R8A77800ANBGAV Renesas Electronics America, R8A77800ANBGAV Datasheet - Page 224

• Manufacturer Part Number: R8A77800ANBGAV
• Description: IC SUPERH MPU ROMLESS 449-BGA
• Manufacturer: Renesas Electronics America
• Series: SuperH® SH7780r

Specifications of R8A77800ANBGAV

• Core Processor: SH-4A
• Core Size: 32-Bit
• Speed: 400MHz
• Connectivity: Audio Codec, MMC, Serial Sound, SCI, SIO, SPI, SSI
• Peripherals: DMA, POR, WDT
• Number Of I /o: 75
• Program Memory Type: ROMless
• Ram Size: 16K x 8
• Voltage - Supply (vcc/vdd): 1.15 V ~ 1.35 V
• Oscillator Type: External
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 449-BGA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Program Memory Size: -
• Data Converters: -

Section 7 Memory Management Unit (MMU)
Figure 7.10 shows a flowchart of a memory access using the ITLB.
Rev.1.00 Dec. 13, 2005 Page 172 of 1286
REJ09B0158-0100
Internal resource access
VA is
in P4 area
Hardware ITLB
miss handling
Record in ITLB
Figure 7.10 Flowchart of Memory Access Using ITLB
VA is
in P2 area
Instruction TLB protection
0
Yes
Instruction access to virtual address (VA)
violation exception
Instruction TLB
miss exception
Search UTLB
CCR.ICE?
Match?
(Non-cacheable)
Memory access
No
1
VA is
in P1 area
No
0
No
multiple hit exception
and CCR.ICE = 1
Instruction TLB
Cache access
VPNs match
and V = 1
1
C = 1
PR?
Yes
Yes
0 (User)
VA is in P0, U0,
or P3 area
No
No
No
No
and (MMUCR.SV = 0 or
ASIDs match, and
MMUCR.AT = 1
entry matches
VPNs match,
SR.MD = 0)
SR.MD?
Only one
SH = 0
V = 1
Yes
1 (Privileged)
Yes
Yes
Yes