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This chapter provides an overview of the UP2000 product consisting of a
UP2000 Motherboard and one or two Alpha Slot B Modules.
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Table 1-1 provides a summary of the UP2000 product features.
Table 1-1
UP2000 Product Features
Feature
Description
Manufacturer
Physical Form Factor: ATX Extended (12 inch X 13 inch)
Daughter Card
Interface:
Supports one or two Alpha Slot B Modules using the
Alpha 21264 microprocessor, at speeds of 667 or 750 MHz
Alpha
Processor, Inc.
Chipset:
21272 (Tsunami)—One Cchip, four Dchips, and two
Pchips provide the following:
Compaq
• Maximum 83 MHz system bus with Double Data Rate
(DDR) transfers, maximum bandwidth of
2.67 GBytes/second
• One 256-bit memory bus
• One 64-bit, 33 MHz PCI bus with two 64-bit slots and
one 32-bit slot, and one 32-bit, 33 MHz PCI bus with
three 32-bit slots
Cache:
External Bcache with 128-bit data path for an Alpha
Slot B Module supports:
• 2MB or 4 MB cache per 667 MHz processor
• 4MB or 8 MB cache per 750 MHz processor
• Late Write (LW) Synchronous SRAMS (SSRAMs)
Main Memory:
• Eight 168-pin Dual Inline Memory Module (DIMM)
sockets, up to 2 GB (256 MB per DIMM)
• Supports Phase Locked Loop (PLL) or Register-based
Synchronous Direct Random Access Memory
(SDRAM) Serial Presence Detect (SPD) modules of
64 MB, 128 MB, and 256 MB
• Low Voltage Transistor-Transistor Logic (LVTTL)
compatible memory I/O
Power:
ATX power connector, sup3.3 Vdc, ± 5 Vdc, and
± 12 Vdc