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Chapter 2 Product Overview
XTX 820 Reference Manual 11
Major Integrated Circuits (ICs)
Table 2-1 lists the major integrated circuits (ICs or chips), including a brief description, on the XTX 820
module and Figure 2-4 shows the location of the major chips.
Table 2-1. Major Integrated Circuit Description and Function
Chip Type Mfg. Model Description Function
CPU (U6) Intel Celeron M or
Pentium M
CPUs at 1.0 GHz, 1.4 GHz,
and 1.8 GHz
Embedded
CPU
Memory & Graphics
Hub (U8)
Intel
82915GM
(GMHC)
Northbridge functions plus
Video
Memory and
Video
I/O Hub (U4) Intel 82801FBM
(ICH6M)
Provides most standard I/O
Southbridge functions plus
Ethernet MAC functions
I/O Functions
Plus Ethernet
Super I/O (U11) Winbond 83627HG
Provides reminder of I/O
functions
I/O Functions
Ethernet (U3) Intel 82562GZ Uses MAC from I/O Hub to
provide Ethernet Controller
Physical
Ethernet
Audio (U21) Realtek ALC655 Audio CODEC controller AC'97 Audio
U4
U8
U10
U3
U2
U16
U11
U6
J5
U4
U8
U10
U3
U2
U16
U11
U6
J5
Clock (U10)
Memory Hub (U8)
(Northbridge)
I/O Hub (U4)
(Southbridge)
Ethernet (U3)
CPU (U6)
Super I/O (U11)
DDR SODIMM
Socket (J5)
XTX820_01a
Figure 2-4. XTX 820 (Top view)