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ARM920T PROCESSOR PROGRAMMER'S MODEL
2-9
Bits [20:18] give the data cache size. Bits [8:6] give the instruction cache size.
Table 2-7 on page 2-9 shows the meaning of values used for cache size encoding.
Table 2-7. Cache Size Encoding
Bits [20:18]/Bits [8:6] Cache Size
000 512B
001 1KB
010 2KB
011 4KB
100 8KB
101 16KB
110 32KB
111 64KB
Bits [17:15] give the data cache associativity. Bits [5:3] give the instruction cache associativity. Table 2-8 on
page 2-9 shows the meaning of values used for cache associativity encoding.
Table 2-8. Cache associativity encoding
Bits [17:15]/Bits [5:3] Associativity
000 Direct mapped
001 2
010 4
011 8
100 16
101 32
110 64
111 128
Bits [13:12] give the data cache line length. Bits [1:0] give the instruction cache line length.