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Major integrated circuits (ics) – Ampro Corporation Single Board Computer Littleboard 550 User Manual

Page 17

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Chapter 2

Product Overview

LittleBoard 550

Reference Manual

11

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
Technologies, Inc.

Eden ESP 10000,
ESP 5000, ESP 3000

CPUs offered at 1GHz,
533MHz, and 300MHz

Embedded
CPU

Northbridge
(U2)

VIA
Technologies, Inc.

VT8606 (Twister-T)

Northbridge functions plus
Video

Memory
and Video

Southbridge
(U3)

VIA
Technologies, Inc.

VT82C686B

Southbridge provides most
standard I/O functions

I/O
Functions

Super I/O
(U13)

Standard
Microsystems

SP37E760

This Super I/O controller
provides two additional serial
ports

Serial
ports

Ethernet
Controllers
(U5, U6)

Intel

82551ER

Ethernet Controllers provided
by two independent
10/100BaseT Ethernet.

Ethernet
functions

L

B

55

0_0

1a

L8

L3

L2

L5

CPU (U1)

J2

F5

J5

J4

J3

D

IMM1

J31

J21

U27

U26

U4

J28

Y1

Y5

U20

U2
3

U

1

9

U9

BA

T

1

Et

he

rn

et

(U

5)

No

rt

hb

ridg

e

(

U2

)

S

out

hb

ridge

(

U

3)

J1

J18

U3
4

U1
0

U1
5

U17

U1
1

U16

Et

he

rn

et

(U

6)

U21

U25

U14

U12

U8

U7

J12

J17

J14

J13

J15

J16

J24

J11

JP4

JP3

JP7

JP8

JP5

JP6

J10

J7

J32

J23

U24

U22

U33

L9

CPU (U1)

Northbridge (U2)

Southbridge (U3)

Ethernet 2 (U6)

Ethernet 1 (U5)

Audio
Amplifier (U27)

Audio
CODEC (U26)

Flash (U17)

Battery (Bat1)

Clock (U4)

On Board
Voltage
Regulation
Circuitry

Thermal
Monitor (U33)

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