Functional Block Diagram - NEC Versa 550 Series Service Manual

3-2 Hardware Functional Overview

FUNCTIONAL BLOCK DIAGRAM

Bank 0
4MB / 8MB
(on-board)
Bank 1
4, 8, 16MB
(DIMM)
Cyrix
486DX4-75
or
M1sc-100
LCM
INVERTER
14.318MHz X'TAL
FLASH BIOS
128KB
CORE CHIP
UMC 8486
VIDEO RAM
VGA CHIP
C&T 65545
CRT ON
66MHz
CLOCK GEN
24MHz
AVASEM
14.318MHz
AV9154-04
Figure Section 3-1 Functional Block Diagram
PCMCIA
UMC
8365 + 8366
KB
CONTROLLER
MOTOROLA G10
512KB OR
1MB
AC
ADAPTER
BATTERY IN
CARD 0
CARD 1
TRACKBALL
EXT. KB/MOUSE
INTERNAL KB
SUPER I/O
UMC
UM82C863F
+3.45V
+5V
DC/DC
CONVERTER
+12V
DC-IN
COM1
PRINTER
HDD
FDD