HD6417727F100C Renesas Electronics America, HD6417727F100C Datasheet - Page 164

• Manufacturer Part Number: HD6417727F100C
• Description: IC SUPERH MPU ROMLESS 240QFP
• Manufacturer: Renesas Electronics America
• Series: SuperH® SH7700r

Specifications of HD6417727F100C

• Core Processor: SH-3 DSP
• Core Size: 32-Bit
• Speed: 100MHz
• Connectivity: FIFO, SCI, SIO, SmartCard, USB
• Peripherals: DMA, LCD, POR, WDT
• Number Of I /o: 104
• Program Memory Type: ROMless
• Ram Size: 32K x 8
• Voltage - Supply (vcc/vdd): 1.6 V ~ 2.05 V
• Data Converters: A/D 6x10b; D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 240-QFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Program Memory Size: -

Section 3 Memory Management Unit (MMU)
Rev.6.00 Mar. 27, 2009 Page 106 of 1036
REJ09B0254-0600
Legend:
VPN (31−17) VPN (11−10) ASID SH SZ V
ASID: Address space identifier. Indicates the process that can access a virtual page. In single
VPN: Virtual page number. Top 22 bits of virtual address for a 1-kbyte page, or top 20 bits of
PPN: Physical page number. Top 22 bits of physical address. PPN bits 11 and 10 are not used in
SH: Share status bit
PR: Set the most significant bit to 0.
SZ: Page-size bit
(15)
C: Cacheable bit. Indicates whether the page is cacheable.
D: Dirty bit. Indicates whether the page has been written to.
V: Valid bit. Indicates whether entry is valid.
virtual address for a 4-kbyte page. Since VPN bits 16 to 12 are used as the index number,
they are not stored in the TLB entry.
virtual memory mode and user mode, or in multiple virtual memory mode, if the SH bit is 0,
the address is compared with the ASID in PTEH when address comparison is performed.
0 = Page not shared between processes
1 = Page shared between processes
0 = 1-kbyte page
1 = 4-kbyte page
0 = Invalid
1 = Valid
Cleared to 0 by a power-on reset. Not affected by a manual reset.
case of a 4-kbyte page. Attention must be paid to the synonym problem in case of a 1-kbyte
page (see section 3.4.4, Avoiding Synonym Problems).
Protection key field. 2-bit field encoded to define the access rights to the page.
00: Reading only is possible in privileged mode.
01: Reading/writing is possible in privileged mode.
10: Reading only is possible in privileged/user mode.
11: Reading/writing is possible in privileged/user mode.
0 = Non-cacheable
1 = Cacheable
0 = Not written to
1 = Written to
31
31
Figure 3.5 Logical Address and TLB Structure
(2)
Virtual address (1-kbyte page)
Virtual address (4-kbyte page)
VPN
(8)
VPN
(1)
TLB entry
(1)
(1)
12
10
11
9
Offset
PPN
(22)
Offset
0
0
PR
(2)
(1) (1)
C D