Renesas SH7781 - Manual (Page 137)

5. Exception Handling
Rev.1.00 Jan. 10, 2008 Page 107 of 1658
REJ09B0261-0100
(4) Data TLB Protection Violation Exception
• Source: The access does not accord with the UTLB protection information (PR bits or EPR
bits) shown in table 5.4 and table 5.5.
Table 5.4 UTLB Protection Information (TLB Compatible Mode)
PR Privileged Mode User Mode
00 Only read access possible Access not possible
01 Read/write access possible Access not possible
10 Only read access possible Only read access possible
11 Read/write access possible Read/write access possible
Table 5.5 UTLB Protection Information (TLB Extended Mode)
EPR [5] Read Permission in Privileged Mode
0 Read access possible
1 Read access not possible
EPR [4] Write Permission in Privileged Mode
0 Write access possible
1 Write access not possible
EPR [2] Read Permission in User Mode
0 Read access possible
1 Read access not possible
EPR [1] Write Permission in User Mode
0 Write access possible
1 Write access not possible
• Transition address: VBR + H'00000100
• Transition operations:
The virtual address (32 bits) at which this exception occurred is set in TEA, and the
corresponding virtual page number (22 bits) is set in PTEH [31:10]. ASID in PTEH indicates
the ASID when this exception occurred.