D6417729RHF200BV Renesas Electronics America, D6417729RHF200BV Datasheet - Page 149
D6417729RHF200BV
Manufacturer Part Number
D6417729RHF200BV
Description
IC SUPER H MPU ROMLESS 208QFP
Manufacturer
Renesas Electronics America
Series
SuperH® SH7700r
Datasheet
1.D6417729RF133BV.pdf
(857 pages)
Specifications of D6417729RHF200BV
Core Processor
SH-3 DSP
Core Size
32-Bit
Speed
200MHz
Connectivity
EBI/EMI, FIFO, IrDA, SCI, SmartCard
Peripherals
DMA, POR, WDT
Number Of I /o
96
Program Memory Type
ROMless
Ram Size
32K x 8
Voltage - Supply (vcc/vdd)
1.85 V ~ 2.15 V
Data Converters
A/D 8x10b; D/A 2x8b
Oscillator Type
Internal
Operating Temperature
-20°C ~ 75°C
Package / Case
208-QFP Exposed Pad, 208-eQFP, 208-HQFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Program Memory Size
-
Available stocks
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Part Number:
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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 and ASID bits 4 to 0 in PTEH are used as the index number. 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 16–12 alone are used as the index number
2. When IX = 1, VPN bits 16–12 are EX-ORed with ASID bits 4–0 to generate the index number
The second 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 generating an index number for each process. Figures 3.6 and 3.7
show the indexing schemes.
31
0
Virtual address
31
TLB Indexing
VPN(31−17)
Index
VPN(11−10)
17
Address array
16
Figure 3.6 TLB Indexing (IX = 1)
12
11
ASID(7−0)
0
Exclusive-OR
V
Ways 0 to 3
PPN(31−10) PR(1−0) SZ C
PTEH register
31
VPN
Rev. 5.0, 09/03, page 101 of 806
Data array
ASID(4−0)
10
0
D SH
7
ASID
0
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