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Functional Blocks
The following topics provide overviews of the ZT 5504's main features, some of which are
shown in the functional block diagram below.
Functional Block Diagram
Status
LEDs
Pentium III
Processor
Serial
Number
SVGA
Video
(PCI-to-PCI Bridge)
CompactPCI/PSB Architecture
The ZT 5504 is designed to operate in a CompactPCI Packet Switching Backplane
(CompactPCI/PSB) system. The CompactPCI/PSB specification is an extension to the PICMG
2.x family of specifications that overlays a packet-based switching architecture on top of
CompactPCI to create an Embedded System Area Network (ESAN). CompactPCI/PSB
supplements the robust, reliable and hot-swap capable CompactPCI architecture with the
easily integrated, low-cost, high-performance, and extensible Ethernet.
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Serial
Reset
USB 1
USB 0
Port
Flash
Memory
(BIOS)
L1 and L2
Cache
440GX
BGA2
AGPset
Watchdog
Temp.
Timer
Sensor
Keyboard
Floppy Disk
Controller
Controller
Controller
Interface
PMC Slot
Video
Battery
Real-Time Clock
ECC
SDRAM
(512 Mbyte or
1 Gbyte)
PMC
SITE
Baseboard
Power
Management
Controller
1. Introduction
Ethernet B
10BASE-T/
100BASE-TX
Ethernet A
10BASE-T/
100BASE-TX
IDE
HARD
DRIVE
Backplane I/O
14
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