HD6417712BPV Renesas Electronics America, HD6417712BPV Datasheet - Page 249
HD6417712BPV
Manufacturer Part Number
HD6417712BPV
Description
MPU 1.5/3.3V 0K PB-FREE 256-BGA
Manufacturer
Renesas Electronics America
Series
SuperH® SH Ethernetr
Datasheet
1.HD6417712BPV.pdf
(980 pages)
Specifications of HD6417712BPV
Core Processor
SH-3 DSP
Core Size
32-Bit
Speed
200MHz
Connectivity
EBI/EMI, Ethernet, FIFO, SCI, SIO
Peripherals
DMA, POR, WDT
Number Of I /o
24
Program Memory Type
ROMless
Ram Size
16K x 8
Voltage - Supply (vcc/vdd)
1.4 V ~ 1.6 V
Oscillator Type
External
Operating Temperature
-20°C ~ 75°C
Package / Case
256-BGA
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Program Memory Size
-
Data Converters
-
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
HD6417712BPV
Manufacturer:
Renesas Electronics America
Quantity:
10 000
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5.5
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
protection violation, TLB invalid, and initial page write, and these MMU exceptions are checked
in this order.
5.5.1
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: In a TLB miss, this hardware executes a set of prescribed operations, as
follows:
1. The VPN field of the virtual address causing the exception is written to the PTEH register.
2. The virtual address causing the exception is written to the TEA register.
3. Either exception code H'040 for a load access, or H'060 for a store access, is written to the
4. The PC value indicating the address of the instruction in which the exception occurred is
5. The contents of the status register (SR) at the time of the exception are written to the save
6. The MD bit in SR is set to 1 to place the privileged mode.
7. The BL bit in SR is set to 1 to mask any further exception requests.
8. The RB bit in SR is set to 1.
9. The RC field in the MMU control register (MMUCR) is incremented by 1 when all entries
10. Execution branches to the address obtained by adding the value of the VBR contents and
Software (TLB Miss Handler) Operations: The software searches the page tables in external
memory and allocates the required page table entry. Upon retrieving the required page table entry,
software must execute the following operations:
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.
H'00000400 to invoke the user-written TLB miss exception handler.
MMU Exceptions
TLB Miss Exception
Section 5 Memory Management Unit (MMU)
Rev. 1.00 Dec. 27, 2005 Page 205 of 932
REJ09B0269-0100
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