Ampro Corporation Littleboard 550 manual Major Integrated Circuits ICs, Via, Cpu

Chapter 2 Product Overview

Major Integrated Circuits (ICs)

Table 2-1 lists the major integrated circuits, including a brief description of each, on the LittleBoard 550 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 (U1)	VIA	Eden ESP 10000,	CPUs offered at 1GHz,	Embedded
	Technologies, Inc.	ESP 5000, ESP 3000	533MHz, and 300MHz	CPU
Northbridge	VIA	VT8606 (Twister-T)	Northbridge functions plus	Memory
(U2)	Technologies, Inc.		Video	and Video
Southbridge	VIA	VT82C686B	Southbridge provides most	I/O
(U3)	Technologies, Inc.		standard I/O functions	Functions
Super I/O	Standard	SP37E760	This Super I/O controller	Serial
(U13)	Microsystems		provides two additional serial	ports
			ports
Ethernet	Intel	82551ER	Ethernet Controllers provided	Ethernet
Controllers			by two independent	functions
(U5, U6)			10/100BaseT Ethernet.

L9

J5

J3

L8

F5

J4

On Board

J2

CPU (U1)

L3

Voltage

No

Regulation

(

Northbridge (U2)

Circuitry

L2

U2)

CPU (U1)

rthbridg

e

J18

L5

U34

J31

Audio

Ethernet 1 (U5)

U10

Et

Amplifier (U27)

her

U27

n

J1

U21

(U5)

et

J21

Audio

U15

Southbr

U26

CODEC (U26)

Southbridge (U3)

(U3) idge

U25

Ether

Y5

J28

Clock (U4)

( n

U

6)et

U24

U22

U4

Y1

Ethernet 2 (U6)

U33

Thermal

U11

U16

J23

U20

U23

Monitor (U33)

U17

JP5

U19

BAT1

Battery (Bat1)

JP6

Flash (U17)

U9

JP4

JP3

JP8

JP7

J11

J7

J32

J15

J13

U14

U12

U8

U7

J14

01a

J17

J24

LB550

J16

J12

J10

Figure 2-3. LittleBoard 550 Component Location (Top view)

LittleBoard 550 Reference Manual 11