HD6417706 RENESAS [Renesas Technology Corp], HD6417706 Datasheet - Page 152
HD6417706
Manufacturer Part Number
HD6417706
Description
Renesas 32-Bit RISC Microcomputer Super RISC engine Family/SH7700 Series
Manufacturer
RENESAS [Renesas Technology Corp]
Datasheet
1.HD6417706.pdf
(709 pages)
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
HD6417706
Manufacturer:
TDK
Quantity:
500
Part Number:
HD6417706-SH3-133V
Manufacturer:
RENESAS/瑞萨
Quantity:
20 000
Part Number:
HD6417706BP133
Manufacturer:
RENESAS/瑞萨
Quantity:
20 000
Part Number:
HD6417706BP133V
Manufacturer:
HITACHI/日立
Quantity:
20 000
Company:
Part Number:
HD6417706F120DV
Manufacturer:
HITACHI
Quantity:
96
Part Number:
HD6417706F120DV
Manufacturer:
RENESAS/瑞萨
Quantity:
20 000
Part Number:
HD6417706F133
Manufacturer:
RENESAS/瑞萨
Quantity:
20 000
Company:
Part Number:
HD6417706F133V
Manufacturer:
EDISON
Quantity:
2 000
Company:
Part Number:
HD6417706F133V
Manufacturer:
Renesas Electronics America
Quantity:
10 000
- Current page: 152 of 709
- Download datasheet (5Mb)
5.3.3
Prefetch Hit: LRU is updated so that the way that has been hit to be the latest. Other contents of
the cache are not updated. Instruction or data is not transferred to the CPU.
Prefetch Miss: Instruction or data is not transferred to the CPU. The way to be replaced is listed
in table 5.2. Other operations are same as those in read miss.
5.3.4
Write Hit: In a write access in the write-back mode, the data is written to the cache and the U bit
of the entry written is set to 1. Writing occurs only to the cache; no external memory write cycle is
issued. In the write-through mode, the data is written to the cache and an external memory write
cycle is issued.
Write Miss: In the write-back mode, an external write cycle starts when a write miss occurs, and
the entry is updated. The way to be replaced is shown in table 5.3. When the U bit of the entry to
be replaced is 1, the cache fill cycle starts after the entry is transferred to the write-back buffer.
The write-back unit is 16 bytes. Data is written to the cache and the U bit and V bit are set to 1.
After the cache completes its fill cycle, the write-back buffer writes back the entry to the memory.
In the write-through mode, no write to cache occurs in a write miss; the write is only to the
external memory.
5.3.5
When the U bit of the entry to be replaced in the write-back mode is 1, it must be written back to
the external memory. To increase performance, the entry to be replaced is first transferred to the
write-back buffer and fetching of new entries to the cache takes priority over writing back to the
external memory. After fetching of new entries to the cache is completed, the data in the write-
back buffer is write back to the external memory. During the write back cycles, the cache can be
accessed. The write-back buffer can hold one line of the cache data (16 bytes) and its physical
address. Figure 5.3 shows the configuration of the write-back buffer.
Rev. 4.00, 03/04, page 106 of 660
Prefetch Operation
Write Access
Write-Back Buffer
PA (31 to 4):
Longword 0 to 3:
PA (31 to 4)
Figure 5.3 Write-Back Buffer Configuration
Physical address written to external memory
The line of cache data to be written to
external memory
Longword 0
Longword 1
Longword 2
Longword 3
Related parts for HD6417706
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
Part Number:
Description:
Renesas Technology Corp [Renesas 32-Bit RISC Microcomputer Super RISC engine Family/SH7700 Series]
Manufacturer:
Renesas Electronics Corporation.
Datasheet:
Part Number:
Description:
Renesas 16-Bit Single-Chip Microcomputer Renesas H8S Family/H8S/2100 Series
Manufacturer:
RENESAS [Renesas Technology Corp]
Datasheet:
Part Number:
Description:
Renesas MCU
Manufacturer:
RENESAS [Renesas Technology Corp]
Datasheet:
Part Number:
Description:
RENESAS MCU
Manufacturer:
RENESAS [Renesas Technology Corp]
Datasheet:
Part Number:
Description:
RENESAS MCU
Manufacturer:
RENESAS [Renesas Technology Corp]
Datasheet:
Part Number:
Description:
RENESAS MCU
Manufacturer:
RENESAS [Renesas Technology Corp]
Datasheet:
Part Number:
Description:
Renesas 16-Bit Single-Chip Microcomputer H8S Family / H8S/2200 Series
Manufacturer:
RENESAS [Renesas Technology Corp]
Datasheet:
Part Number:
Description:
Renesas 16-Bit Single-Chip Microcomputer H8S Family H8S-2300 Series
Manufacturer:
RENESAS [Renesas Technology Corp]
Datasheet:
Part Number:
Description:
Renesas 16-Bit Single-Chip Microcomputer H8S Family/H8S/2300 Series
Manufacturer:
RENESAS [Renesas Technology Corp]
Datasheet:
Part Number:
Description:
Renesas 16-Bit Single-Chip Microcomputer H8S Family/H8S/2300 Series
Manufacturer:
RENESAS [Renesas Technology Corp]
Datasheet:
Part Number:
Description:
Quadruple Differential Line Drivers With 3 State Outputs
Manufacturer:
RENESAS [Renesas Technology Corp]
Datasheet:
Part Number:
Description:
Silicon N Channel Power MOS FET Power Switching
Manufacturer:
RENESAS [Renesas Technology Corp]
Datasheet:
Part Number:
Description:
600V - 20A - SJ MOS FET High Speed Power Switching
Manufacturer:
RENESAS [Renesas Technology Corp]
Datasheet:
Part Number:
Description:
IGBT DRIVER
Manufacturer:
RENESAS [Renesas Technology Corp]
Datasheet:
Part Number:
Description:
Quad 2-Input AND Gate
Manufacturer:
RENESAS [Renesas Technology Corp]
Datasheet: