D17760BP200AD Renesas Electronics America, D17760BP200AD Datasheet - Page 224
D17760BP200AD
Manufacturer Part Number
D17760BP200AD
Description
IC SUPERH MPU ROMLESS 256-BGA
Manufacturer
Renesas Electronics America
Series
SuperH® SH7750r
Datasheet
1.D6417760BP200ADV.pdf
(1418 pages)
Specifications of D17760BP200AD
Core Processor
SH-4
Core Size
32-Bit
Speed
200MHz
Connectivity
Audio Codec, CAN, EBI/EMI, FIFO, I²C, MFI, MMC, SCI, Serial Sound, SIM, SPI, USB
Peripherals
DMA, LCD, POR, WDT
Number Of I /o
69
Program Memory Type
ROMless
Ram Size
48K x 8
Voltage - Supply (vcc/vdd)
1.4 V ~ 1.6 V
Data Converters
A/D 4x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
256-BGA
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Eeprom Size
-
Program Memory Size
-
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6.5.5
A data TLB miss exception occurs when address translation information for the virtual address to
which a data access is made is not found in the UTLB entries. The data TLB miss exception
processing carried out by hardware and software is shown below.
Hardware Processing: In the event of a data TLB miss exception, hardware carries out the
following processing:
1. Sets the VPN of the virtual address at which the exception occurred in PTEH.
2. Sets the virtual address at which the exception occurred in TEA.
3. Sets exception code H'040 in the case of a read, or H'060 in the case of a write in EXPEVT
4. Sets the PC value indicating the address of the instruction at which the exception occurred in
5. Sets the SR contents at the time of the exception in SSR. The R15 contents at this time are
6. Sets the MD bit in SR to 1, and switches to privileged mode.
7. Sets the BL bit in SR to 1, and masks subsequent exception requests.
8. Sets the RB bit in SR to 1.
9. Branches to the address obtained by adding offset H'0000 0400 to the contents of VBR, and
Software Processing (Data TLB Miss Exception Handling Routine): Software is responsible
for searching the external memory page table and assigning the necessary page table entry.
Software should carry out the following processing in order to find and assign the necessary page
table entry.
1. Write to PTEL the values of the PPN, PR, SZ, C, D, SH, V, and WT bits in the page table
2. When the entry to be replaced in entry replacement is specified by software, write that value to
3. Execute the LDTLB instruction and write the contents of PTEH, PTEL, and PTEA to the
4. Finally, execute the exception handling return instruction (RTE), terminate the exception
Rev. 2.00 Feb. 12, 2010 Page 140 of 1330
REJ09B0554-0200
(OCBP, OCBWB: read; OCBI, MOVCA.L: write).
SPC. If the exception occurred at a delay slot, sets the PC value indicating the address of the
delayed branch instruction in SPC.
saved in SGR.
starts the data TLB miss exception handling routine.
entry recorded in the external memory address translation table. If necessary, the values of the
SA and TC bits should be written to PTEA.
the URC bits in MMUCR. If URC is greater than URB at this time, the value should be
changed to an appropriate value after issuing an LDTLB instruction.
UTLB.
handling routine, and return control to the normal flow. The RTE instruction should be issued
at least one instruction after the LDTLB instruction.
Data TLB Miss Exception
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