F (1)
AGP, PCI reset generation
Interrupt (IRQ) serializer
Power button logic
GPIO ports
AD1885 (D315) or
AD1981 (d325) Audio Codec
Audio mixer
Digital-to-analog converter
Analog-to-digital converter
Analog I/O
6-channel audio support (AD1981 only)
Compaq D315 and hp d325 Personal Computers
Featuring the AMD Athlon XP Processor
Second Edition - March 2003
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