Table of Contents
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System Components and Features
Figure 1–1 AlphaPC 164UX Functional Block Diagram
Index
Control
Alpha 21164
Microprocessor
Tag Data
Pdata
Pecc
Address
Commands
Flash ROM
PCI-to-PCI
Bridge
Secondary PCI Bus
5 Dedicated 32-Bit PCI Slots
Introduction to the AlphaPC 164UX Motherboard
1–2
18
2/4MB L3
Bcache
12
128
16
Control
36
DECchip 21174-CA
Control, I/O Interface,
Primary PCI Bus
Ethernet
Controller
SROM
SCSI
Buffer
Controller
Real Time
Clock
128-Bit Data
Data Switches
(X5)
Address/Control
and Address
PCI-to-ISA
Bridge
4 Devices
Combination
Controller
KBD
Controller
168-Pin
Unbuffered
SDRAM
DIMM
Sockets
(X6)
1 Dedicated 64-Bit PCI Slot
1 Dedicated ISA Slot
Diskette
Parallel Port
2 Serial Ports
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