HD6417712BPV Renesas Electronics America, HD6417712BPV Datasheet - Page 266
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
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Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
HD6417712BPV
Manufacturer:
Renesas Electronics America
Quantity:
10 000
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Section 6 Cache
6.3
6.3.1
If the cache is enabled (the CE bit in CCR1 = 1), whenever instructions or data in spaces P0, P1,
P3, and U0 are accessed the cache will be searched to see if the desired instruction or data is in the
cache. Figure 6.2 illustrates the method by which the cache is searched. The cache is a physical
cache and holds physical addresses in its address section.
Entries are selected using bits 12 to 4 of the address (virtual) of the access to memory and the tag
address of that entry is read. The virtual address (bits 31 to 10) of the access to memory and the
physical address (tag address) read from the address array are compared. The address comparison
uses all four ways. When the comparison shows a match and the selected entry is valid (V = 1), a
cache hit occurs. When the comparison does not show a match or the selected entry is not valid (V
= 0), a cache miss occurs. Figure 6.2 shows a hit on way 1.
Rev. 1.00 Dec. 27, 2005 Page 222 of 932
REJ09B0269-0100
Operation
Searching the Cache
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