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SH7713 bảng dữ liệu(PDF) 253 Page - Renesas Technology Corp

tên linh kiện SH7713
Giải thích chi tiết về linh kiện  Renesas 32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7700 Series
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nhà sản xuất  RENESAS [Renesas Technology Corp]
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SH7713 bảng dữ liệu(HTML) 253 Page - Renesas Technology Corp

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Section 5 Memory Management Unit (MMU)
Rev.1.50 Aug. 30, 2006 Page 213 of 860
REJ09B0288-0150
5.6.3
Usage Examples
Invalidating Specific Entries: Specific TLB entries can be invalidated by writing 0 to the entry’s
V bit. R0 specifies the write data and R1 specifies the address.
; R0=H'1547 381C
R1=H'F201 3000
; MMUCR.IX=0
; the V bit of way 0 of the entry selected by the VPN(16–12)=B'1 0011
; index is cleared to0,achieving invalidation.
MOV.L
R0,@R1
Reading the Data of a Specific Entry: This example reads the data section of a specific TLB
entry. The bit order indicated in the data field in figure 5.14 (2) is read. R0 specifies the address
and the data section of a selected entry is read to R1.
; R0
=H'F300 4300
VPN(16-12)=B'00100
Way 3
; MOV.L @R0,R1
5.7
Usage Note
The following operations should be performed in the P1 or P2 areas. In addition, when the P0, P3,
or U0 areas are accessed consecutively (this access includes instruction fetching), the instruction
code should be placed at least two instructions after the instruction that executes the following
operations.
1. Modification of SR.MD or SR.BL
2. Execution of the LDTLB instruction
3. Write to the memory-mapped TLB
4. Modification of MMUCR
5. Modification of PTEH.ASID



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