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Chapter 2 Product Overview
10 Reference Manual LittleBoard 550
Block Diagram
Figure 2-3 shows the functional components of the board.
LB550BlkDiagm
VIA EDEN
CPU
™
SDRAM
SODIMM
Southbridge
VT82C686B
Memory Bus
Ethernet
Controller
82251ER
Magnetics-
RJ45
Keyboard/
Mouse
SMBus
Northbridge
VT8606
PC104-Plus
Bus Connector
PCI Bus
IrDA 1.1
Floppy
AC’97
CODEC
COM3
COM4
IDE Primary
IDE Secondary
USB Port 4
USB Port 3
USB Port 2
USB Port 1
USB
A
TA
PC 104
Connector
Super I/O
Dual Serial Port
COM1
COM2
ISA Bus
AC’97 Link
Clock
Temp
512kB
ROM
BIOS
IDE Devices,
(HDDs, CompactFlash,
CD-ROM, etc.)
Ethernet
Controller
82251ER
CRT VGA
TFT LCD
LVDS LCD
Magnetics-
RJ45
Parallel
Figure 2-2. LittleBoard 550 Functional Block Diagram