HD6417708SF60 Renesas Electronics America, HD6417708SF60 Datasheet - Page 77

• Manufacturer Part Number: HD6417708SF60
• Description: IC SUPERH MPU ROMLESS 144LQFP
• Manufacturer: Renesas Electronics America
• Series: SuperH® SH7700r

Specifications of HD6417708SF60

• Core Processor: SH-2
• Core Size: 32-Bit
• Speed: 60MHz
• Connectivity: EBI/EMI, SCI, SmartCard
• Peripherals: POR, WDT
• Number Of I /o: 8
• Program Memory Type: ROMless
• Voltage - Supply (vcc/vdd): 3 V ~ 3.6 V
• Oscillator Type: External
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 144-LQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Ram Size: -
• Program Memory Size: -
• Data Converters: -

Address Space Identifier (ASID): When multiple processes run in parallel sharing the same
virtual address space and the processes have unique address translation tables, the virtual space
can be multiplexed. The ASID is 8 bits in length and is held in PTEH within the MMU indicating
the current process. With ASID, the TLB need not be purged when the process is switched.
When multiple processes run in parallel using the virtual address space exclusively, the physical
address corresponding to a given virtual address is specified uniquely. For this kind of single
virtual memory, the ASID becomes a key to protect memory (see section 3.4.2).
3.1.4
A register that has an undefined initial value must be initialized by the software. Table 3.1 shows
the configuration of the MMU control registers.
Table 3.1
Name
Page table entry register
high
Page table entry register low
Translation table base
register
TLB exception address
register
MMU control register
Notes: 1. Initialized by a power-on reset or manual reset.
2. SV bit: undefined
Register Configuration
Other bits: 0
Register Configuration
Abbreviation
PTEH
PTEL
TTB
TEA
MMUCR
R/W
R/W
R/W
R/W
R/W
R/W
Size
Longword
Longword
Longword
Longword
Longword
Undefined
Undefined
Undefined
Undefined
*
Initial Value*
2
1
Address
H'FFFFFFF0
H'FFFFFFF4
H'FFFFFFF8
H'FFFFFFFC
H'FFFFFFE0
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