HD6417720BP133BV Renesas Electronics America, HD6417720BP133BV Datasheet - Page 247
HD6417720BP133BV
Manufacturer Part Number
HD6417720BP133BV
Description
SH3-DSP, WITH USB AND LCDC, PB-F
Manufacturer
Renesas Electronics America
Series
SuperH® SH7700r
Datasheet
1.R8A77210C133BAV.pdf
(1478 pages)
Specifications of HD6417720BP133BV
Core Processor
SH-3 DSP
Core Size
32-Bit
Speed
133MHz
Connectivity
FIFO, I²C, IrDA, MMC, SCI, SD, SIO, SIM, USB
Peripherals
DMA, LCD, POR, WDT
Number Of I /o
117
Program Memory Type
ROMless
Ram Size
16K x 8
Voltage - Supply (vcc/vdd)
1.4 V ~ 1.6 V
Data Converters
A/D 4x10b; D/A 2x8b
Oscillator Type
Internal
Operating Temperature
-20°C ~ 75°C
Package / Case
256-BGA
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Program Memory Size
-
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SH7720 Group, SH7721 Group
4.5
When the address translation unit of the MMU is enabled, occurrence of the MMU exception is
checked following the CPU address error check. There are four MMU exceptions: TLB miss, TLB
invalid, TLB protection violation, and initial page write, and these MMU exceptions are checked
in this order.
4.5.1
A TLB miss results when the virtual address and the address array of the selected TLB entry are
compared and no match is found. TLB miss exception processing includes both hardware and
software operations.
• Hardware Operations
R01UH0083EJ0400 Rev. 4.00
Sep 21, 2010
In a TLB miss, this hardware executes a set of prescribed operations, as follows:
A. The VPN field of the virtual address causing the exception is written to the PTEH register.
B. The virtual address causing the exception is written to the TEA register.
C. Either exception code H'040 for a load access, or H'060 for a store access, is written to the
D. The PC value indicating the address of the instruction in which the exception occurred is
E The contents of the status register (SR) at the time of the exception are written to the save
F. The mode (MD) bit in SR is set to 1 to place the privileged mode.
G. The block (BL) bit in SR is set to 1 to mask any further exception requests.
H. The register bank (RB) bit in SR is set to 1.
I. The RC field in the MMU control register (MMUCR) is incremented by 1 when all entries
J. Execution branches to the address obtained by adding the value of the VBR contents and
EXPEVT register.
written to the save program counter (SPC). If the exception occurred in a delay slot, the PC
value indicating the address of the related delayed branch instruction is written to the SPC.
status register (SSR).
indexed are valid. When some entries indexed are invalid, the smallest way number of
them is set in RC. The setting priority is way0, way1, way2, and way3.
H'0000 0400 to invoke the user-written TLB miss exception handler.
MMU Exceptions
TLB Miss Exception
Section 4 Memory Management Unit (MMU)
Page 187 of 1414
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