r5s77631ay266bgv Renesas Electronics Corporation., r5s77631ay266bgv Datasheet - Page 226

• Manufacturer Part Number: r5s77631ay266bgv
• Description: Renesas 32-bit Risc Microcomputer Superhtm Risc Engine Family Sh-4a Series
• Manufacturer: Renesas Electronics Corporation.

Section 6 Memory Management Unit (MMU)
6.3.3
Figure 6.9 shows a flowchart of a memory access using the UTLB.
Rev. 1.00 Oct. 01, 2007 Page 160 of 1956
REJ09B0256-0100
Internal resource access
Address Translation Method
VA is
in P4 area
Data TLB protection
violation exception
Data TLB multiple
Data TLB miss
hit exception
exception
00 or
01
Figure 6.9 Flowchart of Memory Access Using UTLB
VA is
in P2 area
W
0
1
R/W?
PR?
10
R
CCR.OCE?
CCR.CB?
(Non-cacheable)
Memory access
1
Data access to virtual address (VA)
VA is
in P1 area
0
0 (User)
R/W?
11
R
Initial page write
W
No
exception
0
0
D?
0
VPNs match
in copy-back mode
CCR.OCE?
W
and V = 1
CCR.WT?
Cache access
1
1
Yes
1
R/W?
R
01 or 11
Data TLB protection
violation exception
VA is in P0, U0,
or P3 area
No
No
No
No
0
No
PR?
and (MMUCR.SV = 0 or
in write-through mode
ASIDs match, and
MMUCR.AT = 1
entry matches
Cache access
CCR.OCE = 1
VPNs match,
SR.MD = 0)
C = 1 and
Only one
SR.MD?
SH = 0
V = 1
WT?
W
Yes
Yes
Yes
1 (Privileged)
Yes
1
Yes
R/W?
R
00 or 10