L3 Bcache Subsystem Overview - Samsung AlphaPC 164UX Technical Reference Manual

Table 1–1 AlphaPC 164UX SDRAM Memory Configurations
Total
Memory
672MB
704MB
768MB
800MB
832MB
896MB
1024MB
1056MB
1088MB
1152MB
1280MB
1536MB
Note : The following are important items to remember
- in order for the ECC memory feature to work, all DIMMs must be 72bit.
- To populate a bank,you must use 2 matched DIMMs.

1.1.3 L3 Bcache Subsystem Overview

The AlphaPC 164UX board-level L3 backup cache (Bcache) is a 2MB, direct-
mapped, synchronous SRAM with a 128-bit data path. The board is capable of han-
dling an L3 cache size of 4MB. See Section 2.3 for more information about the
Bcache.
Bank 0
U3 U4
256MB 256MB
256MB 256MB
256MB 256MB
256MB 256MB
128MB 128MB 128MB
256MB 256MB
256MB 256MB 128MB
256MB 256MB 128MB
256MB 256MB 128MB
256MB 256MB 128MB
256MB 256MB 128MB
256MB 256MB 256MB
256MB 256MB 256MB
256MB 256MB 256MB
256MB 256MB 256MB
256MB 256MB 256MB
256MB 256MB 256MB
Introduction to the AlphaPC 164UX Motherboard
System Components and Features
Bank 1
U5 U6
32MB 32MB 32MB
64MB 64MB
64MB 64MB 16MB
64MB 64MB 32MB
128MB 128MB
64MB 64MB 64MB
128MB
128MB 16MB
128MB 32MB
128MB 64MB
128MB 128MB
256MB
256MB 16MB
256MB 32MB
256MB 64MB
256MB 128MB
256MB 256MB
(Sheet 3 of 3)
Bank 2
U7 U8
32MB
16MB
32MB
128MB
64MB
16MB
32MB
64MB
128MB
16MB
32MB
64MB
128MB
256MB
1–5