r8a77850anbg Renesas Electronics Corporation., r8a77850anbg Datasheet - Page 210

• Manufacturer Part Number: r8a77850anbg
• Description: Renesas 32-bit Risc Microcomputer Superh? Risc Engine Family
• Manufacturer: Renesas Electronics Corporation.

7. Memory Management Unit (MMU)
7.5.4
In an instruction access, this LSI searches the ITLB. If it cannot find the necessary address
translation information (ITLB miss occurred), the UTLB is searched by hardware, and if the
necessary address translation information is present, it is recorded in the ITLB. This procedure is
known as hardware ITLB miss handling. If the necessary address translation information is not
found in the UTLB search, an instruction TLB miss exception is generated and processing passes
to software.
Rev.1.00 Jan. 10, 2008 Page 180 of 1658
REJ09B0261-0100
Entry specification
PTEH
VPN
Hardware ITLB Miss Handling
Entry 0
Entry 1
Entry 2
Entry 63
Figure 7.17 Operation of LDTLB Instruction (TLB Extended Mode)
−
MMUCR
ASID[7:0]
ASID[7:0]
ASID[7:0]
ASID[7:0]
LRUI
ASID
VPN[31:10]
VPN[31:10]
VPN[31:10]
VPN[31:10]
−
PTEL
URB
−
V
V
V
V
−
PPN
Write
URC
PPN[28:10]
PPN[28:10]
PPN[28:10]
PPN[28:10]
−
SQMD
V
−
SV ME
C
D SH WT
ESZ[3:0]
ESZ[3:0]
ESZ[3:0]
ESZ[3:0] SH C EPR[5:0]
−
PTEA
SH
SH
SH
TI
−
−
C
C
C
AT
EPR[5:0]
EPR[5:0]
EPR[5:0]
EPR
D
D
D
D WT
WT
WT
WT
ESZ
−