HD6417705F133BV Renesas Electronics America, HD6417705F133BV Datasheet - Page 125
HD6417705F133BV
Manufacturer Part Number
HD6417705F133BV
Description
MPU 3V 0K PB-FREE 208 FP
Manufacturer
Renesas Electronics America
Series
SuperH® SH7700r
Datasheet
1.HD6417705F133BV.pdf
(741 pages)
Specifications of HD6417705F133BV
Core Processor
SH-3
Core Size
32-Bit
Speed
133MHz
Connectivity
EBI/EMI, FIFO, IrDA, SCI, USB
Peripherals
DMA, POR, PWM, WDT
Number Of I /o
105
Program Memory Type
ROMless
Ram Size
32K x 8
Voltage - Supply (vcc/vdd)
1.4 V ~ 1.6 V
Data Converters
A/D 4x10b
Oscillator Type
Internal
Operating Temperature
-20°C ~ 75°C
Package / Case
208-LQFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Program Memory Size
-
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3.3.2
The TLB uses a 4-way set associative scheme, so entries must be selected by index. VPN bits 16
to 12 are used as the index number regardless of the page size. The index number can be generated
in two different ways depending on the setting of the IX bit in MMUCR.
1. When IX = 0, VPN bits 16 to 12 alone are used as the index number
2. When IX = 1, VPN bits 16 to 12 are EX-ORed with ASID bits 4 to 0 to generate a 5-bit index
The first method is used to prevent lowered TLB efficiency that results when multiple processes
run simultaneously in the same virtual address space (multiple virtual memory) and a specific
entry is selected by indexing of each process. In single virtual memory mode (MMUCR.SV = 1),
IX bit should be set to 0. Figures 3.8 and 3.9 show the indexing schemes.
number
TLB Indexing
31
0
Virtual address
31
VPN(31-17)
Index
VPN(11-10)
17
Address array
Figure 3.8 TLB Indexing (IX = 1)
16
12
11
ASID(7-0)
0
Exclusive-OR
V
Ways 0 to 3
PPN(28-10) PR(1-0) SZ C
PTEH register
31
VPN
Rev. 2.00, 09/03, page 77 of 690
Data array
ASID(4-0)
10
0
D SH
7
ASID
0
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