SH7785 datasheet(137/1692 Pages) RENESAS

137 / 1692 page

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)

Privileged Mode

User Mode

Only read access possible

Access not possible

Read/write access possible

Access not possible

Only read access possible

Read/write access possible

Table 5.5

UTLB Protection Information (TLB Extended Mode)

EPR [5]

Read Permission in Privileged Mode

Read access possible

Read access not possible

EPR [4]

Write Permission in Privileged Mode

Write access possible

Write access not possible

EPR [2]

Read Permission in User Mode

Read access possible

Read access not possible

EPR [1]

Write Permission in User Mode

Write access possible

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.

SH7785 Datasheet(PDF) 137 Page - Renesas Technology Corp