Specifications

Chapter 2 Product Overview
10 Reference Manual LittleBoard 800
Major Integrated Circuits (Chips)
Table 2-1 lists the major integrated circuits, including a brief description of each, on the LittleBoard 800
and Figures 2-3 and 2-4 show the locations of the major integrated circuits (chips).
Table 2-1. Major Integrated Circuit Description and Function
Chip Type Mfg. Model Description Function
CPUs (U1) Intel Pentium M or
Celeron M
CPUs offered at 1.4GHz (LV
Pentium M), 1.0GHz (ULV Celeron
M), or 600MHz (ULV Celeron M)
Embedded
CPUs
Memory Hub (U2) Intel 82855GME Memory functions plus Video Memory and
Video
I/O Hub (U3) Intel 82801DBM Some of the I/O functions I/O Functions
Super I/O 1 & 2
(U14, U16)
SMSC LPC47B272 The remaining I/O controller
functions
I/O Functions
Ethernet Controllers
(U9, U11)
Intel 82551ER
82541(GI/PI)
10/100BaseT and 10/100/1000BaseT
Ethernet controllers respectively
Ethernet
functions
ISA Bridge (U41) ITE IT8888F PCI-to-ISA bridge conversion ISA Bus
LB800RF_01a
J26
J3
J9
JP1
CPU
Memory Hub
I/O Hub
L6
L5
J14
U7
J1
J8
JP3
JP4
JP5
J10 J23
DIMM1
J19
J7
J6
JP6
J2
J11
J12
J17
JP7
JP2
J15
T1
F1
U19 U18
U15
JP19
L7
L12
U1
U2
Q13 Q12
Q8 Q7
U13
U23
U32
L16
U25
U35
Q22
Q10 Q14
Q18
Q17
U31 Q24
Q21
U40
U24
U45
U37
U28
U36
U42
Y5
Y3
U39
U3
J13
J21
J16
Q2
Q9
Q5
D6
Q1
CPU (U1)
I/O Hub
(U3)
(Southbridge)
Flash (U13)
Audio
CODEC
(U7)
Memory Hub
(U2)
(Northbridge)
Clock (U23)
10/100BaseT
Magnetics
(U31)
1000BaseT
Magnetics
(T1)
Figure 2-3. Component Location (Top view)