User manual

Glossary
Glossary-20 Copyright © 2001-2003 ARM Limited. All rights reserved. ARM DDI0198D
Cache terminology diagram
The diagram below illustrates the following cache terminology:
• block address
• cache line
• cache set
• cache way
• index
• tag.
Tag
Tag
Tag
Tag Index Word
Hit
(way number)
Read data
(way that corresponds)
=
3
1
Tag
0
0
2
1
3
4
5
6
7
n
Byte
Cache way
Cache set
m 1
2
0
Cache line
2
Block address
Line number
Word number
Cache tag RAM Cache data RAM