SH7670 Datasheet, PDF (130/1292 Pages) Renesas Technology Corp – 32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7670 Series

Section 4 Cache
1. Instruction cache
1.1 Address array access
(a) Address specification
Read access
31
23 22
13 12 11 10
43210
111100000 *----------* W
Entry address 0 * 0 0
Write access
31
23 22
13 12 11 10
43210
111100000 *----------* W
Entry address A * 0 0
(b) Data specification (both read and write accesses)
31 29 28
11 10 9
43210
0 0 0 Tag address (28 to 11) E
LRU
XXXV
2. Operand cache
2.1 Address array access
(a) Address specification
Read access
31
23 22
13 12 11 10
43210
111100001 *----------* W Entry address 0 * 0 0
Write access
31
23 22
13 12 11 10
43210
111100001 *----------* W Entry address A * 0 0
(b) Data specification (both read and write accesses)
31 29 28
11 10 9
43210
0 0 0 Tag address (28 to 11) E
LRU
X X UV
1.2 Data array access (both read and write accesses)
(a) Address specification
31
23 22
13 12 11 10
43210
111100010 *----------* W
Entry address
L 00
(b) Data specification
31
0
Longword data
2.2 Data array access (both read and write accesses)
(a) Address specification
31
23 22
13 12 11 10
43210
111100011 *----------* W Entry address
L 00
(b) Data specification
31
0
Longword data
[Legend]
*: Don't care
E: Bit 10 of entry address for read, don't care for write
X: 0 for read, don't care for write
Figure 4.4 Specifying Address and Data for Memory-Mapped Cache Access
Rev. 1.00 Nov. 14, 2007 Page 104 of 1262
REJ09B0437-0100